{"id":1402,"date":"2023-04-20T16:03:49","date_gmt":"2023-04-20T07:03:49","guid":{"rendered":"http:\/\/edu.ujhb.org\/?p=1402"},"modified":"2023-04-20T16:03:50","modified_gmt":"2023-04-20T07:03:50","slug":"postgresql%e5%85%a5%e9%97%a8%ef%bc%88%e4%b8%ad%e6%96%87%e7%89%88%ef%bc%89","status":"publish","type":"post","link":"https:\/\/edu.ujhb.org\/?p=1402","title":{"rendered":"PostgreSQL\u5165\u95e8\uff08\u4e2d\u6587\u7248\uff09"},"content":{"rendered":"\n<p>\u6211\u662f\u8981\u505aIT\u6559\u7a0b\u7684\u89c6\u9891\uff0c\u4f60\u80fd\u5426\u6839\u636e\u7f51\u7ad9\u7684\u5185\u5bb9\uff0c\u4e3a\u6211\u5b89\u6392\u89c6\u9891\u6559\u7a0b\u7684\u6587\u5b57\u5185\u5bb9\u3002\u6211\u4eec\u5148\u4ecePostgres\u6559\u7a0b\u5f00\u59cb\uff0c\u4f60\u5148\u4e3a\u6211\u5217\u51fa\u8981\u8bb2\u89e3\u7684\u5185\u5bb9\u4e00\u89c8\u3002<\/p>\n\n\n\n<p>\u5f53\u7136\u53ef\u4ee5\uff01\u6839\u636ePostgreSQL\uff08\u7b80\u79f0Postgres\uff09\u7684\u76f8\u5173\u77e5\u8bc6\u548c\u6559\u7a0b\uff0c\u6211\u4e3a\u4f60\u89c4\u5212\u4e86\u4ee5\u4e0b\u89c6\u9891\u6559\u7a0b\u7684\u5927\u7eb2\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bfe\u7a0b\u4ecb\u7ecd\n<ul class=\"wp-block-list\">\n<li>PostgreSQL\u7b80\u4ecb<\/li>\n\n\n\n<li>\u4e3a\u4ec0\u4e48\u9009\u62e9PostgreSQL<\/li>\n\n\n\n<li>\u8bfe\u7a0b\u5185\u5bb9\u9884\u89c8<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>PostgreSQL\u5b89\u88c5\u4e0e\u914d\u7f6e\n<ul class=\"wp-block-list\">\n<li>\u4e0b\u8f7d\u4e0e\u5b89\u88c5PostgreSQL<\/li>\n\n\n\n<li>\u914d\u7f6e\u73af\u5883\u53d8\u91cf<\/li>\n\n\n\n<li>\u5b89\u88c5\u56fe\u5f62\u5316\u7ba1\u7406\u5de5\u5177pgAdmin<\/li>\n\n\n\n<li>\u521b\u5efa\u4e0e\u7ba1\u7406\u6570\u636e\u5e93\u7528\u6237<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6570\u636e\u5e93\u57fa\u7840\n<ul class=\"wp-block-list\">\n<li>\u6570\u636e\u5e93\u3001\u6570\u636e\u8868\u3001\u5217\u548c\u884c\u7684\u6982\u5ff5<\/li>\n\n\n\n<li>\u5e38\u7528\u6570\u636e\u7c7b\u578b<\/li>\n\n\n\n<li>SQL\u8bed\u8a00\u7b80\u4ecb<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6570\u636e\u8868\u64cd\u4f5c\n<ul class=\"wp-block-list\">\n<li>\u521b\u5efa\u6570\u636e\u8868<\/li>\n\n\n\n<li>\u4fee\u6539\u6570\u636e\u8868\u7ed3\u6784<\/li>\n\n\n\n<li>\u5220\u9664\u6570\u636e\u8868<\/li>\n\n\n\n<li>\u91cd\u547d\u540d\u6570\u636e\u8868<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6570\u636e\u8bb0\u5f55\u64cd\u4f5c\n<ul class=\"wp-block-list\">\n<li>\u63d2\u5165\u6570\u636e\uff08INSERT\uff09<\/li>\n\n\n\n<li>\u67e5\u8be2\u6570\u636e\uff08SELECT\uff09<\/li>\n\n\n\n<li>\u66f4\u65b0\u6570\u636e\uff08UPDATE\uff09<\/li>\n\n\n\n<li>\u5220\u9664\u6570\u636e\uff08DELETE\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u67e5\u8be2\u6761\u4ef6\u4e0e\u6392\u5e8f\n<ul class=\"wp-block-list\">\n<li>WHERE\u5b50\u53e5<\/li>\n\n\n\n<li>AND\u548cOR\u64cd\u4f5c\u7b26<\/li>\n\n\n\n<li>IN\u548cBETWEEN\u64cd\u4f5c\u7b26<\/li>\n\n\n\n<li>LIKE\u548cILIKE\u64cd\u4f5c\u7b26<\/li>\n\n\n\n<li>ORDER BY\u5b50\u53e5<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u805a\u5408\u51fd\u6570\u4e0e\u5206\u7ec4\n<ul class=\"wp-block-list\">\n<li>\u805a\u5408\u51fd\u6570\uff08COUNT\u3001SUM\u3001AVG\u3001MIN\u3001MAX\uff09<\/li>\n\n\n\n<li>GROUP BY\u5b50\u53e5<\/li>\n\n\n\n<li>HAVING\u5b50\u53e5<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8fde\u63a5\u67e5\u8be2\n<ul class=\"wp-block-list\">\n<li>\u5185\u8fde\u63a5\uff08INNER JOIN\uff09<\/li>\n\n\n\n<li>\u5de6\u8fde\u63a5\uff08LEFT JOIN\uff09<\/li>\n\n\n\n<li>\u53f3\u8fde\u63a5\uff08RIGHT JOIN\uff09<\/li>\n\n\n\n<li>\u5168\u8fde\u63a5\uff08FULL JOIN\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5b50\u67e5\u8be2\n<ul class=\"wp-block-list\">\n<li>\u5185\u5d4c\u5b50\u67e5\u8be2<\/li>\n\n\n\n<li>\u76f8\u5173\u5b50\u67e5\u8be2<\/li>\n\n\n\n<li>EXISTS\u4e0eNOT EXISTS<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6570\u636e\u5e93\u89c6\u56fe\n<ul class=\"wp-block-list\">\n<li>\u521b\u5efa\u89c6\u56fe<\/li>\n\n\n\n<li>\u4fee\u6539\u89c6\u56fe<\/li>\n\n\n\n<li>\u5220\u9664\u89c6\u56fe<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7d22\u5f15\u4e0e\u7ea6\u675f\n<ul class=\"wp-block-list\">\n<li>\u7d22\u5f15\u7684\u6982\u5ff5\u4e0e\u7c7b\u578b<\/li>\n\n\n\n<li>\u521b\u5efa\u3001\u4fee\u6539\u4e0e\u5220\u9664\u7d22\u5f15<\/li>\n\n\n\n<li>\u4e3b\u952e\u3001\u5916\u952e\u4e0e\u552f\u4e00\u7ea6\u675f<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4e8b\u52a1\u5904\u7406\u4e0e\u9501\u5b9a\n<ul class=\"wp-block-list\">\n<li>\u4e8b\u52a1\u7684\u6982\u5ff5\u4e0e\u5c5e\u6027<\/li>\n\n\n\n<li>\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b<\/li>\n\n\n\n<li>\u4e8b\u52a1\u63a7\u5236\u8bed\u53e5\uff08BEGIN\u3001COMMIT\u3001ROLLBACK\uff09<\/li>\n\n\n\n<li>\u9501\u5b9a\u673a\u5236\u4e0e\u9501\u7c7b\u578b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u51fd\u6570\u4e0e\u5b58\u50a8\u8fc7\u7a0b\n<ul class=\"wp-block-list\">\n<li>\u51fd\u6570\u7684\u6982\u5ff5\u4e0e\u521b\u5efa<\/li>\n\n\n\n<li>\u5b58\u50a8\u8fc7\u7a0b\u7684\u6982\u5ff5\u4e0e\u521b\u5efa<\/li>\n\n\n\n<li>\u89e6\u53d1\u5668\u7684\u6982\u5ff5\u4e0e\u521b\u5efa<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6570\u636e\u5e93\u5907\u4efd\u4e0e\u6062\u590d\n<ul class=\"wp-block-list\">\n<li>\u5907\u4efd\u65b9\u6cd5\u4e0e\u7b56\u7565<\/li>\n\n\n\n<li>\u6570\u636e\u5e93\u5bfc\u51fa\u4e0e\u5bfc\u5165\uff08pg_dump\u3001pg_restore\uff09<\/li>\n\n\n\n<li>\u6570\u636e\u5e93\u6062\u590d<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8bfe\u7a0b\u603b\u7ed3\n<ul class=\"wp-block-list\">\n<li>\u91cd\u70b9\u5185\u5bb9\u56de\u987e<\/li>\n\n\n\n<li>\u5ef6\u4f38\u5b66\u4e60\u8d44\u6e90\u63a8\u8350<\/li>\n\n\n\n<li>\u7ed3\u675f\u8bed<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u8fd9\u4e2a\u5927\u7eb2\u4ec5\u4f5c\u4e3a\u4e00\u4e2a\u57fa\u672c\u7684\u53c2\u8003\uff0c\u4f60\u53ef\u4ee5\u6839\u636e\u9700\u8981\u81ea\u884c\u8c03\u6574\u3002\u5e0c\u671b\u8fd9\u4e2a\u5927\u7eb2\u80fd\u5e2e\u52a9\u4f60\u5236\u4f5c\u51fa\u9ad8\u8d28\u91cf\u7684PostgreSQL\u89c6\u9891\u6559\u7a0b\uff01<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91caPostgreSQL\u7b80\u4ecb<\/p>\n\n\n\n<p>The previous model used in this conversation is unavailable. We&#8217;ve switched you to the latest default model<\/p>\n\n\n\n<p>PostgreSQL\u662f\u4e00\u6b3e\u5f00\u6e90\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u4e5f\u88ab\u7b80\u79f0\u4e3aPostgres\u3002\u5b83\u8d77\u6e90\u4e8e\u52a0\u5dde\u5927\u5b66\u4f2f\u514b\u5229\u5206\u6821\uff0c\u662f\u4e00\u79cd\u7a33\u5b9a\u3001\u53ef\u9760\u3001\u9ad8\u6548\u3001\u7075\u6d3b\u4e14\u529f\u80fd\u4e30\u5bcc\u7684\u6570\u636e\u5e93\u7cfb\u7edf\u3002<\/p>\n\n\n\n<p>PostgreSQL\u5177\u6709\u4f17\u591a\u7279\u6027\uff0c\u5305\u62ec\u9ad8\u53ef\u9760\u6027\u3001\u9ad8\u53ef\u6269\u5c55\u6027\u3001\u652f\u6301\u5927\u89c4\u6a21\u6570\u636e\u96c6\u3001\u5177\u5907\u4e8b\u52a1\u652f\u6301\u3001\u63d0\u4f9bACID\u517c\u5bb9\u6027\u3001\u652f\u6301\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\uff08MVCC\uff09\u3001\u652f\u6301JSON\u548cXML\u6570\u636e\u7c7b\u578b\u3001\u5177\u6709\u5148\u8fdb\u7684\u590d\u6742\u67e5\u8be2\u652f\u6301\u7b49\u7b49\u3002<\/p>\n\n\n\n<p>PostgreSQL\u662f\u4e00\u79cd\u975e\u5e38\u7075\u6d3b\u7684\u6570\u636e\u5e93\uff0c\u53ef\u4ee5\u9002\u7528\u4e8e\u5404\u79cd\u89c4\u6a21\u7684\u5e94\u7528\u573a\u666f\uff0c\u4ece\u5c0f\u578b\u5355\u7528\u6237\u5e94\u7528\u7a0b\u5e8f\u5230\u5927\u578b\u4f01\u4e1a\u7ea7\u5e94\u7528\u7a0b\u5e8f\uff0c\u751a\u81f3\u662f\u5927\u578b\u4e92\u8054\u7f51\u516c\u53f8\u548c\u6570\u636e\u4e2d\u5fc3\u7b49\u3002PostgreSQL\u8fd8\u63d0\u4f9b\u4e86\u4f17\u591a\u7b2c\u4e09\u65b9\u5de5\u5177\u548c\u5e93\uff0c\u4f7f\u5f97\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u5feb\u901f\u6784\u5efa\u5404\u79cd\u7c7b\u578b\u7684\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u5176\u5f00\u6e90\u3001\u514d\u8d39\u7684\u6027\u8d28\uff0cPostgreSQL\u5728\u5168\u7403\u62e5\u6709\u5e7f\u6cdb\u7684\u7528\u6237\u7fa4\u4f53\uff0c\u5e76\u4e14\u5f97\u5230\u4e86\u4f17\u591a\u5f00\u53d1\u4eba\u5458\u3001\u793e\u533a\u7ec4\u7ec7\u548c\u4f01\u4e1a\u7684\u652f\u6301\u3002\u56e0\u6b64\uff0cPostgreSQL\u5728\u5f00\u6e90\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d\u4e00\u76f4\u5904\u4e8e\u9886\u5148\u5730\u4f4d\u3002<\/p>\n\n\n\n<p>\u603b\u4e4b\uff0cPostgreSQL\u662f\u4e00\u79cd\u529f\u80fd\u4e30\u5bcc\u3001\u9ad8\u5ea6\u53ef\u6269\u5c55\u4e14\u9ad8\u5ea6\u53ef\u9760\u7684\u6570\u636e\u5e93\u7cfb\u7edf\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u89c4\u6a21\u7684\u5e94\u7528\u573a\u666f\uff0c\u5e76\u4e14\u5728\u5f00\u6e90\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d\u5177\u6709\u9886\u5148\u5730\u4f4d\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>1 \/ 2<\/p>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u4e3a\u4ec0\u4e48\u9009\u62e9PostgreSQL<\/p>\n\n\n\n<p>\u9009\u62e9PostgreSQL\u4f5c\u4e3a\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u7684\u539f\u56e0\u6709\u5f88\u591a\uff0c\u4ee5\u4e0b\u662f\u5176\u4e2d\u4e00\u4e9b\u4e3b\u8981\u7684\u539f\u56e0\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5f00\u6e90\u6027\uff1aPostgreSQL\u662f\u4e00\u6b3e\u5b8c\u5168\u5f00\u6e90\u7684\u6570\u636e\u5e93\u7cfb\u7edf\uff0c\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u81ea\u7531\u5730\u8bbf\u95ee\u3001\u4f7f\u7528\u3001\u4fee\u6539\u3001\u5206\u53d1\u548c\u8d21\u732e\u4ee3\u7801\uff0c\u56e0\u6b64\u5b83\u53ef\u4ee5\u66f4\u597d\u5730\u6ee1\u8db3\u7528\u6237\u7684\u9700\u6c42\uff0c\u4e14\u4e0d\u4f1a\u56e0\u4e3a\u8bb8\u53ef\u8bc1\u9650\u5236\u800c\u51fa\u73b0\u6210\u672c\u95ee\u9898\u3002<\/li>\n\n\n\n<li>\u53ef\u9760\u6027\uff1aPostgreSQL\u662f\u4e00\u6b3e\u975e\u5e38\u53ef\u9760\u7684\u6570\u636e\u5e93\u7cfb\u7edf\uff0c\u5b83\u5177\u6709\u9ad8\u5ea6\u7a33\u5b9a\u6027\u548c\u5065\u58ee\u6027\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002PostgreSQL\u8fd8\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5f3a\u5927\u7684\u529f\u80fd\uff0c\u5982\u4e8b\u52a1\u652f\u6301\u548c\u9ad8\u7ea7\u9519\u8bef\u68c0\u6d4b\uff0c\u53ef\u4ee5\u5e2e\u52a9\u4fdd\u62a4\u60a8\u7684\u6570\u636e\u514d\u53d7\u635f\u574f\u6216\u635f\u5931\u3002<\/li>\n\n\n\n<li>\u53ef\u6269\u5c55\u6027\uff1aPostgreSQL\u53ef\u4ee5\u5728\u5404\u79cd\u89c4\u6a21\u7684\u73af\u5883\u4e2d\u8fd0\u884c\uff0c\u5e76\u4e14\u53ef\u4ee5\u652f\u6301\u5927\u89c4\u6a21\u7684\u6570\u636e\u96c6\u3002\u5b83\u7684\u6269\u5c55\u6027\u975e\u5e38\u5f3a\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u901a\u8fc7\u6dfb\u52a0\u66f4\u591a\u7684\u8282\u70b9\u548c\u786c\u4ef6\u8d44\u6e90\u6765\u6269\u5c55\u6570\u636e\u5904\u7406\u80fd\u529b\u3002PostgreSQL\u8fd8\u63d0\u4f9b\u4e86\u591a\u79cd\u96c6\u7fa4\u65b9\u6848\uff0c\u4f7f\u5f97\u7528\u6237\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u8fdb\u884c\u9009\u62e9\u3002<\/li>\n\n\n\n<li>\u529f\u80fd\u4e30\u5bcc\uff1aPostgreSQL\u62e5\u6709\u4e30\u5bcc\u7684\u529f\u80fd\u96c6\uff0c\u5305\u62ec\u4e8b\u52a1\u652f\u6301\u3001\u591a\u7248\u672c\u5e76\u53d1\u63a7\u5236\u3001\u5b8c\u6574\u7684SQL\u652f\u6301\u3001\u9ad8\u7ea7\u67e5\u8be2\u652f\u6301\u3001\u5730\u7406\u7a7a\u95f4\u6570\u636e\u5904\u7406\u3001JSON\u548cXML\u652f\u6301\u3001PL\/SQL\u8bed\u8a00\u652f\u6301\u3001\u5907\u4efd\u548c\u6062\u590d\u652f\u6301\u7b49\u7b49\u3002\u8fd9\u4e9b\u529f\u80fd\u4f7f\u5f97PostgreSQL\u6210\u4e3a\u4e86\u4e00\u6b3e\u975e\u5e38\u7075\u6d3b\u7684\u6570\u636e\u5e93\u7cfb\u7edf\uff0c\u53ef\u4ee5\u9002\u7528\u4e8e\u5404\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u5e94\u7528\u573a\u666f\u3002<\/li>\n\n\n\n<li>\u5b89\u5168\u6027\uff1aPostgreSQL\u662f\u4e00\u6b3e\u975e\u5e38\u5b89\u5168\u7684\u6570\u636e\u5e93\u7cfb\u7edf\uff0c\u5b83\u652f\u6301\u591a\u79cd\u5b89\u5168\u529f\u80fd\uff0c\u5982SSL\u52a0\u5bc6\u3001GSSAPI\u8ba4\u8bc1\u3001Kerberos\u8ba4\u8bc1\u3001\u6570\u636e\u52a0\u5bc6\u7b49\u7b49\u3002PostgreSQL\u8fd8\u63d0\u4f9b\u4e86\u8bb8\u591a\u5b89\u5168\u7279\u6027\uff0c\u5982\u8bbf\u95ee\u63a7\u5236\u3001\u5bc6\u7801\u7b56\u7565\u3001\u5ba1\u8ba1\u548c\u65e5\u5fd7\u8bb0\u5f55\u7b49\u7b49\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u5b89\u5168\u548c\u4fdd\u5bc6\u6027\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u9009\u62e9PostgreSQL\u4f5c\u4e3a\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u7684\u539f\u56e0\u5f88\u591a\uff0c\u5b83\u5177\u6709\u4e30\u5bcc\u7684\u529f\u80fd\u3001\u9ad8\u5ea6\u53ef\u9760\u3001\u9ad8\u5ea6\u53ef\u6269\u5c55\u548c\u9ad8\u5ea6\u5b89\u5168\u3002\u5b83\u662f\u4e00\u6b3e\u7075\u6d3b\u7684\u6570\u636e\u5e93\u7cfb\u7edf\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u89c4\u6a21\u548c\u7c7b\u578b\u7684\u5e94\u7528\u573a\u666f\uff0c\u5e76\u4e14\u5728\u5f00\u6e90\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d\u5177\u6709\u9886\u5148\u5730\u4f4d\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5982\u4f55\u4e0b\u8f7d\u4e0e\u5b89\u88c5PostgreSQL<\/p>\n\n\n\n<p>\u4e0b\u8f7d\u548c\u5b89\u88c5PostgreSQL\u975e\u5e38\u7b80\u5355\uff0c\u4ee5\u4e0b\u662f\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bbf\u95eePostgreSQL\u5b98\u65b9\u7f51\u7ad9\uff0c<a href=\"https:\/\/www.postgresql.org\/download\/\">https:\/\/www.postgresql.org\/download\/<\/a> \uff0c\u9009\u62e9\u9002\u5408\u60a8\u64cd\u4f5c\u7cfb\u7edf\u7684PostgreSQL\u7248\u672c\uff0c\u70b9\u51fb\u4e0b\u8f7d\u3002<\/li>\n\n\n\n<li>\u4e0b\u8f7d\u5b8c\u6210\u540e\uff0c\u53cc\u51fb\u4e0b\u8f7d\u7684\u5b89\u88c5\u5305\uff0c\u6839\u636e\u63d0\u793a\u8fdb\u884c\u5b89\u88c5\u3002<\/li>\n\n\n\n<li>\u5728\u5b89\u88c5\u5411\u5bfc\u4e2d\uff0c\u60a8\u53ef\u4ee5\u9009\u62e9\u5b89\u88c5PostgreSQL\u7684\u8def\u5f84\u548c\u9ed8\u8ba4\u7aef\u53e3\u53f7\u7b49\u4fe1\u606f\u3002\u5982\u679c\u60a8\u4e0d\u786e\u5b9a\uff0c\u53ef\u4ee5\u9009\u62e9\u9ed8\u8ba4\u8bbe\u7f6e\u3002<\/li>\n\n\n\n<li>\u5728\u5b89\u88c5\u8fc7\u7a0b\u4e2d\uff0c\u60a8\u9700\u8981\u8bbe\u7f6e\u8d85\u7ea7\u7528\u6237\u5bc6\u7801\u3002\u8fd9\u662f\u5b89\u88c5\u8fc7\u7a0b\u4e2d\u6700\u91cd\u8981\u7684\u4e00\u6b65\uff0c\u56e0\u4e3a\u8d85\u7ea7\u7528\u6237\u5177\u6709\u6700\u9ad8\u7684\u6743\u9650\uff0c\u53ef\u4ee5\u8bbf\u95ee\u548c\u4fee\u6539\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u6570\u636e\u3002\u8bf7\u52a1\u5fc5\u9009\u62e9\u4e00\u4e2a\u5f3a\u5bc6\u7801\uff0c\u4ee5\u4fdd\u8bc1\u60a8\u7684\u6570\u636e\u5b89\u5168\u3002<\/li>\n\n\n\n<li>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u60a8\u53ef\u4ee5\u542f\u52a8PostgreSQL\u670d\u52a1\u3002\u5728Windows\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u5728\u201c\u5f00\u59cb\u83dc\u5355\u201d\u4e2d\u627e\u5230PostgreSQL\uff0c\u5e76\u542f\u52a8\u670d\u52a1\u3002\u5728Linux\u6216Mac\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u5728\u7ec8\u7aef\u4e2d\u8fd0\u884c\u547d\u4ee4\u6765\u542f\u52a8PostgreSQL\u670d\u52a1\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u60a8\u9700\u8981\u4f7f\u7528\u56fe\u5f62\u5316\u7ba1\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u4e0b\u8f7d\u548c\u5b89\u88c5pgAdmin\u3002pgAdmin\u662f\u4e00\u4e2a\u6d41\u884c\u7684\u56fe\u5f62\u5316\u7ba1\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u8ba9\u60a8\u8f7b\u677e\u5730\u7ba1\u7406PostgreSQL\u6570\u636e\u5e93\u3002<\/li>\n\n\n\n<li>\u914d\u7f6e\u73af\u5883\u53d8\u91cf\u3002\u5c06PostgreSQL\u7684bin\u76ee\u5f55\u6dfb\u52a0\u5230\u73af\u5883\u53d8\u91cf\u4e2d\uff0c\u4ee5\u4fbf\u60a8\u53ef\u4ee5\u5728\u7ec8\u7aef\u6216\u547d\u4ee4\u63d0\u793a\u7b26\u4e2d\u8fd0\u884cPostgreSQL\u7684\u547d\u4ee4\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u81f3\u6b64\uff0c\u60a8\u5df2\u7ecf\u6210\u529f\u5730\u4e0b\u8f7d\u548c\u5b89\u88c5\u4e86PostgreSQL\u6570\u636e\u5e93\u3002\u5982\u679c\u60a8\u9700\u8981\u521b\u5efa\u548c\u7ba1\u7406\u6570\u636e\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528PostgreSQL\u7684\u547d\u4ee4\u884c\u754c\u9762\u6216pgAdmin\u7b49\u56fe\u5f62\u5316\u5de5\u5177\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5982\u4f55\u914d\u7f6e\u73af\u5883\u53d8\u91cf<\/p>\n\n\n\n<p>\u914d\u7f6e\u73af\u5883\u53d8\u91cf\u662f\u4e3a\u4e86\u8ba9\u60a8\u5728\u7ec8\u7aef\u6216\u547d\u4ee4\u63d0\u793a\u7b26\u4e2d\u8fd0\u884cPostgreSQL\u7684\u547d\u4ee4\u66f4\u52a0\u65b9\u4fbf\u3002\u4ee5\u4e0b\u662f\u5728Windows\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u914d\u7f6e\u73af\u5883\u53d8\u91cf\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6253\u5f00\u201c\u63a7\u5236\u9762\u677f\u201d\uff0c\u5e76\u70b9\u51fb\u201c\u7cfb\u7edf\u548c\u5b89\u5168\u201d\u3002<\/li>\n\n\n\n<li>\u70b9\u51fb\u201c\u7cfb\u7edf\u201d\uff0c\u7136\u540e\u70b9\u51fb\u201c\u9ad8\u7ea7\u7cfb\u7edf\u8bbe\u7f6e\u201d\u3002<\/li>\n\n\n\n<li>\u5728\u201c\u9ad8\u7ea7\u201d\u9009\u9879\u5361\u4e0b\uff0c\u70b9\u51fb\u201c\u73af\u5883\u53d8\u91cf\u201d\u3002<\/li>\n\n\n\n<li>\u5728\u201c\u7cfb\u7edf\u53d8\u91cf\u201d\u90e8\u5206\uff0c\u627e\u5230\u201cPath\u201d\u53d8\u91cf\uff0c\u5e76\u70b9\u51fb\u201c\u7f16\u8f91\u201d\u3002<\/li>\n\n\n\n<li>\u5728\u201c\u7f16\u8f91\u73af\u5883\u53d8\u91cf\u201d\u7a97\u53e3\u4e2d\uff0c\u70b9\u51fb\u201c\u65b0\u5efa\u201d\u5e76\u8f93\u5165PostgreSQL\u7684bin\u76ee\u5f55\u8def\u5f84\uff0c\u4f8b\u5982\u201cC:\\Program Files\\PostgreSQL\\14\\bin\u201d\uff08\u8fd9\u91cc\u5047\u8bbePostgreSQL\u5b89\u88c5\u5728C\u76d8Program Files\u6587\u4ef6\u5939\u4e0b\uff0c\u7248\u672c\u4e3a14\uff09\u3002<\/li>\n\n\n\n<li>\u70b9\u51fb\u201c\u786e\u5b9a\u201d\u5173\u95ed\u6240\u6709\u7a97\u53e3\uff0c\u5e76\u91cd\u65b0\u542f\u52a8\u7ec8\u7aef\u6216\u547d\u4ee4\u63d0\u793a\u7b26\u7a97\u53e3\u3002<\/li>\n\n\n\n<li>\u68c0\u67e5\u662f\u5426\u914d\u7f6e\u6210\u529f\u3002\u5728\u7ec8\u7aef\u6216\u547d\u4ee4\u63d0\u793a\u7b26\u7a97\u53e3\u4e2d\u8f93\u5165\u201cpsql\u201d\uff0c\u5982\u679c\u80fd\u591f\u770b\u5230PostgreSQL\u7684\u547d\u4ee4\u884c\u754c\u9762\uff0c\u5219\u8bf4\u660e\u914d\u7f6e\u6210\u529f\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5728Linux\u6216Mac\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u914d\u7f6e\u73af\u5883\u53d8\u91cf\u7684\u65b9\u6cd5\u4e0eWindows\u7565\u6709\u4e0d\u540c\uff0c\u4ee5\u4e0b\u662f\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6253\u5f00\u7ec8\u7aef\uff0c\u8fdb\u5165\u5f53\u524d\u7528\u6237\u7684\u4e3b\u76ee\u5f55\u3002<\/li>\n\n\n\n<li>\u6253\u5f00.bashrc\u6587\u4ef6\uff0c\u5982\u679c\u4e0d\u5b58\u5728\u5219\u65b0\u5efa\u3002\u547d\u4ee4\u5982\u4e0b\uff1aCopy code<code>vi .bashrc<\/code><\/li>\n\n\n\n<li>\u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u4ee5\u4e0b\u4ee3\u7801\uff1arubyCopy code<code>export PATH=$PATH:\/usr\/lib\/postgresql\/&lt;version&gt;\/bin <\/code>\u5176\u4e2d\uff0c&lt;version&gt;\u4ee3\u8868PostgreSQL\u7684\u7248\u672c\u53f7\uff0c\u4f8b\u59829.6\u300110\u300111\u7b49\u3002<\/li>\n\n\n\n<li>\u4fdd\u5b58\u6587\u4ef6\u5e76\u9000\u51fa\u7f16\u8f91\u5668\u3002<\/li>\n\n\n\n<li>\u5728\u7ec8\u7aef\u4e2d\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4\uff0c\u4f7f\u73af\u5883\u53d8\u91cf\u751f\u6548\uff1abashCopy code<code>source .bashrc<\/code><\/li>\n\n\n\n<li>\u68c0\u67e5\u662f\u5426\u914d\u7f6e\u6210\u529f\u3002\u5728\u7ec8\u7aef\u4e2d\u8f93\u5165\u201cpsql\u201d\uff0c\u5982\u679c\u80fd\u591f\u770b\u5230PostgreSQL\u7684\u547d\u4ee4\u884c\u754c\u9762\uff0c\u5219\u8bf4\u660e\u914d\u7f6e\u6210\u529f\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u914d\u7f6e\u73af\u5883\u53d8\u91cf\u540e\uff0c\u60a8\u5c31\u53ef\u4ee5\u5728\u7ec8\u7aef\u6216\u547d\u4ee4\u63d0\u793a\u7b26\u7a97\u53e3\u4e2d\u66f4\u52a0\u65b9\u4fbf\u5730\u8fd0\u884cPostgreSQL\u7684\u547d\u4ee4\u4e86\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5982\u4f55\u5b89\u88c5\u56fe\u5f62\u5316\u7ba1\u7406\u5de5\u5177pgAdmin<\/p>\n\n\n\n<p>pgAdmin\u662f\u4e00\u6b3e\u5e38\u7528\u7684\u56fe\u5f62\u5316\u7ba1\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u8ba9\u60a8\u66f4\u52a0\u65b9\u4fbf\u5730\u7ba1\u7406PostgreSQL\u6570\u636e\u5e93\u3002\u4ee5\u4e0b\u662f\u5728Windows\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u5b89\u88c5pgAdmin\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bbf\u95eepgAdmin\u5b98\u65b9\u7f51\u7ad9<a href=\"https:\/\/www.pgadmin.org\/download\/%EF%BC%8C%E9%80%89%E6%8B%A9%E9%80%82%E5%90%88%E6%82%A8%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E7%9A%84pgAdmin%E7%89%88%E6%9C%AC%EF%BC%8C%E7%82%B9%E5%87%BB%E4%B8%8B%E8%BD%BD%E3%80%82\">https:\/\/www.pgadmin.org\/download\/\uff0c\u9009\u62e9\u9002\u5408\u60a8\u64cd\u4f5c\u7cfb\u7edf\u7684pgAdmin\u7248\u672c\uff0c\u70b9\u51fb\u4e0b\u8f7d\u3002<\/a><\/li>\n\n\n\n<li>\u4e0b\u8f7d\u5b8c\u6210\u540e\uff0c\u53cc\u51fb\u4e0b\u8f7d\u7684\u5b89\u88c5\u5305\uff0c\u6839\u636e\u63d0\u793a\u8fdb\u884c\u5b89\u88c5\u3002<\/li>\n\n\n\n<li>\u5728\u5b89\u88c5\u5411\u5bfc\u4e2d\uff0c\u60a8\u53ef\u4ee5\u9009\u62e9\u5b89\u88c5pgAdmin\u7684\u8def\u5f84\u548c\u8bed\u8a00\u7b49\u4fe1\u606f\u3002\u5982\u679c\u60a8\u4e0d\u786e\u5b9a\uff0c\u53ef\u4ee5\u9009\u62e9\u9ed8\u8ba4\u8bbe\u7f6e\u3002<\/li>\n\n\n\n<li>\u5728\u5b89\u88c5\u8fc7\u7a0b\u4e2d\uff0c\u60a8\u9700\u8981\u8bbe\u7f6epgAdmin\u7684\u7ba1\u7406\u5458\u5bc6\u7801\u3002\u8fd9\u662f\u5b89\u88c5\u8fc7\u7a0b\u4e2d\u6700\u91cd\u8981\u7684\u4e00\u6b65\uff0c\u56e0\u4e3a\u7ba1\u7406\u5458\u5177\u6709\u6700\u9ad8\u7684\u6743\u9650\uff0c\u53ef\u4ee5\u8bbf\u95ee\u548c\u4fee\u6539pgAdmin\u7684\u6240\u6709\u6570\u636e\u3002\u8bf7\u52a1\u5fc5\u9009\u62e9\u4e00\u4e2a\u5f3a\u5bc6\u7801\uff0c\u4ee5\u4fdd\u8bc1\u60a8\u7684\u6570\u636e\u5b89\u5168\u3002<\/li>\n\n\n\n<li>\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u60a8\u53ef\u4ee5\u542f\u52a8pgAdmin\u3002\u5728Windows\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u5728\u201c\u5f00\u59cb\u83dc\u5355\u201d\u4e2d\u627e\u5230pgAdmin\uff0c\u5e76\u542f\u52a8\u670d\u52a1\u3002<\/li>\n\n\n\n<li>\u8fde\u63a5PostgreSQL\u6570\u636e\u5e93\u3002\u5728pgAdmin\u754c\u9762\u4e2d\uff0c\u70b9\u51fb\u201c\u6dfb\u52a0\u670d\u52a1\u5668\u201d\u6309\u94ae\uff0c\u8f93\u5165\u8fde\u63a5\u4fe1\u606f\uff0c\u4f8b\u5982\u670d\u52a1\u5668\u540d\u79f0\u3001\u4e3b\u673a\u5730\u5740\u3001\u7aef\u53e3\u53f7\u3001\u7528\u6237\u540d\u548c\u5bc6\u7801\u7b49\u3002\u5982\u679c\u60a8\u5df2\u7ecf\u5b89\u88c5\u597dPostgreSQL\u6570\u636e\u5e93\uff0c\u8fd9\u4e9b\u4fe1\u606f\u53ef\u4ee5\u5728PostgreSQL\u7684\u5b89\u88c5\u6587\u4ef6\u5939\u4e0b\u7684pg_hba.conf\u6587\u4ef6\u4e2d\u627e\u5230\u3002<\/li>\n\n\n\n<li>\u4fdd\u5b58\u8fde\u63a5\u4fe1\u606f\uff0c\u5e76\u6d4b\u8bd5\u8fde\u63a5\u3002\u5982\u679c\u8fde\u63a5\u6210\u529f\uff0c\u60a8\u5c31\u53ef\u4ee5\u5728pgAdmin\u754c\u9762\u4e2d\u7ba1\u7406\u548c\u64cd\u4f5cPostgreSQL\u6570\u636e\u5e93\u4e86\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5728Linux\u6216Mac\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u5b89\u88c5pgAdmin\u7684\u65b9\u6cd5\u4e0eWindows\u7565\u6709\u4e0d\u540c\u3002\u60a8\u53ef\u4ee5\u5728pgAdmin\u5b98\u65b9\u7f51\u7ad9\u4e0a\u627e\u5230\u9002\u5408\u60a8\u64cd\u4f5c\u7cfb\u7edf\u7684\u5b89\u88c5\u6307\u5357\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5982\u4f55\u521b\u5efa\u4e0e\u7ba1\u7406\u6570\u636e\u5e93\u7528\u6237<\/p>\n\n\n\n<p>\u5728PostgreSQL\u4e2d\uff0c\u7528\u6237\u662f\u6570\u636e\u5e93\u7684\u6838\u5fc3\u6982\u5ff5\uff0c\u6bcf\u4e2a\u7528\u6237\u90fd\u6709\u4e0d\u540c\u7684\u8bbf\u95ee\u6743\u9650\u548c\u89d2\u8272\u3002\u4ee5\u4e0b\u662f\u5728PostgreSQL\u4e2d\u521b\u5efa\u548c\u7ba1\u7406\u6570\u636e\u5e93\u7528\u6237\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u767b\u5f55PostgreSQL\u3002\u5728\u7ec8\u7aef\u6216\u547d\u4ee4\u63d0\u793a\u7b26\u7a97\u53e3\u4e2d\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4\u767b\u5f55PostgreSQL\uff1aphpCopy code<code>psql -U &lt;\u7528\u6237\u540d&gt; -d &lt;\u6570\u636e\u5e93\u540d&gt; <\/code>\u5176\u4e2d\uff0c&lt;\u7528\u6237\u540d&gt;\u662f\u60a8\u5e0c\u671b\u767b\u5f55\u7684\u7528\u6237\u540d\uff0c&lt;\u6570\u636e\u5e93\u540d&gt;\u662f\u60a8\u5e0c\u671b\u767b\u5f55\u7684\u6570\u636e\u5e93\u540d\u79f0\u3002<\/li>\n\n\n\n<li>\u521b\u5efa\u7528\u6237\u3002\u5728PostgreSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528CREATE USER\u547d\u4ee4\u6765\u521b\u5efa\u7528\u6237\u3002\u4f8b\u5982\uff0c\u8981\u521b\u5efa\u540d\u4e3a\u201cnewuser\u201d\u7684\u7528\u6237\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1asqlCopy code<code>CREATE USER newuser WITH PASSWORD 'mypassword'; <\/code>\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201cnewuser\u201d\u7684\u7528\u6237\uff0c\u5e76\u5c06\u5176\u5bc6\u7801\u8bbe\u7f6e\u4e3a\u201cmypassword\u201d\u3002\u5982\u679c\u60a8\u4e0d\u6307\u5b9a\u5bc6\u7801\uff0c\u5219\u7cfb\u7edf\u4f1a\u63d0\u793a\u60a8\u8f93\u5165\u5bc6\u7801\u3002<\/li>\n\n\n\n<li>\u6388\u6743\u7528\u6237\u3002\u5728PostgreSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528GRANT\u547d\u4ee4\u6388\u6743\u7528\u6237\u3002\u4f8b\u5982\uff0c\u8981\u5c06\u201cnewuser\u201d\u7528\u6237\u6388\u4e88\u5bf9\u201cmydatabase\u201d\u6570\u636e\u5e93\u7684\u8bfb\u5199\u6743\u9650\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1acssCopy code<code>GRANT ALL PRIVILEGES ON mydatabase TO newuser; <\/code>\u8fd9\u5c06\u6388\u4e88\u201cnewuser\u201d\u7528\u6237\u5bf9\u201cmydatabase\u201d\u6570\u636e\u5e93\u7684\u6240\u6709\u6743\u9650\u3002\u60a8\u8fd8\u53ef\u4ee5\u4f7f\u7528GRANT\u547d\u4ee4\u6388\u4e88\u5176\u4ed6\u7279\u5b9a\u7684\u6743\u9650\u3002<\/li>\n\n\n\n<li>\u4fee\u6539\u7528\u6237\u3002\u5728PostgreSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528ALTER USER\u547d\u4ee4\u4fee\u6539\u7528\u6237\u3002\u4f8b\u5982\uff0c\u8981\u4fee\u6539\u201cnewuser\u201d\u7528\u6237\u7684\u5bc6\u7801\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1asqlCopy code<code>ALTER USER newuser WITH PASSWORD 'newpassword'; <\/code>\u8fd9\u5c06\u4fee\u6539\u201cnewuser\u201d\u7528\u6237\u7684\u5bc6\u7801\u4e3a\u201cnewpassword\u201d\u3002<\/li>\n\n\n\n<li>\u5220\u9664\u7528\u6237\u3002\u5728PostgreSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528DROP USER\u547d\u4ee4\u5220\u9664\u7528\u6237\u3002\u4f8b\u5982\uff0c\u8981\u5220\u9664\u201cnewuser\u201d\u7528\u6237\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1asqlCopy code<code>DROP USER newuser; <\/code>\u8fd9\u5c06\u5220\u9664\u201cnewuser\u201d\u7528\u6237\u53ca\u5176\u6240\u6709\u6743\u9650\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u521b\u5efa\u548c\u7ba1\u7406PostgreSQL\u6570\u636e\u5e93\u7528\u6237\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u53ef\u4ee5\u5e2e\u52a9\u60a8\u63a7\u5236\u6570\u636e\u5e93\u7684\u5b89\u5168\u548c\u8bbf\u95ee\u6743\u9650\u3002\u5728PostgreSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528CREATE USER\u3001GRANT\u3001ALTER USER\u548cDROP USER\u7b49\u547d\u4ee4\u6765\u521b\u5efa\u3001\u6388\u6743\u3001\u4fee\u6539\u548c\u5220\u9664\u7528\u6237\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u6570\u636e\u5e93\u3001\u6570\u636e\u8868\u3001\u5217\u548c\u884c\u7684\u6982\u5ff5<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u6709\u56db\u4e2a\u6838\u5fc3\u6982\u5ff5\uff1a\u6570\u636e\u5e93\u3001\u6570\u636e\u8868\u3001\u5217\u548c\u884c\u3002\u4ee5\u4e0b\u662f\u8fd9\u4e9b\u6982\u5ff5\u7684\u8be6\u7ec6\u89e3\u91ca\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6570\u636e\u5e93\uff1a\u6570\u636e\u5e93\u662f\u4e00\u4e2a\u96c6\u5408\uff0c\u5b83\u5305\u542b\u4e86\u4e00\u7ec4\u76f8\u5173\u7684\u6570\u636e\u3002\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u6570\u636e\u5e93\u901a\u5e38\u7531\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u636e\u8868\u7ec4\u6210\uff0c\u53ef\u4ee5\u4f7f\u7528\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08DBMS\uff09\u6765\u521b\u5efa\u3001\u7ba1\u7406\u548c\u67e5\u8be2\u6570\u636e\u5e93\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u8868\uff1a\u6570\u636e\u8868\u662f\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u79cd\u7ed3\u6784\u5316\u6570\u636e\u5bf9\u8c61\uff0c\u5b83\u7531\u884c\u548c\u5217\u7ec4\u6210\uff0c\u7c7b\u4f3c\u4e8e\u7535\u5b50\u8868\u683c\u3002\u6bcf\u4e2a\u6570\u636e\u8868\u90fd\u6709\u4e00\u4e2a\u540d\u79f0\uff0c\u53ef\u4ee5\u5b58\u50a8\u4e00\u7ec4\u76f8\u5173\u7684\u6570\u636e\u3002\u6bcf\u4e2a\u6570\u636e\u8868\u90fd\u7531\u591a\u4e2a\u5217\u548c\u591a\u4e2a\u884c\u7ec4\u6210\u3002<\/li>\n\n\n\n<li>\u5217\uff1a\u5217\u662f\u6570\u636e\u8868\u4e2d\u7684\u4e00\u4e2a\u5b57\u6bb5\uff0c\u7528\u4e8e\u5b58\u50a8\u7279\u5b9a\u7c7b\u578b\u7684\u6570\u636e\u3002\u6bcf\u5217\u90fd\u6709\u4e00\u4e2a\u540d\u79f0\u548c\u6570\u636e\u7c7b\u578b\uff0c\u4f8b\u5982\u6574\u6570\u3001\u5b57\u7b26\u3001\u65e5\u671f\u7b49\u3002\u5217\u5b9a\u4e49\u4e86\u6570\u636e\u8868\u7684\u7ed3\u6784\uff0c\u786e\u5b9a\u4e86\u53ef\u4ee5\u5b58\u50a8\u54ea\u4e9b\u7c7b\u578b\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u884c\uff1a\u884c\u662f\u6570\u636e\u8868\u4e2d\u7684\u4e00\u4e2a\u8bb0\u5f55\uff0c\u5305\u542b\u4e86\u6570\u636e\u8868\u4e2d\u7684\u4e00\u4e2a\u5b9e\u4f8b\u3002\u6bcf\u884c\u5305\u542b\u4e86\u591a\u4e2a\u5217\uff0c\u6bcf\u4e2a\u5217\u5b58\u50a8\u4e00\u4e2a\u7279\u5b9a\u7684\u503c\u3002\u6bcf\u884c\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u6807\u8bc6\u7b26\uff0c\u79f0\u4e3a\u4e3b\u952e\uff0c\u7528\u4e8e\u533a\u5206\u6570\u636e\u8868\u4e2d\u7684\u4e0d\u540c\u8bb0\u5f55\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u6570\u636e\u5e93\u3001\u6570\u636e\u8868\u3001\u5217\u548c\u884c\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u6838\u5fc3\u6982\u5ff5\uff0c\u6bcf\u4e2a\u6982\u5ff5\u90fd\u6709\u81ea\u5df1\u7684\u542b\u4e49\u548c\u4f5c\u7528\u3002\u6570\u636e\u5e93\u5305\u542b\u4e00\u7ec4\u76f8\u5173\u7684\u6570\u636e\u8868\uff0c\u6570\u636e\u8868\u7531\u5217\u548c\u884c\u7ec4\u6210\uff0c\u5217\u5b9a\u4e49\u4e86\u6570\u636e\u8868\u7684\u7ed3\u6784\uff0c\u884c\u5b58\u50a8\u4e86\u6570\u636e\u8868\u4e2d\u7684\u4e00\u4e2a\u5b9e\u4f8b\u3002\u4e86\u89e3\u8fd9\u4e9b\u6982\u5ff5\u53ef\u4ee5\u5e2e\u52a9\u60a8\u66f4\u597d\u5730\u7406\u89e3\u548c\u7ba1\u7406\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5e38\u7528\u6570\u636e\u7c7b\u578b<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u4e0d\u540c\u7684\u6570\u636e\u7c7b\u578b\u7528\u4e8e\u5b58\u50a8\u4e0d\u540c\u7684\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u6570\u636e\u7c7b\u578b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6574\u6570\u7c7b\u578b\uff08integer\uff09\uff1a\u7528\u4e8e\u5b58\u50a8\u6574\u6570\u503c\uff0c\u901a\u5e38\u4f7f\u75284\u5b57\u8282\u62168\u5b57\u8282\u3002\u5728PostgreSQL\u4e2d\uff0c\u6574\u6570\u7c7b\u578b\u6709int\u3001smallint\u548cbigint\u4e09\u79cd\u3002<\/li>\n\n\n\n<li>\u5c0f\u6570\u7c7b\u578b\uff08numeric\uff09\uff1a\u7528\u4e8e\u5b58\u50a8\u7cbe\u786e\u7684\u5c0f\u6570\u503c\uff0c\u4f8b\u5982\u8d27\u5e01\u503c\u6216\u79d1\u5b66\u8ba1\u7b97\u4e2d\u7684\u6570\u503c\u3002\u5728PostgreSQL\u4e2d\uff0c\u5c0f\u6570\u7c7b\u578b\u53ef\u4ee5\u6307\u5b9a\u7cbe\u5ea6\u548c\u5c0f\u6570\u4f4d\u6570\uff0c\u4f8b\u5982numeric(10,2)\u8868\u793a\u6700\u591a\u670910\u4f4d\u6570\uff0c\u5176\u4e2d2\u4f4d\u662f\u5c0f\u6570\u4f4d\u6570\u3002<\/li>\n\n\n\n<li>\u5b57\u7b26\u7c7b\u578b\uff08character\uff09\uff1a\u7528\u4e8e\u5b58\u50a8\u6587\u672c\u5b57\u7b26\u4e32\uff0c\u4f8b\u5982\u540d\u79f0\u3001\u5730\u5740\u6216\u63cf\u8ff0\u3002\u5728PostgreSQL\u4e2d\uff0c\u5b57\u7b26\u7c7b\u578b\u6709char\u3001varchar\u548ctext\u4e09\u79cd\u3002<\/li>\n\n\n\n<li>\u65e5\u671f\u548c\u65f6\u95f4\u7c7b\u578b\uff08date\/time\uff09\uff1a\u7528\u4e8e\u5b58\u50a8\u65e5\u671f\u548c\u65f6\u95f4\u503c\u3002\u5728PostgreSQL\u4e2d\uff0c\u65e5\u671f\u548c\u65f6\u95f4\u7c7b\u578b\u6709date\u3001time\u3001timestamp\u548cinterval\u56db\u79cd\u3002<\/li>\n\n\n\n<li>\u5e03\u5c14\u7c7b\u578b\uff08boolean\uff09\uff1a\u7528\u4e8e\u5b58\u50a8\u771f\/\u5047\u503c\u3002<\/li>\n\n\n\n<li>\u679a\u4e3e\u7c7b\u578b\uff08enum\uff09\uff1a\u7528\u4e8e\u5b58\u50a8\u9884\u5b9a\u4e49\u7684\u9009\u9879\u5217\u8868\u3002\u5728PostgreSQL\u4e2d\uff0c\u679a\u4e3e\u7c7b\u578b\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u9009\u9879\u5217\u8868\uff0c\u5e76\u5c06\u5176\u7528\u4f5c\u5217\u7c7b\u578b\u3002<\/li>\n\n\n\n<li>\u6570\u7ec4\u7c7b\u578b\uff08array\uff09\uff1a\u7528\u4e8e\u5b58\u50a8\u591a\u4e2a\u503c\u7684\u96c6\u5408\u3002\u5728PostgreSQL\u4e2d\uff0c\u6570\u7ec4\u7c7b\u578b\u53ef\u4ee5\u5305\u542b\u4efb\u4f55\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u7684\u503c\u3002<\/li>\n\n\n\n<li>JSON\u548cXML\u7c7b\u578b\uff1a\u7528\u4e8e\u5b58\u50a8JSON\u548cXML\u6570\u636e\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u4e0d\u540c\u7684\u6570\u636e\u7c7b\u578b\u7528\u4e8e\u5b58\u50a8\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u3002\u5728PostgreSQL\u4e2d\uff0c\u5e38\u7528\u7684\u6570\u636e\u7c7b\u578b\u5305\u62ec\u6574\u6570\u3001\u5c0f\u6570\u3001\u5b57\u7b26\u3001\u65e5\u671f\u548c\u65f6\u95f4\u3001\u5e03\u5c14\u3001\u679a\u4e3e\u3001\u6570\u7ec4\u3001JSON\u548cXML\u7c7b\u578b\u3002\u9009\u62e9\u6b63\u786e\u7684\u6570\u636e\u7c7b\u578b\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u5b58\u50a8\u6548\u7387\uff0c\u5e76\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91caSQL\u8bed\u8a00\u7b80\u4ecb<\/p>\n\n\n\n<p>SQL\uff08Structured Query Language\uff09\u662f\u4e00\u79cd\u7528\u4e8e\u7ba1\u7406\u548c\u64cd\u4f5c\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u8bed\u8a00\u3002\u5b83\u662f\u4e00\u79cd\u6807\u51c6\u5316\u7684\u8bed\u8a00\uff0c\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08DBMS\uff09\u4e2d\u4f7f\u7528\u3002\u4ee5\u4e0b\u662fSQL\u8bed\u8a00\u7684\u7b80\u4ecb\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6570\u636e\u5e93\u64cd\u4f5c\uff1aSQL\u8bed\u8a00\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u548c\u5220\u9664\u6570\u636e\u5e93\uff0c\u4ee5\u53ca\u5728\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u548c\u5220\u9664\u6570\u636e\u8868\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u8868\u64cd\u4f5c\uff1aSQL\u8bed\u8a00\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u548c\u5220\u9664\u6570\u636e\u8868\uff0c\u4ee5\u53ca\u5728\u6570\u636e\u8868\u4e2d\u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u67e5\u8be2\uff1aSQL\u8bed\u8a00\u53ef\u4ee5\u7528\u4e8e\u4ece\u6570\u636e\u8868\u4e2d\u67e5\u8be2\u6570\u636e\uff0c\u4ee5\u53ca\u5bf9\u6570\u636e\u8fdb\u884c\u6392\u5e8f\u3001\u8fc7\u6ee4\u548c\u805a\u5408\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u4fee\u6539\uff1aSQL\u8bed\u8a00\u53ef\u4ee5\u7528\u4e8e\u4fee\u6539\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\uff0c\u5305\u62ec\u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664\u64cd\u4f5c\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u7ea6\u675f\uff1aSQL\u8bed\u8a00\u53ef\u4ee5\u7528\u4e8e\u8bbe\u7f6e\u6570\u636e\u8868\u4e2d\u6570\u636e\u7684\u7ea6\u675f\u6761\u4ef6\uff0c\u4f8b\u5982\u552f\u4e00\u6027\u7ea6\u675f\u3001\u4e3b\u952e\u7ea6\u675f\u3001\u5916\u952e\u7ea6\u675f\u548c\u68c0\u67e5\u7ea6\u675f\u7b49\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u89c6\u56fe\uff1aSQL\u8bed\u8a00\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u548c\u7ba1\u7406\u6570\u636e\u89c6\u56fe\uff0c\u4ee5\u4fbf\u7528\u6237\u53ef\u4ee5\u65b9\u4fbf\u5730\u8bbf\u95ee\u548c\u67e5\u8be2\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u5b58\u50a8\u8fc7\u7a0b\u548c\u51fd\u6570\uff1aSQL\u8bed\u8a00\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u548c\u7ba1\u7406\u5b58\u50a8\u8fc7\u7a0b\u548c\u51fd\u6570\uff0c\u4ee5\u5b9e\u73b0\u590d\u6742\u7684\u6570\u636e\u5904\u7406\u548c\u8ba1\u7b97\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0cSQL\u8bed\u8a00\u662f\u4e00\u79cd\u7528\u4e8e\u7ba1\u7406\u548c\u64cd\u4f5c\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u8bed\u8a00\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u521b\u5efa\u548c\u5220\u9664\u6570\u636e\u5e93\u3001\u6570\u636e\u8868\u548c\u6570\u636e\u89c6\u56fe\uff0c\u4ee5\u53ca\u67e5\u8be2\u3001\u4fee\u6539\u548c\u7ea6\u675f\u6570\u636e\u3002SQL\u8bed\u8a00\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u7684\u6838\u5fc3\u7ec4\u6210\u90e8\u5206\uff0c\u638c\u63e1SQL\u8bed\u8a00\u53ef\u4ee5\u8ba9\u60a8\u66f4\u597d\u5730\u7406\u89e3\u548c\u7ba1\u7406\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5982\u4f55\u7528\u521b\u5efa\u6570\u636e\u8868<\/p>\n\n\n\n<p>\u5728PostgreSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528CREATE TABLE\u8bed\u53e5\u6765\u521b\u5efa\u6570\u636e\u8868\u3002\u4ee5\u4e0b\u662f\u521b\u5efa\u6570\u636e\u8868\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u786e\u5b9a\u6570\u636e\u8868\u7684\u540d\u79f0\u3002\u6570\u636e\u8868\u7684\u540d\u79f0\u5e94\u8be5\u6e05\u6670\u3001\u7b80\u6d01\uff0c\u5e76\u4e14\u80fd\u591f\u63cf\u8ff0\u6570\u636e\u8868\u4e2d\u5b58\u50a8\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u786e\u5b9a\u6570\u636e\u8868\u7684\u5217\u3002\u6570\u636e\u8868\u7684\u5217\u5b9a\u4e49\u4e86\u6570\u636e\u8868\u4e2d\u5b58\u50a8\u7684\u6570\u636e\u7c7b\u578b\u548c\u6570\u636e\u7ea6\u675f\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5b9a\u4e49\u6570\u636e\u8868\u4e2d\u7684\u6574\u6570\u3001\u5c0f\u6570\u3001\u5b57\u7b26\u3001\u65e5\u671f\u548c\u65f6\u95f4\u7b49\u6570\u636e\u7c7b\u578b\uff0c\u5e76\u5b9a\u4e49\u6bcf\u4e2a\u5217\u7684\u540d\u79f0\u3001\u6570\u636e\u7c7b\u578b\u3001\u957f\u5ea6\u3001\u9ed8\u8ba4\u503c\u548c\u7ea6\u675f\u6761\u4ef6\u3002<\/li>\n\n\n\n<li>\u521b\u5efa\u6570\u636e\u8868\u3002\u4f7f\u7528CREATE TABLE\u8bed\u53e5\u521b\u5efa\u6570\u636e\u8868\uff0c\u5e76\u6307\u5b9a\u6570\u636e\u8868\u7684\u540d\u79f0\u548c\u5217\u5b9a\u4e49\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u7684\u793a\u4f8b\uff1asqlCopy code<code>CREATE TABLE customers ( customer_id INTEGER PRIMARY KEY, first_name VARCHAR(50) NOT NULL, last_name VARCHAR(50) NOT NULL, email VARCHAR(50) UNIQUE, birth_date DATE ); <\/code>\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\uff0c\u5305\u542b\u4e94\u4e2a\u5217\uff1acustomer_id\u3001first_name\u3001last_name\u3001email\u548cbirth_date\u3002\u5176\u4e2d\uff0ccustomer_id\u662f\u4e3b\u952e\u5217\uff0cfirst_name\u548clast_name\u5217\u4e0d\u5141\u8bb8\u4e3a\u7a7a\u503c\uff0cemail\u5217\u5177\u6709\u552f\u4e00\u6027\u7ea6\u675f\u3002<\/li>\n\n\n\n<li>\u63d2\u5165\u6570\u636e\u3002\u521b\u5efa\u6570\u636e\u8868\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528INSERT INTO\u8bed\u53e5\u5c06\u6570\u636e\u63d2\u5165\u6570\u636e\u8868\u4e2d\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5411\u201ccustomers\u201d\u6570\u636e\u8868\u4e2d\u63d2\u5165\u4e00\u884c\u6570\u636e\u7684\u793a\u4f8b\uff1asqlCopy code<code>INSERT INTO customers (customer_id, first_name, last_name, email, birth_date) VALUES (1, 'John', 'Doe', 'john.doe@example.com', '1990-01-01'); <\/code>\u8fd9\u5c06\u5411\u201ccustomers\u201d\u6570\u636e\u8868\u4e2d\u63d2\u5165\u4e00\u884c\u6570\u636e\uff0c\u5176\u4e2d\u5305\u542b\u4e94\u4e2a\u503c\uff1acustomer_id\u4e3a1\uff0cfirst_name\u4e3a\u201cJohn\u201d\uff0clast_name\u4e3a\u201cDoe\u201d\uff0cemail\u4e3a\u201c<a href=\"mailto:john.doe@example.com\">john.doe@example.com<\/a>\u201d\uff0cbirth_date\u4e3a\u201c1990-01-01\u201d\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u521b\u5efa\u6570\u636e\u8868\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u57fa\u672c\u64cd\u4f5c\u4e4b\u4e00\uff0c\u53ef\u4ee5\u4f7f\u7528CREATE TABLE\u8bed\u53e5\u6765\u521b\u5efa\u6570\u636e\u8868\uff0c\u5e76\u6307\u5b9a\u6570\u636e\u8868\u7684\u540d\u79f0\u548c\u5217\u5b9a\u4e49\u3002\u521b\u5efa\u6570\u636e\u8868\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528INSERT INTO\u8bed\u53e5\u5c06\u6570\u636e\u63d2\u5165\u6570\u636e\u8868\u4e2d\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u4fee\u6539\u6570\u636e\u8868\u7ed3\u6784<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u4fee\u6539\u6570\u636e\u8868\u7ed3\u6784\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u7528\u4e8e\u6dfb\u52a0\u3001\u4fee\u6539\u6216\u5220\u9664\u6570\u636e\u8868\u4e2d\u7684\u5217\u6216\u7ea6\u675f\u6761\u4ef6\u7b49\u3002\u4ee5\u4e0b\u662f\u4fee\u6539\u6570\u636e\u8868\u7ed3\u6784\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6dfb\u52a0\u65b0\u5217\u3002\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u548cADD COLUMN\u5b50\u53e5\u53ef\u4ee5\u5411\u6570\u636e\u8868\u4e2d\u6dfb\u52a0\u65b0\u5217\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5411\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3a\u201cphone\u201d\u7684\u65b0\u5217\u7684\u793a\u4f8b\uff1asqlCopy code<code>ALTER TABLE customers ADD COLUMN phone VARCHAR(20); <\/code>\u8fd9\u5c06\u5411\u201ccustomers\u201d\u6570\u636e\u8868\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3a\u201cphone\u201d\u7684\u65b0\u5217\uff0c\u5176\u6570\u636e\u7c7b\u578b\u4e3aVARCHAR(20)\u3002<\/li>\n\n\n\n<li>\u4fee\u6539\u5217\u5b9a\u4e49\u3002\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u548cALTER COLUMN\u5b50\u53e5\u53ef\u4ee5\u4fee\u6539\u6570\u636e\u8868\u4e2d\u7684\u5217\u5b9a\u4e49\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5c06\u540d\u4e3a\u201cphone\u201d\u7684\u5217\u7684\u6570\u636e\u7c7b\u578b\u4fee\u6539\u4e3aVARCHAR(30)\u7684\u793a\u4f8b\uff1asqlCopy code<code>ALTER TABLE customers ALTER COLUMN phone TYPE VARCHAR(30); <\/code>\u8fd9\u5c06\u4fee\u6539\u201ccustomers\u201d\u6570\u636e\u8868\u4e2d\u7684\u201cphone\u201d\u5217\uff0c\u5c06\u5176\u6570\u636e\u7c7b\u578b\u4fee\u6539\u4e3aVARCHAR(30)\u3002<\/li>\n\n\n\n<li>\u5220\u9664\u5217\u3002\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u548cDROP COLUMN\u5b50\u53e5\u53ef\u4ee5\u5220\u9664\u6570\u636e\u8868\u4e2d\u7684\u5217\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u5220\u9664\u540d\u4e3a\u201cphone\u201d\u7684\u5217\u7684\u793a\u4f8b\uff1asqlCopy code<code>ALTER TABLE customers DROP COLUMN phone; <\/code>\u8fd9\u5c06\u4ece\u201ccustomers\u201d\u6570\u636e\u8868\u4e2d\u5220\u9664\u540d\u4e3a\u201cphone\u201d\u7684\u5217\u3002<\/li>\n\n\n\n<li>\u6dfb\u52a0\u7ea6\u675f\u6761\u4ef6\u3002\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u548cADD CONSTRAINT\u5b50\u53e5\u53ef\u4ee5\u5411\u6570\u636e\u8868\u4e2d\u6dfb\u52a0\u65b0\u7684\u7ea6\u675f\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5411\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3a\u201cunique_email\u201d\u7684\u552f\u4e00\u6027\u7ea6\u675f\u7684\u793a\u4f8b\uff1asqlCopy code<code>ALTER TABLE customers ADD CONSTRAINT unique_email UNIQUE (email); <\/code>\u8fd9\u5c06\u5411\u201ccustomers\u201d\u6570\u636e\u8868\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3a\u201cunique_email\u201d\u7684\u552f\u4e00\u6027\u7ea6\u675f\uff0c\u8be5\u7ea6\u675f\u5c06\u786e\u4fdd\u201cemail\u201d\u5217\u4e2d\u7684\u6240\u6709\u503c\u90fd\u662f\u552f\u4e00\u7684\u3002<\/li>\n\n\n\n<li>\u5220\u9664\u7ea6\u675f\u6761\u4ef6\u3002\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u548cDROP CONSTRAINT\u5b50\u53e5\u53ef\u4ee5\u5220\u9664\u6570\u636e\u8868\u4e2d\u7684\u7ea6\u675f\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u5220\u9664\u540d\u4e3a\u201cunique_email\u201d\u7684\u552f\u4e00\u6027\u7ea6\u675f\u7684\u793a\u4f8b\uff1asqlCopy code<code>ALTER TABLE customers DROP CONSTRAINT unique_email; <\/code>\u8fd9\u5c06\u4ece\u201ccustomers\u201d\u6570\u636e\u8868\u4e2d\u5220\u9664\u540d\u4e3a\u201cunique_email\u201d\u7684\u552f\u4e00\u6027\u7ea6\u675f\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u4fee\u6539\u6570\u636e\u8868\u7ed3\u6784\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u57fa\u672c\u64cd\u4f5c\u4e4b\u4e00\uff0c\u53ef\u4ee5\u7528\u4e8e\u6dfb\u52a0\u3001\u4fee\u6539\u6216\u5220\u9664\u6570\u636e\u8868\u4e2d\u7684\u5217\u6216\u7ea6\u675f\u6761\u4ef6\u7b49\u3002\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u6765\u4fee\u6539\u6570\u636e\u8868\u7ed3\u6784\uff0c\u5e76\u6307\u5b9a\u9700\u8981\u4fee\u6539\u7684\u5217\u6216\u7ea6\u675f\u6761\u4ef6\u3002\u4fee\u6539\u6570\u636e\u8868\u7ed3\u6784\u4e4b\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528INSERT\u3001UPDATE\u548cDELETE\u7b49\u8bed\u53e5\u6765\u64cd\u4f5c\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5220\u9664\u6570\u636e\u8868<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u5220\u9664\u6570\u636e\u8868\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u7528\u4e8e\u6e05\u9664\u4e0d\u518d\u9700\u8981\u7684\u6570\u636e\u8868\u6216\u6574\u4e2a\u6570\u636e\u5e93\u3002\u4ee5\u4e0b\u662f\u5220\u9664\u6570\u636e\u8868\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u786e\u8ba4\u8981\u5220\u9664\u7684\u6570\u636e\u8868\u3002\u5728\u6267\u884c\u5220\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u8981\u5220\u9664\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u4e0d\u518d\u9700\u8981\u5176\u4e2d\u5b58\u50a8\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u68c0\u67e5\u5173\u8054\u6570\u636e\u3002\u5982\u679c\u8981\u5220\u9664\u7684\u6570\u636e\u8868\u4e0e\u5176\u4ed6\u6570\u636e\u8868\u6709\u5173\u8054\u5173\u7cfb\uff0c\u53ef\u80fd\u9700\u8981\u5148\u5220\u9664\u8fd9\u4e9b\u6570\u636e\u8868\u6216\u66f4\u65b0\u5173\u8054\u7684\u5217\u503c\u3002<\/li>\n\n\n\n<li>\u5220\u9664\u6570\u636e\u8868\u3002\u4f7f\u7528DROP TABLE\u8bed\u53e5\u53ef\u4ee5\u5220\u9664\u6570\u636e\u8868\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5220\u9664\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u7684\u793a\u4f8b\uff1asqlCopy code<code>DROP TABLE customers; <\/code>\u8fd9\u5c06\u5220\u9664\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u53ca\u5176\u6240\u6709\u6570\u636e\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u5220\u9664\u6570\u636e\u8868\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u57fa\u672c\u64cd\u4f5c\u4e4b\u4e00\uff0c\u53ef\u4ee5\u4f7f\u7528DROP TABLE\u8bed\u53e5\u6765\u5220\u9664\u6570\u636e\u8868\u3002\u5728\u6267\u884c\u5220\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u8981\u5220\u9664\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u4e0d\u518d\u9700\u8981\u5176\u4e2d\u5b58\u50a8\u7684\u6570\u636e\u3002\u5982\u679c\u6570\u636e\u8868\u4e0e\u5176\u4ed6\u6570\u636e\u8868\u6709\u5173\u8054\u5173\u7cfb\uff0c\u53ef\u80fd\u9700\u8981\u5148\u5220\u9664\u8fd9\u4e9b\u6570\u636e\u8868\u6216\u66f4\u65b0\u5173\u8054\u7684\u5217\u503c\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u91cd\u547d\u540d\u6570\u636e\u8868<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u91cd\u547d\u540d\u6570\u636e\u8868\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u7528\u4e8e\u66f4\u6539\u6570\u636e\u8868\u540d\u79f0\u4ee5\u5339\u914d\u65b0\u7684\u547d\u540d\u89c4\u5219\u6216\u66f4\u6539\u6570\u636e\u8868\u7684\u7528\u9014\u3002\u4ee5\u4e0b\u662f\u91cd\u547d\u540d\u6570\u636e\u8868\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u786e\u8ba4\u8981\u91cd\u547d\u540d\u7684\u6570\u636e\u8868\u3002\u5728\u6267\u884c\u91cd\u547d\u540d\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u8981\u91cd\u547d\u540d\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u4e0d\u518d\u9700\u8981\u5176\u4e2d\u5b58\u50a8\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528RENAME\u547d\u4ee4\u3002\u5728PostgreSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528RENAME\u547d\u4ee4\u6765\u91cd\u547d\u540d\u6570\u636e\u8868\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5c06\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u91cd\u547d\u540d\u4e3a\u201cclients\u201d\u7684\u793a\u4f8b\uff1acssCopy code<code>RENAME TABLE customers TO clients; <\/code>\u8fd9\u5c06\u91cd\u547d\u540d\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e3a\u201cclients\u201d\u3002<\/li>\n\n\n\n<li>\u68c0\u67e5\u91cd\u547d\u540d\u7ed3\u679c\u3002\u5728\u6267\u884c\u91cd\u547d\u540d\u64cd\u4f5c\u4e4b\u540e\uff0c\u8bf7\u68c0\u67e5\u65b0\u6570\u636e\u8868\u540d\u79f0\u662f\u5426\u6b63\u786e\uff0c\u5e76\u786e\u4fdd\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u6ca1\u6709\u4e22\u5931\u6216\u635f\u574f\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u91cd\u547d\u540d\u6570\u636e\u8868\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u57fa\u672c\u64cd\u4f5c\u4e4b\u4e00\uff0c\u53ef\u4ee5\u4f7f\u7528RENAME\u547d\u4ee4\u6765\u91cd\u547d\u540d\u6570\u636e\u8868\u3002\u5728\u6267\u884c\u91cd\u547d\u540d\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u8981\u91cd\u547d\u540d\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u4e0d\u518d\u9700\u8981\u5176\u4e2d\u5b58\u50a8\u7684\u6570\u636e\u3002\u91cd\u547d\u540d\u6570\u636e\u8868\u4e4b\u540e\uff0c\u8bf7\u68c0\u67e5\u65b0\u6570\u636e\u8868\u540d\u79f0\u662f\u5426\u6b63\u786e\uff0c\u5e76\u786e\u4fdd\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u6ca1\u6709\u4e22\u5931\u6216\u635f\u574f\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5982\u4f55\u63d2\u5165\u6570\u636e\uff08INSERT\uff09<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u63d2\u5165\u6570\u636e\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u7528\u4e8e\u5411\u6570\u636e\u8868\u4e2d\u6dfb\u52a0\u65b0\u7684\u6570\u636e\u8bb0\u5f55\u3002\u4ee5\u4e0b\u662f\u63d2\u5165\u6570\u636e\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u786e\u5b9a\u8981\u63d2\u5165\u6570\u636e\u7684\u6570\u636e\u8868\u3002\u5728\u6267\u884c\u63d2\u5165\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u5b9a\u8981\u63d2\u5165\u6570\u636e\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u5df2\u7ecf\u521b\u5efa\u5e76\u5177\u6709\u6b63\u786e\u7684\u5217\u5b9a\u4e49\u548c\u6570\u636e\u7ea6\u675f\u3002<\/li>\n\n\n\n<li>\u786e\u5b9a\u8981\u63d2\u5165\u7684\u6570\u636e\u3002\u5728\u6267\u884c\u63d2\u5165\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u8981\u63d2\u5165\u7684\u6570\u636e\u503c\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u7b26\u5408\u6570\u636e\u8868\u4e2d\u5b9a\u4e49\u7684\u5217\u6570\u636e\u7c7b\u578b\u548c\u6570\u636e\u7ea6\u675f\u6761\u4ef6\u3002<\/li>\n\n\n\n<li>\u63d2\u5165\u6570\u636e\u3002\u4f7f\u7528INSERT INTO\u8bed\u53e5\u53ef\u4ee5\u5411\u6570\u636e\u8868\u4e2d\u63d2\u5165\u65b0\u7684\u6570\u636e\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5411\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u63d2\u5165\u65b0\u6570\u636e\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>INSERT INTO customers (customer_id, first_name, last_name, email, birth_date) VALUES (1, 'John', 'Doe', 'john.doe@example.com', '1990-01-01'); <\/code>\u8fd9\u5c06\u5411\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u63d2\u5165\u4e00\u6761\u65b0\u8bb0\u5f55\uff0c\u5176\u4e2d\u5305\u542b\u4e94\u4e2a\u6570\u636e\u503c\uff1acustomer_id\u4e3a1\uff0cfirst_name\u4e3a\u201cJohn\u201d\uff0clast_name\u4e3a\u201cDoe\u201d\uff0cemail\u4e3a\u201c<a href=\"mailto:john.doe@example.com\">john.doe@example.com<\/a>\u201d\uff0cbirth_date\u4e3a\u201c1990-01-01\u201d\u3002<\/li>\n\n\n\n<li>\u63d2\u5165\u591a\u6761\u6570\u636e\u3002\u53ef\u4ee5\u4f7f\u7528INSERT INTO\u8bed\u53e5\u63d2\u5165\u591a\u6761\u6570\u636e\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5411\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u63d2\u5165\u591a\u6761\u65b0\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>INSERT INTO customers (customer_id, first_name, last_name, email, birth_date) VALUES (1, 'John', 'Doe', 'john.doe@example.com', '1990-01-01'), (2, 'Jane', 'Smith', 'jane.smith@example.com', '1992-05-23'), (3, 'Mike', 'Johnson', 'mike.johnson@example.com', '1985-11-10'); <\/code>\u8fd9\u5c06\u5411\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u63d2\u5165\u4e09\u6761\u65b0\u8bb0\u5f55\uff0c\u6bcf\u6761\u8bb0\u5f55\u5305\u542b\u4e94\u4e2a\u6570\u636e\u503c\uff1acustomer_id\u3001first_name\u3001last_name\u3001email\u548cbirth_date\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u63d2\u5165\u6570\u636e\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u57fa\u672c\u64cd\u4f5c\u4e4b\u4e00\uff0c\u53ef\u4ee5\u4f7f\u7528INSERT INTO\u8bed\u53e5\u5411\u6570\u636e\u8868\u4e2d\u63d2\u5165\u65b0\u7684\u6570\u636e\u8bb0\u5f55\u3002\u5728\u6267\u884c\u63d2\u5165\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u5b9a\u8981\u63d2\u5165\u6570\u636e\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u5df2\u7ecf\u521b\u5efa\u5e76\u5177\u6709\u6b63\u786e\u7684\u5217\u5b9a\u4e49\u548c\u6570\u636e\u7ea6\u675f\u3002\u63d2\u5165\u6570\u636e\u4e4b\u540e\uff0c\u8bf7\u786e\u4fdd\u6570\u636e\u503c\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u7b26\u5408\u6570\u636e\u8868\u4e2d\u5b9a\u4e49\u7684\u5217\u6570\u636e\u7c7b\u578b\u548c\u6570\u636e\u7ea6\u675f\u6761\u4ef6\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u67e5\u8be2\u6570\u636e\uff08SELECT\uff09<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u67e5\u8be2\u6570\u636e\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u7528\u4e8e\u68c0\u7d22\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u8bb0\u5f55\u3002\u4ee5\u4e0b\u662f\u67e5\u8be2\u6570\u636e\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u786e\u5b9a\u8981\u67e5\u8be2\u7684\u6570\u636e\u8868\u3002\u5728\u6267\u884c\u67e5\u8be2\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u5b9a\u8981\u67e5\u8be2\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u5305\u542b\u9700\u8981\u67e5\u8be2\u7684\u6570\u636e\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u6784\u5efa\u67e5\u8be2\u8bed\u53e5\u3002\u4f7f\u7528SELECT\u8bed\u53e5\u53ef\u4ee5\u4ece\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u6570\u636e\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u6240\u6709\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u8fd4\u56de\u6240\u6709\u5217\u7684\u6570\u636e\u503c\u3002<\/li>\n\n\n\n<li>\u6307\u5b9a\u8981\u68c0\u7d22\u7684\u5217\u3002\u53ef\u4ee5\u4f7f\u7528SELECT\u8bed\u53e5\u7684\u5217\u5217\u8868\u6307\u5b9a\u8981\u68c0\u7d22\u7684\u5217\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u540d\u4e3a\u201cfirst_name\u201d\u548c\u201clast_name\u201d\u7684\u5217\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT first_name, last_name FROM customers; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u8fd4\u56de\u201cfirst_name\u201d\u548c\u201clast_name\u201d\u5217\u7684\u6570\u636e\u503c\u3002<\/li>\n\n\n\n<li>\u8fc7\u6ee4\u68c0\u7d22\u7ed3\u679c\u3002\u53ef\u4ee5\u4f7f\u7528WHERE\u5b50\u53e5\u8fc7\u6ee4\u68c0\u7d22\u7ed3\u679c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u4e4b\u540e\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE birth_date &gt; '1990-01-01'; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u8fd4\u56de\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u4e4b\u540e\u7684\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u6392\u5e8f\u68c0\u7d22\u7ed3\u679c\u3002\u53ef\u4ee5\u4f7f\u7528ORDER BY\u5b50\u53e5\u5bf9\u68c0\u7d22\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u51fa\u751f\u65e5\u671f\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers ORDER BY birth_date ASC; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u51fa\u751f\u65e5\u671f\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u67e5\u8be2\u6570\u636e\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u57fa\u672c\u64cd\u4f5c\u4e4b\u4e00\uff0c\u53ef\u4ee5\u4f7f\u7528SELECT\u8bed\u53e5\u4ece\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u6570\u636e\u8bb0\u5f55\uff0c\u5e76\u6307\u5b9a\u8981\u68c0\u7d22\u7684\u5217\u3001\u8fc7\u6ee4\u6761\u4ef6\u548c\u6392\u5e8f\u65b9\u5f0f\u7b49\u3002\u5728\u6267\u884c\u67e5\u8be2\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u5b9a\u8981\u67e5\u8be2\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u5305\u542b\u9700\u8981\u67e5\u8be2\u7684\u6570\u636e\u8bb0\u5f55\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u66f4\u65b0\u6570\u636e\uff08UPDATE\uff09<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u66f4\u65b0\u6570\u636e\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u7528\u4e8e\u4fee\u6539\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u8bb0\u5f55\u3002\u4ee5\u4e0b\u662f\u66f4\u65b0\u6570\u636e\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u786e\u5b9a\u8981\u66f4\u65b0\u7684\u6570\u636e\u8868\u3002\u5728\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u5b9a\u8981\u66f4\u65b0\u6570\u636e\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u5305\u542b\u9700\u8981\u66f4\u65b0\u7684\u6570\u636e\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u6784\u5efaUPDATE\u8bed\u53e5\u3002\u4f7f\u7528UPDATE\u8bed\u53e5\u53ef\u4ee5\u66f4\u65b0\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5c06\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684ID\u4e3a1\u7684\u8bb0\u5f55\u7684\u540d\u5b57\u66f4\u65b0\u4e3a\u201cJohn Doe\u201d\u7684\u793a\u4f8b\uff1asqlCopy code<code>UPDATE customers SET name = 'John Doe' WHERE id = 1; <\/code>\u8fd9\u5c06\u66f4\u65b0\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2dID\u4e3a1\u7684\u8bb0\u5f55\u7684\u540d\u5b57\u4e3a\u201cJohn Doe\u201d\u3002<\/li>\n\n\n\n<li>\u66f4\u65b0\u591a\u4e2a\u5217\u3002\u53ef\u4ee5\u4f7f\u7528UPDATE\u8bed\u53e5\u66f4\u65b0\u591a\u4e2a\u5217\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5c06\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684ID\u4e3a1\u7684\u8bb0\u5f55\u7684\u540d\u5b57\u548c\u7535\u5b50\u90ae\u4ef6\u66f4\u65b0\u7684\u793a\u4f8b\uff1asqlCopy code<code>UPDATE customers SET name = 'John Doe', email = 'john.doe@example.com' WHERE id = 1; <\/code>\u8fd9\u5c06\u66f4\u65b0\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2dID\u4e3a1\u7684\u8bb0\u5f55\u7684\u540d\u5b57\u4e3a\u201cJohn Doe\u201d\u548c\u7535\u5b50\u90ae\u4ef6\u4e3a\u201c<a href=\"mailto:john.doe@example.com\">john.doe@example.com<\/a>\u201d\u3002<\/li>\n\n\n\n<li>\u66f4\u65b0\u6240\u6709\u8bb0\u5f55\u3002\u5982\u679c\u8981\u66f4\u65b0\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u8bf7\u7701\u7565WHERE\u5b50\u53e5\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u5c06\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u7684\u72b6\u6001\u66f4\u65b0\u4e3a\u201cactive\u201d\u7684\u793a\u4f8b\uff1asqlCopy code<code>UPDATE customers SET status = 'active'; <\/code>\u8fd9\u5c06\u66f4\u65b0\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u7684\u72b6\u6001\u4e3a\u201cactive\u201d\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u66f4\u65b0\u6570\u636e\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u57fa\u672c\u64cd\u4f5c\u4e4b\u4e00\uff0c\u53ef\u4ee5\u4f7f\u7528UPDATE\u8bed\u53e5\u66f4\u65b0\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u8bb0\u5f55\u3002\u5728\u6267\u884c\u66f4\u65b0\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u5b9a\u8981\u66f4\u65b0\u6570\u636e\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u5305\u542b\u9700\u8981\u66f4\u65b0\u7684\u6570\u636e\u8bb0\u5f55\u3002\u53ef\u4ee5\u4f7f\u7528SET\u5b50\u53e5\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u5217\u548c\u65b0\u7684\u6570\u636e\u503c\uff0c\u5e76\u4f7f\u7528WHERE\u5b50\u53e5\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u8bb0\u5f55\u3002\u66f4\u65b0\u6570\u636e\u4e4b\u540e\uff0c\u8bf7\u786e\u4fdd\u66f4\u65b0\u7684\u7ed3\u679c\u7b26\u5408\u9884\u671f\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5220\u9664\u6570\u636e\uff08DELETE\uff09<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u5220\u9664\u6570\u636e\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u7528\u4e8e\u4ece\u6570\u636e\u8868\u4e2d\u5220\u9664\u4e0d\u518d\u9700\u8981\u7684\u6570\u636e\u8bb0\u5f55\u3002\u4ee5\u4e0b\u662f\u5220\u9664\u6570\u636e\u7684\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u786e\u5b9a\u8981\u5220\u9664\u7684\u6570\u636e\u8868\u3002\u5728\u6267\u884c\u5220\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u5b9a\u8981\u5220\u9664\u6570\u636e\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u5305\u542b\u9700\u8981\u5220\u9664\u7684\u6570\u636e\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u6784\u5efaDELETE\u8bed\u53e5\u3002\u4f7f\u7528DELETE\u8bed\u53e5\u53ef\u4ee5\u4ece\u6570\u636e\u8868\u4e2d\u5220\u9664\u6570\u636e\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u5220\u9664ID\u4e3a1\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>DELETE FROM customers WHERE id = 1; <\/code>\u8fd9\u5c06\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u5220\u9664ID\u4e3a1\u7684\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u5220\u9664\u6240\u6709\u8bb0\u5f55\u3002\u5982\u679c\u8981\u5220\u9664\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u8bf7\u7701\u7565WHERE\u5b50\u53e5\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u5220\u9664\u6240\u6709\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>DELETE FROM customers; <\/code>\u8fd9\u5c06\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u5220\u9664\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u5220\u9664\u6570\u636e\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u57fa\u672c\u64cd\u4f5c\u4e4b\u4e00\uff0c\u53ef\u4ee5\u4f7f\u7528DELETE\u8bed\u53e5\u4ece\u6570\u636e\u8868\u4e2d\u5220\u9664\u6570\u636e\u8bb0\u5f55\u3002\u5728\u6267\u884c\u5220\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u8bf7\u786e\u5b9a\u8981\u5220\u9664\u6570\u636e\u7684\u6570\u636e\u8868\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u5305\u542b\u9700\u8981\u5220\u9664\u7684\u6570\u636e\u8bb0\u5f55\u3002\u53ef\u4ee5\u4f7f\u7528WHERE\u5b50\u53e5\u6307\u5b9a\u8981\u5220\u9664\u7684\u8bb0\u5f55\u3002\u5220\u9664\u6570\u636e\u4e4b\u540e\uff0c\u8bf7\u786e\u4fdd\u5220\u9664\u7684\u7ed3\u679c\u7b26\u5408\u9884\u671f\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u67e5\u8be2\u6761\u4ef6\u4e0e\u6392\u5e8fWHERE\u5b50\u53e5<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0cWHERE\u5b50\u53e5\u7528\u4e8e\u5728SELECT\u3001UPDATE\u548cDELETE\u8bed\u53e5\u4e2d\u6307\u5b9a\u6761\u4ef6\u6765\u9650\u5236\u8fd4\u56de\u6216\u4fee\u6539\u7684\u884c\u3002\u4ee5\u4e0b\u662f\u67e5\u8be2\u6761\u4ef6\u548c\u6392\u5e8fWHERE\u5b50\u53e5\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u67e5\u8be2\u6761\u4ef6WHERE\u5b50\u53e5\u7528\u4e8e\u8fc7\u6ee4\u68c0\u7d22\u7ed3\u679c\uff0c\u53ea\u8fd4\u56de\u6ee1\u8db3\u6307\u5b9a\u6761\u4ef6\u7684\u6570\u636e\u8bb0\u5f55\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8fd0\u7b97\u7b26\u6765\u6307\u5b9a\u67e5\u8be2\u6761\u4ef6\uff1a<ul><li>\u7b49\u4e8e\uff1a=<\/li><li>\u4e0d\u7b49\u4e8e\uff1a&lt;&gt;<\/li><li>\u5927\u4e8e\uff1a&gt;<\/li><li>\u5927\u4e8e\u7b49\u4e8e\uff1a&gt;=<\/li><li>\u5c0f\u4e8e\uff1a&lt;<\/li><li>\u5c0f\u4e8e\u7b49\u4e8e\uff1a&lt;=<\/li><li>\u5305\u542b\uff1aIN<\/li><li>\u4e0d\u5305\u542b\uff1aNOT IN<\/li><li>\u6a21\u7cca\u5339\u914d\uff1aLIKE<\/li><li>\u4e0d\u5339\u914d\uff1aNOT LIKE<\/li><\/ul>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u4e4b\u540e\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE birth_date &gt; '1990-01-01'; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u8fd4\u56de\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u4e4b\u540e\u7684\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u6392\u5e8fWHERE\u5b50\u53e5ORDER BY\u5b50\u53e5\u7528\u4e8e\u5bf9\u68c0\u7d22\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u9009\u9879\u6765\u6307\u5b9a\u6392\u5e8f\u65b9\u5f0f\uff1a<ul><li>\u5347\u5e8f\uff1aASC<\/li><li>\u964d\u5e8f\uff1aDESC<\/li><\/ul>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u51fa\u751f\u65e5\u671f\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers ORDER BY birth_date ASC; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u51fa\u751f\u65e5\u671f\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0cWHERE\u5b50\u53e5\u7528\u4e8e\u8fc7\u6ee4\u68c0\u7d22\u7ed3\u679c\uff0c\u53ea\u8fd4\u56de\u6ee1\u8db3\u6307\u5b9a\u6761\u4ef6\u7684\u6570\u636e\u8bb0\u5f55\u3002\u53ef\u4ee5\u4f7f\u7528\u8fd0\u7b97\u7b26\u6765\u6307\u5b9a\u67e5\u8be2\u6761\u4ef6\u3002ORDER BY\u5b50\u53e5\u7528\u4e8e\u5bf9\u68c0\u7d22\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528ASC\u548cDESC\u9009\u9879\u6765\u6307\u5b9a\u6392\u5e8f\u65b9\u5f0f\u3002\u5728\u4f7f\u7528WHERE\u5b50\u53e5\u548cORDER BY\u5b50\u53e5\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u7684\u6761\u4ef6\u548c\u9009\u9879\u6b63\u786e\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u7b5b\u9009\u548c\u6392\u5e8f\u6570\u636e\u8bb0\u5f55\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u67e5\u8be2\u6761\u4ef6\u4e0e\u6392\u5e8fAND\u548cOR\u64cd\u4f5c\u7b26<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0cAND\u548cOR\u64cd\u4f5c\u7b26\u7528\u4e8e\u5c06\u591a\u4e2a\u67e5\u8be2\u6761\u4ef6\u7ec4\u5408\u8d77\u6765\uff0c\u4ee5\u6307\u5b9a\u66f4\u590d\u6742\u7684\u67e5\u8be2\u6761\u4ef6\u3002\u4ee5\u4e0b\u662fAND\u548cOR\u64cd\u4f5c\u7b26\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>AND\u64cd\u4f5c\u7b26AND\u64cd\u4f5c\u7b26\u7528\u4e8e\u5c06\u591a\u4e2a\u67e5\u8be2\u6761\u4ef6\u7ec4\u5408\u8d77\u6765\uff0c\u5e76\u8981\u6c42\u6240\u6709\u6761\u4ef6\u90fd\u6ee1\u8db3\uff0c\u624d\u4f1a\u8fd4\u56de\u6570\u636e\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u540d\u5b57\u4e3a\u201cJohn\u201d\u4e14\u72b6\u6001\u4e3a\u201cactive\u201d\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE name = 'John' AND status = 'active'; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u540d\u5b57\u4e3a\u201cJohn\u201d\u4e14\u72b6\u6001\u4e3a\u201cactive\u201d\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>OR\u64cd\u4f5c\u7b26OR\u64cd\u4f5c\u7b26\u7528\u4e8e\u5c06\u591a\u4e2a\u67e5\u8be2\u6761\u4ef6\u7ec4\u5408\u8d77\u6765\uff0c\u5e76\u8981\u6c42\u81f3\u5c11\u6709\u4e00\u4e2a\u6761\u4ef6\u6ee1\u8db3\uff0c\u624d\u4f1a\u8fd4\u56de\u6570\u636e\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u540d\u5b57\u4e3a\u201cJohn\u201d\u6216\u72b6\u6001\u4e3a\u201cactive\u201d\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE name = 'John' OR status = 'active'; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u540d\u5b57\u4e3a\u201cJohn\u201d\u6216\u72b6\u6001\u4e3a\u201cactive\u201d\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u7ec4\u5408\u4f7f\u7528AND\u548cOR\u64cd\u4f5c\u7b26\u53ef\u4ee5\u7ec4\u5408\u4f7f\u7528\uff0c\u4ee5\u521b\u5efa\u66f4\u590d\u6742\u7684\u67e5\u8be2\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u540d\u5b57\u4e3a\u201cJohn\u201d\u6216\u72b6\u6001\u4e3a\u201cactive\u201d\u4e14\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u4e4b\u540e\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE (name = 'John' OR status = 'active') AND birth_date &gt; '1990-01-01'; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u540d\u5b57\u4e3a\u201cJohn\u201d\u6216\u72b6\u6001\u4e3a\u201cactive\u201d\uff0c\u4e14\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u4e4b\u540e\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0cAND\u548cOR\u64cd\u4f5c\u7b26\u7528\u4e8e\u5c06\u591a\u4e2a\u67e5\u8be2\u6761\u4ef6\u7ec4\u5408\u8d77\u6765\uff0c\u4ee5\u6307\u5b9a\u66f4\u590d\u6742\u7684\u67e5\u8be2\u6761\u4ef6\u3002AND\u8981\u6c42\u6240\u6709\u6761\u4ef6\u90fd\u6ee1\u8db3\uff0cOR\u8981\u6c42\u81f3\u5c11\u6709\u4e00\u4e2a\u6761\u4ef6\u6ee1\u8db3\u3002\u5728\u4f7f\u7528AND\u548cOR\u64cd\u4f5c\u7b26\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u7684\u6761\u4ef6\u6b63\u786e\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u7b5b\u9009\u6570\u636e\u8bb0\u5f55\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u67e5\u8be2\u6761\u4ef6\u4e0e\u6392\u5e8fIN\u548cBETWEEN\u64cd\u4f5c\u7b26<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0cIN\u548cBETWEEN\u64cd\u4f5c\u7b26\u7528\u4e8e\u6307\u5b9a\u67e5\u8be2\u6761\u4ef6\uff0c\u4ee5\u68c0\u7d22\u7279\u5b9a\u503c\u8303\u56f4\u5185\u7684\u6570\u636e\u8bb0\u5f55\u3002\u4ee5\u4e0b\u662fIN\u548cBETWEEN\u64cd\u4f5c\u7b26\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>IN\u64cd\u4f5c\u7b26IN\u64cd\u4f5c\u7b26\u7528\u4e8e\u6307\u5b9a\u4e00\u4e2a\u503c\u5217\u8868\uff0c\u4ee5\u68c0\u7d22\u5339\u914d\u5217\u8868\u4e2d\u4efb\u4f55\u4e00\u4e2a\u503c\u7684\u6570\u636e\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u540d\u5b57\u4e3a\u201cJohn\u201d\u6216\u201cJane\u201d\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE name IN ('John', 'Jane'); <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u540d\u5b57\u4e3a\u201cJohn\u201d\u6216\u201cJane\u201d\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>BETWEEN\u64cd\u4f5c\u7b26BETWEEN\u64cd\u4f5c\u7b26\u7528\u4e8e\u6307\u5b9a\u4e00\u4e2a\u503c\u8303\u56f4\uff0c\u4ee5\u68c0\u7d22\u8303\u56f4\u5185\u7684\u6570\u636e\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u548c\u201c2000-01-01\u201d\u4e4b\u95f4\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE birth_date BETWEEN '1990-01-01' AND '2000-01-01'; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u548c\u201c2000-01-01\u201d\u4e4b\u95f4\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u7ec4\u5408\u4f7f\u7528IN\u548cBETWEEN\u64cd\u4f5c\u7b26\u53ef\u4ee5\u7ec4\u5408\u4f7f\u7528\uff0c\u4ee5\u521b\u5efa\u66f4\u590d\u6742\u7684\u67e5\u8be2\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u540d\u5b57\u4e3a\u201cJohn\u201d\u6216\u201cJane\u201d\uff0c\u4e14\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u548c\u201c2000-01-01\u201d\u4e4b\u95f4\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE name IN ('John', 'Jane') AND birth_date BETWEEN '1990-01-01' AND '2000-01-01'; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u540d\u5b57\u4e3a\u201cJohn\u201d\u6216\u201cJane\u201d\uff0c\u4e14\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u548c\u201c2000-01-01\u201d\u4e4b\u95f4\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0cIN\u548cBETWEEN\u64cd\u4f5c\u7b26\u7528\u4e8e\u6307\u5b9a\u67e5\u8be2\u6761\u4ef6\uff0c\u4ee5\u68c0\u7d22\u7279\u5b9a\u503c\u5217\u8868\u6216\u8303\u56f4\u5185\u7684\u6570\u636e\u8bb0\u5f55\u3002IN\u8981\u6c42\u5339\u914d\u5217\u8868\u4e2d\u4efb\u4f55\u4e00\u4e2a\u503c\uff0cBETWEEN\u8981\u6c42\u5339\u914d\u8303\u56f4\u5185\u7684\u503c\u3002\u5728\u4f7f\u7528IN\u548cBETWEEN\u64cd\u4f5c\u7b26\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u7684\u6761\u4ef6\u6b63\u786e\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u7b5b\u9009\u6570\u636e\u8bb0\u5f55\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u67e5\u8be2\u6761\u4ef6\u4e0e\u6392\u5e8fLIKE\u548cILIKE\u64cd\u4f5c\u7b26<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0cLIKE\u548cILIKE\u64cd\u4f5c\u7b26\u7528\u4e8e\u6a21\u7cca\u5339\u914d\u5b57\u7b26\u4e32\uff0c\u5e76\u6307\u5b9a\u67e5\u8be2\u6761\u4ef6\uff0c\u4ee5\u68c0\u7d22\u7b26\u5408\u6a21\u5f0f\u7684\u6570\u636e\u8bb0\u5f55\u3002\u4ee5\u4e0b\u662fLIKE\u548cILIKE\u64cd\u4f5c\u7b26\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>LIKE\u64cd\u4f5c\u7b26LIKE\u64cd\u4f5c\u7b26\u7528\u4e8e\u6a21\u7cca\u5339\u914d\u5b57\u7b26\u4e32\uff0c\u5e76\u68c0\u7d22\u5339\u914d\u6307\u5b9a\u6a21\u5f0f\u7684\u6570\u636e\u8bb0\u5f55\u3002\u53ef\u4ee5\u5728\u6a21\u5f0f\u4e2d\u4f7f\u7528\u4ee5\u4e0b\u901a\u914d\u7b26\uff1a<ul><li>%\uff1a\u8868\u793a\u4efb\u610f\u5b57\u7b26\u5e8f\u5217<\/li><li>_\uff1a\u8868\u793a\u4efb\u610f\u5355\u4e2a\u5b57\u7b26<\/li><\/ul>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u540d\u5b57\u4ee5\u201cJ\u201d\u5f00\u5934\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE name LIKE 'J%'; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u540d\u5b57\u4ee5\u201cJ\u201d\u5f00\u5934\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>ILIKE\u64cd\u4f5c\u7b26ILIKE\u64cd\u4f5c\u7b26\u4e0eLIKE\u64cd\u4f5c\u7b26\u7c7b\u4f3c\uff0c\u4f46\u662f\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u540d\u5b57\u4e2d\u5305\u542b\u201cjohn\u201d\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE name ILIKE '%john%'; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u540d\u5b57\u4e2d\u5305\u542b\u201cjohn\u201d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002<\/li>\n\n\n\n<li>\u7ec4\u5408\u4f7f\u7528LIKE\u548cILIKE\u64cd\u4f5c\u7b26\u53ef\u4ee5\u4e0e\u5176\u4ed6\u64cd\u4f5c\u7b26\u7ec4\u5408\u4f7f\u7528\uff0c\u4ee5\u521b\u5efa\u66f4\u590d\u6742\u7684\u67e5\u8be2\u6761\u4ef6\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u540d\u5b57\u4ee5\u201cJ\u201d\u5f00\u5934\uff0c\u4e14\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u548c\u201c2000-01-01\u201d\u4e4b\u95f4\u7684\u8bb0\u5f55\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE name LIKE 'J%' AND birth_date BETWEEN '1990-01-01' AND '2000-01-01'; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u540d\u5b57\u4ee5\u201cJ\u201d\u5f00\u5934\uff0c\u4e14\u51fa\u751f\u65e5\u671f\u5728\u201c1990-01-01\u201d\u548c\u201c2000-01-01\u201d\u4e4b\u95f4\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0cLIKE\u548cILIKE\u64cd\u4f5c\u7b26\u7528\u4e8e\u6a21\u7cca\u5339\u914d\u5b57\u7b26\u4e32\uff0c\u5e76\u6307\u5b9a\u67e5\u8be2\u6761\u4ef6\uff0c\u4ee5\u68c0\u7d22\u7b26\u5408\u6a21\u5f0f\u7684\u6570\u636e\u8bb0\u5f55\u3002LIKE\u7528\u4e8e\u533a\u5206\u5927\u5c0f\u5199\uff0cILIKE\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002\u5728\u4f7f\u7528LIKE\u548cILIKE\u64cd\u4f5c\u7b26\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u7684\u6a21\u5f0f\u6b63\u786e\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u7b5b\u9009\u6570\u636e\u8bb0\u5f55\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u67e5\u8be2\u6761\u4ef6\u4e0e\u6392\u5e8fORDER BY\u5b50\u53e5<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0cORDER BY\u5b50\u53e5\u7528\u4e8e\u5bf9\u68c0\u7d22\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\u3002\u53ef\u4ee5\u6309\u7167\u4e00\u4e2a\u6216\u591a\u4e2a\u5217\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u4e14\u53ef\u4ee5\u6307\u5b9a\u5347\u5e8f\u6216\u964d\u5e8f\u3002\u4ee5\u4e0b\u662fORDER BY\u5b50\u53e5\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6309\u5355\u4e2a\u5217\u6392\u5e8f\u53ef\u4ee5\u6309\u7167\u4e00\u4e2a\u5217\u8fdb\u884c\u6392\u5e8f\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u540d\u6216\u5217\u7684\u522b\u540d\u6765\u6307\u5b9a\u8981\u6392\u5e8f\u7684\u5217\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u51fa\u751f\u65e5\u671f\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers ORDER BY birth_date ASC; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u51fa\u751f\u65e5\u671f\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\u3002<\/li>\n\n\n\n<li>\u6309\u591a\u4e2a\u5217\u6392\u5e8f\u53ef\u4ee5\u6309\u7167\u591a\u4e2a\u5217\u8fdb\u884c\u6392\u5e8f\uff0c\u53ef\u4ee5\u5728ORDER BY\u5b50\u53e5\u4e2d\u4f7f\u7528\u9017\u53f7\u5206\u9694\u7684\u5217\u5217\u8868\u6765\u6307\u5b9a\u591a\u4e2a\u5217\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u72b6\u6001\u548c\u51fa\u751f\u65e5\u671f\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers ORDER BY status ASC, birth_date ASC; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u72b6\u6001\u548c\u51fa\u751f\u65e5\u671f\u8fdb\u884c\u5347\u5e8f\u6392\u5e8f\u3002<\/li>\n\n\n\n<li>\u6307\u5b9a\u6392\u5e8f\u987a\u5e8f\u53ef\u4ee5\u4f7f\u7528ASC\u548cDESC\u5173\u952e\u5b57\u6765\u6307\u5b9a\u5347\u5e8f\u6216\u964d\u5e8f\u6392\u5e8f\u987a\u5e8f\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u68c0\u7d22\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u51fa\u751f\u65e5\u671f\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers ORDER BY birth_date DESC; <\/code>\u8fd9\u5c06\u68c0\u7d22\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u5e76\u6309\u51fa\u751f\u65e5\u671f\u8fdb\u884c\u964d\u5e8f\u6392\u5e8f\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0cORDER BY\u5b50\u53e5\u7528\u4e8e\u5bf9\u68c0\u7d22\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\u3002\u53ef\u4ee5\u6309\u7167\u4e00\u4e2a\u6216\u591a\u4e2a\u5217\u8fdb\u884c\u6392\u5e8f\uff0c\u5e76\u4e14\u53ef\u4ee5\u6307\u5b9a\u5347\u5e8f\u6216\u964d\u5e8f\u3002\u5728\u4f7f\u7528ORDER BY\u5b50\u53e5\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u7684\u5217\u548c\u6392\u5e8f\u987a\u5e8f\u6b63\u786e\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u5bf9\u68c0\u7d22\u7ed3\u679c\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u805a\u5408\u51fd\u6570\uff08COUNT\u3001SUM\u3001AVG\u3001MIN\u3001MAX\uff09<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u805a\u5408\u51fd\u6570\u7528\u4e8e\u5bf9\u6570\u636e\u8fdb\u884c\u7edf\u8ba1\u548c\u6c47\u603b\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u8ba1\u7b97\u7ed3\u679c\u3002\u5e38\u7528\u7684\u805a\u5408\u51fd\u6570\u5305\u62ecCOUNT\u3001SUM\u3001AVG\u3001MIN\u548cMAX\u3002\u4ee5\u4e0b\u662f\u805a\u5408\u51fd\u6570\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>COUNT\u51fd\u6570COUNT\u51fd\u6570\u7528\u4e8e\u8ba1\u7b97\u6ee1\u8db3\u6307\u5b9a\u6761\u4ef6\u7684\u8bb0\u5f55\u6570\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u8ba1\u7b97\u72b6\u6001\u4e3a\u201cactive\u201d\u7684\u8bb0\u5f55\u6570\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT COUNT(*) FROM customers WHERE status = 'active'; <\/code>\u8fd9\u5c06\u8ba1\u7b97\u540d\u4e3a\u201ccustomers\u201d\u7684\u6570\u636e\u8868\u4e2d\u72b6\u6001\u4e3a\u201cactive\u201d\u7684\u8bb0\u5f55\u6570\u3002<\/li>\n\n\n\n<li>SUM\u51fd\u6570SUM\u51fd\u6570\u7528\u4e8e\u8ba1\u7b97\u6307\u5b9a\u5217\u7684\u6570\u503c\u603b\u548c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u8ba1\u7b97\u6240\u6709\u8ba2\u5355\u7684\u603b\u91d1\u989d\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT SUM(amount) FROM orders; <\/code>\u8fd9\u5c06\u8ba1\u7b97\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u6240\u6709\u8ba2\u5355\u7684\u603b\u91d1\u989d\u3002<\/li>\n\n\n\n<li>AVG\u51fd\u6570AVG\u51fd\u6570\u7528\u4e8e\u8ba1\u7b97\u6307\u5b9a\u5217\u7684\u6570\u503c\u5e73\u5747\u503c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u8ba1\u7b97\u6240\u6709\u8ba2\u5355\u7684\u5e73\u5747\u91d1\u989d\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT AVG(amount) FROM orders; <\/code>\u8fd9\u5c06\u8ba1\u7b97\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u6240\u6709\u8ba2\u5355\u7684\u5e73\u5747\u91d1\u989d\u3002<\/li>\n\n\n\n<li>MIN\u51fd\u6570MIN\u51fd\u6570\u7528\u4e8e\u627e\u5230\u6307\u5b9a\u5217\u7684\u6700\u5c0f\u503c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201cproducts\u201d\u7684\u6570\u636e\u8868\u4e2d\u627e\u5230\u4ef7\u683c\u6700\u4f4e\u7684\u4ea7\u54c1\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT MIN(price) FROM products; <\/code>\u8fd9\u5c06\u627e\u5230\u540d\u4e3a\u201cproducts\u201d\u7684\u6570\u636e\u8868\u4e2d\u4ef7\u683c\u6700\u4f4e\u7684\u4ea7\u54c1\u3002<\/li>\n\n\n\n<li>MAX\u51fd\u6570MAX\u51fd\u6570\u7528\u4e8e\u627e\u5230\u6307\u5b9a\u5217\u7684\u6700\u5927\u503c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201cproducts\u201d\u7684\u6570\u636e\u8868\u4e2d\u627e\u5230\u4ef7\u683c\u6700\u9ad8\u7684\u4ea7\u54c1\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT MAX(price) FROM products; <\/code>\u8fd9\u5c06\u627e\u5230\u540d\u4e3a\u201cproducts\u201d\u7684\u6570\u636e\u8868\u4e2d\u4ef7\u683c\u6700\u9ad8\u7684\u4ea7\u54c1\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u805a\u5408\u51fd\u6570\u7528\u4e8e\u5bf9\u6570\u636e\u8fdb\u884c\u7edf\u8ba1\u548c\u6c47\u603b\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u8ba1\u7b97\u7ed3\u679c\u3002\u5e38\u7528\u7684\u805a\u5408\u51fd\u6570\u5305\u62ecCOUNT\u3001SUM\u3001AVG\u3001MIN\u548cMAX\u3002\u5728\u4f7f\u7528\u805a\u5408\u51fd\u6570\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u7684\u6761\u4ef6\u548c\u5217\u6b63\u786e\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u8ba1\u7b97\u51fa\u6240\u9700\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91caGROUP BY\u5b50\u53e5<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0cGROUP BY\u5b50\u53e5\u7528\u4e8e\u5bf9\u6570\u636e\u8fdb\u884c\u5206\u7ec4\uff0c\u5e76\u5728\u6bcf\u4e2a\u5206\u7ec4\u5185\u8ba1\u7b97\u805a\u5408\u51fd\u6570\u7684\u503c\u3002\u53ef\u4ee5\u6309\u7167\u4e00\u4e2a\u6216\u591a\u4e2a\u5217\u8fdb\u884c\u5206\u7ec4\uff0c\u5e76\u5728\u6bcf\u4e2a\u5206\u7ec4\u5185\u8ba1\u7b97\u805a\u5408\u51fd\u6570\u7684\u503c\uff0c\u5982COUNT\u3001SUM\u3001AVG\u3001MIN\u548cMAX\u7b49\u3002\u4ee5\u4e0b\u662fGROUP BY\u5b50\u53e5\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6309\u5355\u4e2a\u5217\u5206\u7ec4\u53ef\u4ee5\u6309\u7167\u4e00\u4e2a\u5217\u8fdb\u884c\u5206\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u540d\u6216\u5217\u7684\u522b\u540d\u6765\u6307\u5b9a\u8981\u5206\u7ec4\u7684\u5217\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u6309\u5ba2\u6237ID\u5206\u7ec4\uff0c\u5e76\u8ba1\u7b97\u6bcf\u4e2a\u5ba2\u6237ID\u7684\u8ba2\u5355\u6570\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT customer_id, COUNT(*) FROM orders GROUP BY customer_id; <\/code>\u8fd9\u5c06\u4ece\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u6309\u5ba2\u6237ID\u5206\u7ec4\uff0c\u5e76\u8ba1\u7b97\u6bcf\u4e2a\u5ba2\u6237ID\u7684\u8ba2\u5355\u6570\u3002<\/li>\n\n\n\n<li>\u6309\u591a\u4e2a\u5217\u5206\u7ec4\u53ef\u4ee5\u6309\u7167\u591a\u4e2a\u5217\u8fdb\u884c\u5206\u7ec4\uff0c\u53ef\u4ee5\u5728GROUP BY\u5b50\u53e5\u4e2d\u4f7f\u7528\u9017\u53f7\u5206\u9694\u7684\u5217\u5217\u8868\u6765\u6307\u5b9a\u591a\u4e2a\u5217\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u6309\u5ba2\u6237ID\u548c\u8ba2\u5355\u72b6\u6001\u5206\u7ec4\uff0c\u5e76\u8ba1\u7b97\u6bcf\u4e2a\u5ba2\u6237ID\u548c\u8ba2\u5355\u72b6\u6001\u7684\u8ba2\u5355\u6570\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT customer_id, status, COUNT(*) FROM orders GROUP BY customer_id, status; <\/code>\u8fd9\u5c06\u4ece\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u6309\u5ba2\u6237ID\u548c\u8ba2\u5355\u72b6\u6001\u5206\u7ec4\uff0c\u5e76\u8ba1\u7b97\u6bcf\u4e2a\u5ba2\u6237ID\u548c\u8ba2\u5355\u72b6\u6001\u7684\u8ba2\u5355\u6570\u3002<\/li>\n\n\n\n<li>\u8fc7\u6ee4\u5206\u7ec4\u7ed3\u679c\u53ef\u4ee5\u5728HAVING\u5b50\u53e5\u4e2d\u6307\u5b9a\u6761\u4ef6\u6765\u8fc7\u6ee4\u5206\u7ec4\u7ed3\u679c\u3002HAVING\u5b50\u53e5\u7c7b\u4f3c\u4e8eWHERE\u5b50\u53e5\uff0c\u4f46\u662f\u5b83\u7528\u4e8e\u8fc7\u6ee4\u5206\u7ec4\u7ed3\u679c\uff0c\u800c\u4e0d\u662f\u5355\u4e2a\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u6309\u5ba2\u6237ID\u5206\u7ec4\uff0c\u5e76\u53ea\u663e\u793a\u8ba2\u5355\u6570\u5927\u4e8e\u7b49\u4e8e5\u7684\u5ba2\u6237\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT customer_id, COUNT(*) FROM orders GROUP BY customer_id HAVING COUNT(*) &gt;= 5; <\/code>\u8fd9\u5c06\u4ece\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u6309\u5ba2\u6237ID\u5206\u7ec4\uff0c\u5e76\u53ea\u663e\u793a\u8ba2\u5355\u6570\u5927\u4e8e\u7b49\u4e8e5\u7684\u5ba2\u6237\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0cGROUP BY\u5b50\u53e5\u7528\u4e8e\u5bf9\u6570\u636e\u8fdb\u884c\u5206\u7ec4\uff0c\u5e76\u5728\u6bcf\u4e2a\u5206\u7ec4\u5185\u8ba1\u7b97\u805a\u5408\u51fd\u6570\u7684\u503c\u3002\u53ef\u4ee5\u6309\u7167\u4e00\u4e2a\u6216\u591a\u4e2a\u5217\u8fdb\u884c\u5206\u7ec4\uff0c\u5e76\u5728\u6bcf\u4e2a\u5206\u7ec4\u5185\u8ba1\u7b97\u805a\u5408\u51fd\u6570\u7684\u503c\uff0c\u5982COUNT\u3001SUM\u3001AVG\u3001MIN\u548cMAX\u7b49\u3002\u5728\u4f7f\u7528GROUP BY\u5b50\u53e5\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u7684\u5206\u7ec4\u5217\u548c\u805a\u5408\u51fd\u6570\u6b63\u786e\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u8ba1\u7b97\u51fa\u6240\u9700\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91caHAVING\u5b50\u53e5<\/p>\n\n\n\n<p>HAVING\u5b50\u53e5\u662f\u7528\u4e8e\u5728GROUP BY\u5b50\u53e5\u4e2d\u8fdb\u884c\u6761\u4ef6\u7b5b\u9009\u7684\u5b50\u53e5\u3002\u5b83\u4e0eWHERE\u5b50\u53e5\u7684\u4f5c\u7528\u7c7b\u4f3c\uff0c\u4f46\u662fWHERE\u5b50\u53e5\u7528\u4e8e\u7b5b\u9009\u884c\uff0c\u800cHAVING\u5b50\u53e5\u7528\u4e8e\u7b5b\u9009\u5206\u7ec4\u540e\u7684\u7ed3\u679c\u3002HAVING\u5b50\u53e5\u662f\u5728GROUP BY\u5b50\u53e5\u6267\u884c\u540e\uff0c\u805a\u5408\u51fd\u6570\u8ba1\u7b97\u524d\u7b5b\u9009\u7684\uff0c\u56e0\u6b64\u53ea\u80fd\u5305\u542b\u5728SELECT\u8bed\u53e5\u4e2d\u5305\u542b\u805a\u5408\u51fd\u6570\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662fHAVING\u5b50\u53e5\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bed\u6cd5HAVING\u5b50\u53e5\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>SELECT column1, column2, ... columnN, aggregate_function(column) FROM table WHERE [condition] GROUP BY column1, column2, ... columnN HAVING [condition];<\/code><\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u4ee5\u4e0b\u662f\u4ece\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u6309\u5ba2\u6237ID\u5206\u7ec4\uff0c\u5e76\u53ea\u663e\u793a\u8ba2\u5355\u6570\u5927\u4e8e\u7b49\u4e8e5\u7684\u5ba2\u6237\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT customer_id, COUNT(*) FROM orders GROUP BY customer_id HAVING COUNT(*) &gt;= 5; <\/code>\u8fd9\u5c06\u4ece\u540d\u4e3a\u201corders\u201d\u7684\u6570\u636e\u8868\u4e2d\u6309\u5ba2\u6237ID\u5206\u7ec4\uff0c\u5e76\u53ea\u663e\u793a\u8ba2\u5355\u6570\u5927\u4e8e\u7b49\u4e8e5\u7684\u5ba2\u6237\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0cHAVING\u5b50\u53e5\u662f\u7528\u4e8e\u5728GROUP BY\u5b50\u53e5\u4e2d\u8fdb\u884c\u6761\u4ef6\u7b5b\u9009\u7684\u5b50\u53e5\u3002\u5b83\u4e0eWHERE\u5b50\u53e5\u7684\u4f5c\u7528\u7c7b\u4f3c\uff0c\u4f46\u662fWHERE\u5b50\u53e5\u7528\u4e8e\u7b5b\u9009\u884c\uff0c\u800cHAVING\u5b50\u53e5\u7528\u4e8e\u7b5b\u9009\u5206\u7ec4\u540e\u7684\u7ed3\u679c\u3002\u5728\u4f7f\u7528HAVING\u5b50\u53e5\u65f6\uff0c\u8bf7\u786e\u4fdd\u5728GROUP BY\u5b50\u53e5\u4e2d\u6307\u5b9a\u6b63\u786e\u7684\u5206\u7ec4\u5217\u548c\u805a\u5408\u51fd\u6570\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u7b5b\u9009\u5206\u7ec4\u540e\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5185\u8fde\u63a5\uff08INNER JOIN\uff09<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u5185\u8fde\u63a5\uff08INNER JOIN\uff09\u662f\u4e00\u79cd\u5c06\u4e24\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u7684\u884c\u6309\u7167\u5171\u540c\u7684\u503c\u8fdb\u884c\u5339\u914d\u7684\u64cd\u4f5c\u3002\u5185\u8fde\u63a5\u8fd4\u56de\u90a3\u4e9b\u5728\u4e24\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u90fd\u5b58\u5728\u7684\u884c\uff0c\u56e0\u6b64\uff0c\u53ea\u6709\u5728\u7b2c\u4e00\u4e2a\u8868\u548c\u7b2c\u4e8c\u4e2a\u8868\u4e4b\u95f4\u5b58\u5728\u5339\u914d\u5173\u7cfb\u65f6\uff0c\u624d\u4f1a\u8fd4\u56de\u8fd9\u4e9b\u884c\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662fINNER JOIN\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bed\u6cd5INNER JOIN\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>SELECT table1.column1, table2.column2... FROM table1 INNER JOIN table2 ON table1.matching_column = table2.matching_column; <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0ctable1\u548ctable2\u662f\u8981\u8fdb\u884c\u8fde\u63a5\u7684\u4e24\u4e2a\u8868\uff0cmatching_column\u662f\u7528\u4e8e\u5339\u914d\u7684\u5217\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u8868\uff1acustomers\u548corders\u3002customers\u8868\u5305\u542b\u5ba2\u6237\u4fe1\u606f\uff0corders\u8868\u5305\u542b\u8ba2\u5355\u4fe1\u606f\u3002\u8981\u627e\u5230\u6bcf\u4e2a\u5ba2\u6237\u7684\u6240\u6709\u8ba2\u5355\uff0c\u53ef\u4ee5\u4f7f\u7528INNER JOIN\u3002\u4ee5\u4e0b\u662fINNER JOIN\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT customers.customer_id, customers.first_name, customers.last_name, orders.order_id, orders.order_date FROM customers INNER JOIN orders ON customers.customer_id = orders.customer_id; <\/code>\u8fd9\u5c06\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u96c6\uff0c\u5176\u4e2d\u5305\u542b\u5ba2\u6237ID\u3001\u540d\u5b57\u3001\u59d3\u6c0f\u3001\u8ba2\u5355ID\u548c\u8ba2\u5355\u65e5\u671f\u3002\u7ed3\u679c\u96c6\u53ea\u5305\u62ec\u5728customers\u8868\u548corders\u8868\u4e2d\u90fd\u5b58\u5728\u7684\u884c\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u5185\u8fde\u63a5\u662f\u4e00\u79cd\u5c06\u4e24\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u7684\u884c\u6309\u7167\u5171\u540c\u7684\u503c\u8fdb\u884c\u5339\u914d\u7684\u64cd\u4f5c\u3002\u5b83\u8fd4\u56de\u90a3\u4e9b\u5728\u4e24\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u90fd\u5b58\u5728\u7684\u884c\u3002\u5728\u4f7f\u7528INNER JOIN\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u6b63\u786e\u7684\u8868\u548c\u5339\u914d\u5217\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u8fdb\u884c\u5339\u914d\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5de6\u8fde\u63a5\uff08LEFT JOIN\uff09<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u5de6\u8fde\u63a5\uff08LEFT JOIN\uff09\u662f\u4e00\u79cd\u5c06\u4e24\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u7684\u884c\u6309\u7167\u5171\u540c\u7684\u503c\u8fdb\u884c\u5339\u914d\u7684\u64cd\u4f5c\u3002\u4e0e\u5185\u8fde\u63a5\u4e0d\u540c\uff0c\u5de6\u8fde\u63a5\u8fd4\u56de\u5de6\u8868\uff08\u5373\u7b2c\u4e00\u4e2a\u8868\uff09\u4e2d\u6240\u6709\u7684\u884c\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u5728\u7b2c\u4e8c\u4e2a\u8868\u4e2d\u6709\u5339\u914d\u7684\u884c\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662fLEFT JOIN\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bed\u6cd5LEFT JOIN\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>SELECT table1.column1, table2.column2... FROM table1 LEFT JOIN table2 ON table1.matching_column = table2.matching_column; <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0ctable1\u548ctable2\u662f\u8981\u8fdb\u884c\u8fde\u63a5\u7684\u4e24\u4e2a\u8868\uff0cmatching_column\u662f\u7528\u4e8e\u5339\u914d\u7684\u5217\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u8868\uff1acustomers\u548corders\u3002customers\u8868\u5305\u542b\u5ba2\u6237\u4fe1\u606f\uff0corders\u8868\u5305\u542b\u8ba2\u5355\u4fe1\u606f\u3002\u8981\u627e\u5230\u6bcf\u4e2a\u5ba2\u6237\u53ca\u5176\u6240\u6709\u8ba2\u5355\uff0c\u5305\u62ec\u90a3\u4e9b\u6ca1\u6709\u8ba2\u5355\u7684\u5ba2\u6237\uff0c\u53ef\u4ee5\u4f7f\u7528LEFT JOIN\u3002\u4ee5\u4e0b\u662fLEFT JOIN\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT customers.customer_id, customers.first_name, customers.last_name, orders.order_id, orders.order_date FROM customers LEFT JOIN orders ON customers.customer_id = orders.customer_id; <\/code>\u8fd9\u5c06\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u96c6\uff0c\u5176\u4e2d\u5305\u542b\u5ba2\u6237ID\u3001\u540d\u5b57\u3001\u59d3\u6c0f\u3001\u8ba2\u5355ID\u548c\u8ba2\u5355\u65e5\u671f\u3002\u7ed3\u679c\u96c6\u5305\u62ec\u5728customers\u8868\u4e2d\u6240\u6709\u7684\u884c\uff0c\u4ee5\u53ca\u5728orders\u8868\u4e2d\u4e0e\u4e4b\u5339\u914d\u7684\u884c\u3002\u5982\u679c\u67d0\u4e2a\u5ba2\u6237\u5728orders\u8868\u4e2d\u6ca1\u6709\u4efb\u4f55\u5339\u914d\u7684\u884c\uff0c\u5219\u8be5\u5ba2\u6237\u7684\u8ba2\u5355ID\u548c\u8ba2\u5355\u65e5\u671f\u5b57\u6bb5\u5c06\u8fd4\u56deNULL\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u5de6\u8fde\u63a5\u662f\u4e00\u79cd\u5c06\u4e24\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u7684\u884c\u6309\u7167\u5171\u540c\u7684\u503c\u8fdb\u884c\u5339\u914d\u7684\u64cd\u4f5c\u3002\u5b83\u8fd4\u56de\u5de6\u8868\uff08\u5373\u7b2c\u4e00\u4e2a\u8868\uff09\u4e2d\u6240\u6709\u7684\u884c\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u5728\u7b2c\u4e8c\u4e2a\u8868\u4e2d\u6709\u5339\u914d\u7684\u884c\u3002\u5728\u4f7f\u7528LEFT JOIN\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u6b63\u786e\u7684\u8868\u548c\u5339\u914d\u5217\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u8fdb\u884c\u5339\u914d\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u53f3\u8fde\u63a5\uff08RIGHT JOIN\uff09<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u53f3\u8fde\u63a5\uff08RIGHT JOIN\uff09\u662f\u4e00\u79cd\u5c06\u4e24\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u7684\u884c\u6309\u7167\u5171\u540c\u7684\u503c\u8fdb\u884c\u5339\u914d\u7684\u64cd\u4f5c\u3002\u4e0e\u5de6\u8fde\u63a5\u4e0d\u540c\uff0c\u53f3\u8fde\u63a5\u8fd4\u56de\u53f3\u8868\uff08\u5373\u7b2c\u4e8c\u4e2a\u8868\uff09\u4e2d\u6240\u6709\u7684\u884c\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u5728\u7b2c\u4e00\u4e2a\u8868\u4e2d\u6709\u5339\u914d\u7684\u884c\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662fRIGHT JOIN\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bed\u6cd5RIGHT JOIN\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>SELECT table1.column1, table2.column2... FROM table1 RIGHT JOIN table2 ON table1.matching_column = table2.matching_column; <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0ctable1\u548ctable2\u662f\u8981\u8fdb\u884c\u8fde\u63a5\u7684\u4e24\u4e2a\u8868\uff0cmatching_column\u662f\u7528\u4e8e\u5339\u914d\u7684\u5217\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u8868\uff1acustomers\u548corders\u3002customers\u8868\u5305\u542b\u5ba2\u6237\u4fe1\u606f\uff0corders\u8868\u5305\u542b\u8ba2\u5355\u4fe1\u606f\u3002\u8981\u627e\u5230\u6bcf\u4e2a\u8ba2\u5355\u53ca\u5176\u5bf9\u5e94\u7684\u5ba2\u6237\u4fe1\u606f\uff0c\u5305\u62ec\u90a3\u4e9b\u6ca1\u6709\u5ba2\u6237\u4fe1\u606f\u7684\u8ba2\u5355\uff0c\u53ef\u4ee5\u4f7f\u7528RIGHT JOIN\u3002\u4ee5\u4e0b\u662fRIGHT JOIN\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT customers.customer_id, customers.first_name, customers.last_name, orders.order_id, orders.order_date FROM customers RIGHT JOIN orders ON customers.customer_id = orders.customer_id; <\/code>\u8fd9\u5c06\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u96c6\uff0c\u5176\u4e2d\u5305\u542b\u5ba2\u6237ID\u3001\u540d\u5b57\u3001\u59d3\u6c0f\u3001\u8ba2\u5355ID\u548c\u8ba2\u5355\u65e5\u671f\u3002\u7ed3\u679c\u96c6\u5305\u62ec\u5728orders\u8868\u4e2d\u6240\u6709\u7684\u884c\uff0c\u4ee5\u53ca\u5728customers\u8868\u4e2d\u4e0e\u4e4b\u5339\u914d\u7684\u884c\u3002\u5982\u679c\u67d0\u4e2a\u8ba2\u5355\u5728customers\u8868\u4e2d\u6ca1\u6709\u4efb\u4f55\u5339\u914d\u7684\u884c\uff0c\u5219\u8be5\u5ba2\u6237\u7684ID\u3001\u540d\u5b57\u548c\u59d3\u6c0f\u5b57\u6bb5\u5c06\u8fd4\u56deNULL\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u53f3\u8fde\u63a5\u662f\u4e00\u79cd\u5c06\u4e24\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u7684\u884c\u6309\u7167\u5171\u540c\u7684\u503c\u8fdb\u884c\u5339\u914d\u7684\u64cd\u4f5c\u3002\u5b83\u8fd4\u56de\u53f3\u8868\uff08\u5373\u7b2c\u4e8c\u4e2a\u8868\uff09\u4e2d\u6240\u6709\u7684\u884c\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u5728\u7b2c\u4e00\u4e2a\u8868\u4e2d\u6709\u5339\u914d\u7684\u884c\u3002\u5728\u4f7f\u7528RIGHT JOIN\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u6b63\u786e\u7684\u8868\u548c\u5339\u914d\u5217\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u8fdb\u884c\u5339\u914d\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5168\u8fde\u63a5\uff08FULL JOIN\uff09<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u5168\u8fde\u63a5\uff08FULL JOIN\uff09\u662f\u4e00\u79cd\u5c06\u4e24\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u7684\u884c\u6309\u7167\u5171\u540c\u7684\u503c\u8fdb\u884c\u5339\u914d\u7684\u64cd\u4f5c\u3002\u4e0e\u5de6\u8fde\u63a5\u548c\u53f3\u8fde\u63a5\u4e0d\u540c\uff0c\u5168\u8fde\u63a5\u8fd4\u56de\u4e24\u4e2a\u8868\u4e2d\u6240\u6709\u7684\u884c\uff0c\u4e0d\u7ba1\u662f\u5426\u6709\u5339\u914d\u7684\u884c\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662fFULL JOIN\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bed\u6cd5FULL JOIN\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>SELECT table1.column1, table2.column2... FROM table1 FULL JOIN table2 ON table1.matching_column = table2.matching_column; <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0ctable1\u548ctable2\u662f\u8981\u8fdb\u884c\u8fde\u63a5\u7684\u4e24\u4e2a\u8868\uff0cmatching_column\u662f\u7528\u4e8e\u5339\u914d\u7684\u5217\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u8868\uff1acustomers\u548corders\u3002customers\u8868\u5305\u542b\u5ba2\u6237\u4fe1\u606f\uff0corders\u8868\u5305\u542b\u8ba2\u5355\u4fe1\u606f\u3002\u8981\u627e\u5230\u6240\u6709\u5ba2\u6237\u53ca\u5176\u8ba2\u5355\uff0c\u5305\u62ec\u90a3\u4e9b\u6ca1\u6709\u5ba2\u6237\u4fe1\u606f\u6216\u8ba2\u5355\u4fe1\u606f\u7684\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528FULL JOIN\u3002\u4ee5\u4e0b\u662fFULL JOIN\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT customers.customer_id, customers.first_name, customers.last_name, orders.order_id, orders.order_date FROM customers FULL JOIN orders ON customers.customer_id = orders.customer_id; <\/code>\u8fd9\u5c06\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u96c6\uff0c\u5176\u4e2d\u5305\u542b\u5ba2\u6237ID\u3001\u540d\u5b57\u3001\u59d3\u6c0f\u3001\u8ba2\u5355ID\u548c\u8ba2\u5355\u65e5\u671f\u3002\u7ed3\u679c\u96c6\u5305\u62ec\u5728customers\u8868\u548corders\u8868\u4e2d\u6240\u6709\u7684\u884c\uff0c\u5982\u679c\u67d0\u4e2a\u5ba2\u6237\u6216\u8ba2\u5355\u5728\u53e6\u4e00\u4e2a\u8868\u4e2d\u6ca1\u6709\u4efb\u4f55\u5339\u914d\u7684\u884c\uff0c\u5219\u8be5\u884c\u7684\u5b57\u6bb5\u5c06\u8fd4\u56deNULL\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u5168\u8fde\u63a5\u662f\u4e00\u79cd\u5c06\u4e24\u4e2a\u6216\u591a\u4e2a\u8868\u4e2d\u7684\u884c\u6309\u7167\u5171\u540c\u7684\u503c\u8fdb\u884c\u5339\u914d\u7684\u64cd\u4f5c\u3002\u5b83\u8fd4\u56de\u4e24\u4e2a\u8868\u4e2d\u6240\u6709\u7684\u884c\uff0c\u4e0d\u7ba1\u662f\u5426\u6709\u5339\u914d\u7684\u884c\u3002\u5728\u4f7f\u7528FULL JOIN\u65f6\uff0c\u8bf7\u786e\u4fdd\u6307\u5b9a\u6b63\u786e\u7684\u8868\u548c\u5339\u914d\u5217\uff0c\u5e76\u4e14\u80fd\u591f\u6b63\u786e\u5730\u8fdb\u884c\u5339\u914d\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5185\u5d4c\u5b50\u67e5\u8be2<\/p>\n\n\n\n<p>\u5728SQL\u4e2d\uff0c\u5185\u5d4c\u5b50\u67e5\u8be2\u662f\u4e00\u79cd\u67e5\u8be2\u8bed\u53e5\uff0c\u5b83\u5d4c\u5957\u5728\u5176\u4ed6\u67e5\u8be2\u8bed\u53e5\u4e2d\uff0c\u7528\u4e8e\u68c0\u7d22\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u5b50\u96c6\u3002\u5185\u5d4c\u5b50\u67e5\u8be2\u901a\u5e38\u7528\u4e8e\u9650\u5236\u8fd4\u56de\u6570\u636e\u96c6\u7684\u5927\u5c0f\uff0c\u6216\u8005\u5728WHERE\u6216HAVING\u5b50\u53e5\u4e2d\u8fdb\u884c\u6bd4\u8f83\u6216\u8fc7\u6ee4\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u5185\u5d4c\u5b50\u67e5\u8be2\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bed\u6cd5\u5185\u5d4c\u5b50\u67e5\u8be2\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>SELECT column1, column2, ... FROM table1 WHERE column_name operator (SELECT column_name FROM table2 WHERE condition); <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0c\u5916\u90e8\u67e5\u8be2\u7684\u7ed3\u679c\u5c06\u4f5c\u4e3a\u5185\u90e8\u67e5\u8be2\u7684\u6761\u4ef6\uff0cinner query\u88ab\u5d4c\u5957\u5728outer query\u4e2d\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u8868\uff1acustomers\u548corders\u3002customers\u8868\u5305\u542b\u5ba2\u6237\u4fe1\u606f\uff0corders\u8868\u5305\u542b\u8ba2\u5355\u4fe1\u606f\u3002\u8981\u627e\u5230\u6240\u6709\u4e0b\u5355\u6570\u91cf\u5927\u4e8e\u5e73\u5747\u4e0b\u5355\u6570\u91cf\u7684\u5ba2\u6237\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u5d4c\u5b50\u67e5\u8be2\u3002\u4ee5\u4e0b\u662f\u5185\u5d4c\u5b50\u67e5\u8be2\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE customer_id IN (SELECT customer_id FROM orders GROUP BY customer_id HAVING COUNT(*) &gt; (SELECT AVG(COUNT(*)) FROM orders GROUP BY customer_id)); <\/code>\u8fd9\u5c06\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u96c6\uff0c\u5176\u4e2d\u5305\u542b\u6240\u6709\u4e0b\u5355\u6570\u91cf\u5927\u4e8e\u5e73\u5747\u4e0b\u5355\u6570\u91cf\u7684\u5ba2\u6237\u7684\u4fe1\u606f\u3002\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u5185\u5d4c\u5b50\u67e5\u8be2\u7528\u4e8e\u8ba1\u7b97\u5e73\u5747\u4e0b\u5355\u6570\u91cf\uff0c\u5e76\u4e0e\u5916\u90e8\u67e5\u8be2\u4e2d\u7684\u4e0b\u5355\u6570\u91cf\u8fdb\u884c\u6bd4\u8f83\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u5185\u5d4c\u5b50\u67e5\u8be2\u662f\u4e00\u79cd\u67e5\u8be2\u8bed\u53e5\uff0c\u5b83\u5d4c\u5957\u5728\u5176\u4ed6\u67e5\u8be2\u8bed\u53e5\u4e2d\uff0c\u7528\u4e8e\u68c0\u7d22\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u5b50\u96c6\u3002\u5185\u5d4c\u5b50\u67e5\u8be2\u901a\u5e38\u7528\u4e8e\u9650\u5236\u8fd4\u56de\u6570\u636e\u96c6\u7684\u5927\u5c0f\uff0c\u6216\u8005\u5728WHERE\u6216HAVING\u5b50\u53e5\u4e2d\u8fdb\u884c\u6bd4\u8f83\u6216\u8fc7\u6ee4\u3002\u5728\u4f7f\u7528\u5185\u5d4c\u5b50\u67e5\u8be2\u65f6\uff0c\u8bf7\u786e\u4fdd\u6b63\u786e\u5d4c\u5957\u67e5\u8be2\uff0c\u5e76\u5c06\u7ed3\u679c\u7528\u4e8e\u6b63\u786e\u7684\u5916\u90e8\u67e5\u8be2\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u76f8\u5173\u5b50\u67e5\u8be2<\/p>\n\n\n\n<p>\u5728SQL\u4e2d\uff0c\u76f8\u5173\u5b50\u67e5\u8be2\u662f\u4e00\u79cd\u5d4c\u5957\u5728\u5176\u4ed6\u67e5\u8be2\u8bed\u53e5\u4e2d\u7684\u67e5\u8be2\uff0c\u7528\u4e8e\u68c0\u7d22\u4e0e\u5916\u90e8\u67e5\u8be2\u7ed3\u679c\u76f8\u5173\u7684\u6570\u636e\u5b50\u96c6\u3002\u76f8\u5173\u5b50\u67e5\u8be2\u901a\u5e38\u7528\u4e8e\u9650\u5236\u8fd4\u56de\u6570\u636e\u96c6\u7684\u5927\u5c0f\uff0c\u6216\u8005\u5728WHERE\u6216HAVING\u5b50\u53e5\u4e2d\u8fdb\u884c\u6bd4\u8f83\u6216\u8fc7\u6ee4\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u76f8\u5173\u5b50\u67e5\u8be2\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bed\u6cd5\u76f8\u5173\u5b50\u67e5\u8be2\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>SELECT column1, column2, ... FROM table1 WHERE EXISTS (SELECT column_name FROM table2 WHERE condition AND table2.column_name = table1.column_name); <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0c\u5916\u90e8\u67e5\u8be2\u4e2d\u7684\u6bcf\u4e00\u884c\u5c06\u7528\u4e8e\u6267\u884c\u5185\u90e8\u67e5\u8be2\uff0c\u5e76\u8fd4\u56de\u6240\u6709\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u5b50\u96c6\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u8868\uff1acustomers\u548corders\u3002customers\u8868\u5305\u542b\u5ba2\u6237\u4fe1\u606f\uff0corders\u8868\u5305\u542b\u8ba2\u5355\u4fe1\u606f\u3002\u8981\u627e\u5230\u6240\u6709\u6709\u4e0b\u5355\u8bb0\u5f55\u7684\u5ba2\u6237\uff0c\u53ef\u4ee5\u4f7f\u7528\u76f8\u5173\u5b50\u67e5\u8be2\u3002\u4ee5\u4e0b\u662f\u76f8\u5173\u5b50\u67e5\u8be2\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE EXISTS (SELECT * FROM orders WHERE orders.customer_id = customers.customer_id); <\/code>\u8fd9\u5c06\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u96c6\uff0c\u5176\u4e2d\u5305\u542b\u6240\u6709\u6709\u4e0b\u5355\u8bb0\u5f55\u7684\u5ba2\u6237\u7684\u4fe1\u606f\u3002\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u76f8\u5173\u5b50\u67e5\u8be2\u7528\u4e8e\u68c0\u7d22\u4e0e\u5916\u90e8\u67e5\u8be2\u4e2d\u7684\u6bcf\u4e2a\u5ba2\u6237\u76f8\u5173\u7684\u8ba2\u5355\u8bb0\u5f55\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u76f8\u5173\u5b50\u67e5\u8be2\u662f\u4e00\u79cd\u5d4c\u5957\u5728\u5176\u4ed6\u67e5\u8be2\u8bed\u53e5\u4e2d\u7684\u67e5\u8be2\uff0c\u7528\u4e8e\u68c0\u7d22\u4e0e\u5916\u90e8\u67e5\u8be2\u7ed3\u679c\u76f8\u5173\u7684\u6570\u636e\u5b50\u96c6\u3002\u76f8\u5173\u5b50\u67e5\u8be2\u901a\u5e38\u7528\u4e8e\u9650\u5236\u8fd4\u56de\u6570\u636e\u96c6\u7684\u5927\u5c0f\uff0c\u6216\u8005\u5728WHERE\u6216HAVING\u5b50\u53e5\u4e2d\u8fdb\u884c\u6bd4\u8f83\u6216\u8fc7\u6ee4\u3002\u5728\u4f7f\u7528\u76f8\u5173\u5b50\u67e5\u8be2\u65f6\uff0c\u8bf7\u786e\u4fdd\u6b63\u786e\u5d4c\u5957\u67e5\u8be2\uff0c\u5e76\u5c06\u7ed3\u679c\u7528\u4e8e\u6b63\u786e\u7684\u5916\u90e8\u67e5\u8be2\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91caEXISTS\u4e0eNOT EXISTS<\/p>\n\n\n\n<p>\u5728SQL\u4e2d\uff0cEXISTS\u548cNOT EXISTS\u662f\u7528\u4e8e\u68c0\u67e5\u662f\u5426\u5b58\u5728\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u5b50\u96c6\u7684\u8c13\u8bcd\u3002\u5b83\u4eec\u901a\u5e38\u7528\u4e8eWHERE\u5b50\u53e5\u4e2d\uff0c\u7528\u4e8e\u8fc7\u6ee4\u6570\u636e\u5b50\u96c6\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662fEXISTS\u548cNOT EXISTS\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>EXISTSEXISTS\u7528\u4e8e\u68c0\u67e5\u662f\u5426\u5b58\u5728\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u5b50\u96c6\u3002\u5982\u679c\u5b50\u67e5\u8be2\u8fd4\u56de\u81f3\u5c11\u4e00\u884c\uff0c\u5219EXISTS\u8fd4\u56deTRUE\uff1b\u5426\u5219\u8fd4\u56deFALSE\u3002EXISTS\u7684\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>SELECT column1, column2, ... FROM table1 WHERE EXISTS (SELECT column_name FROM table2 WHERE condition AND table2.column_name = table1.column_name); <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0c\u5916\u90e8\u67e5\u8be2\u4e2d\u7684\u6bcf\u4e00\u884c\u5c06\u7528\u4e8e\u6267\u884c\u5185\u90e8\u67e5\u8be2\uff0c\u5e76\u8fd4\u56de\u6240\u6709\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u5b50\u96c6\u3002<\/li>\n\n\n\n<li>NOT EXISTSNOT EXISTS\u4e0eEXISTS\u76f8\u53cd\uff0c\u7528\u4e8e\u68c0\u67e5\u662f\u5426\u4e0d\u5b58\u5728\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u5b50\u96c6\u3002\u5982\u679c\u5b50\u67e5\u8be2\u8fd4\u56de\u81f3\u5c11\u4e00\u884c\uff0c\u5219NOT EXISTS\u8fd4\u56deFALSE\uff1b\u5426\u5219\u8fd4\u56deTRUE\u3002NOT EXISTS\u7684\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>SELECT column1, column2, ... FROM table1 WHERE NOT EXISTS (SELECT column_name FROM table2 WHERE condition AND table2.column_name = table1.column_name); <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0c\u5916\u90e8\u67e5\u8be2\u4e2d\u7684\u6bcf\u4e00\u884c\u5c06\u7528\u4e8e\u6267\u884c\u5185\u90e8\u67e5\u8be2\uff0c\u5e76\u8fd4\u56de\u6240\u6709\u4e0d\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u5b50\u96c6\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e24\u4e2a\u8868\uff1acustomers\u548corders\u3002customers\u8868\u5305\u542b\u5ba2\u6237\u4fe1\u606f\uff0corders\u8868\u5305\u542b\u8ba2\u5355\u4fe1\u606f\u3002\u8981\u627e\u5230\u6240\u6709\u6ca1\u6709\u4e0b\u5355\u8bb0\u5f55\u7684\u5ba2\u6237\uff0c\u53ef\u4ee5\u4f7f\u7528NOT EXISTS\u3002\u4ee5\u4e0b\u662fNOT EXISTS\u7684\u793a\u4f8b\uff1asqlCopy code<code>SELECT * FROM customers WHERE NOT EXISTS (SELECT * FROM orders WHERE orders.customer_id = customers.customer_id); <\/code>\u8fd9\u5c06\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u96c6\uff0c\u5176\u4e2d\u5305\u542b\u6240\u6709\u6ca1\u6709\u4e0b\u5355\u8bb0\u5f55\u7684\u5ba2\u6237\u7684\u4fe1\u606f\u3002\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cNOT EXISTS\u7528\u4e8e\u68c0\u7d22\u4e0e\u5916\u90e8\u67e5\u8be2\u4e2d\u7684\u6bcf\u4e2a\u5ba2\u6237\u4e0d\u76f8\u5173\u7684\u8ba2\u5355\u8bb0\u5f55\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0cEXISTS\u548cNOT EXISTS\u662f\u7528\u4e8e\u68c0\u67e5\u662f\u5426\u5b58\u5728\u6216\u4e0d\u5b58\u5728\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\u5b50\u96c6\u7684\u8c13\u8bcd\u3002\u5b83\u4eec\u901a\u5e38\u7528\u4e8eWHERE\u5b50\u53e5\u4e2d\uff0c\u7528\u4e8e\u8fc7\u6ee4\u6570\u636e\u5b50\u96c6\u3002\u5728\u4f7f\u7528EXISTS\u548cNOT EXISTS\u65f6\uff0c\u8bf7\u786e\u4fdd\u6b63\u786e\u5730\u5d4c\u5957\u67e5\u8be2\uff0c\u5e76\u5c06\u7ed3\u679c\u7528\u4e8e\u6b63\u786e\u7684\u5916\u90e8\u67e5\u8be2\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>1 \/ 2<\/p>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u521b\u5efa\u89c6\u56fe<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u89c6\u56fe\u662f\u4e00\u4e2a\u865a\u62df\u8868\uff0c\u5b83\u57fa\u4e8e\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u5b9e\u9645\u8868\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u4e2a\u65b9\u4fbf\u7684\u65b9\u5f0f\u6765\u8bbf\u95ee\u548c\u7ec4\u7ec7\u6570\u636e\u3002\u901a\u8fc7\u521b\u5efa\u89c6\u56fe\uff0c\u53ef\u4ee5\u4f7f\u7528SQL\u8bed\u53e5\u67e5\u8be2\u89c6\u56fe\u6765\u68c0\u7d22\u9700\u8981\u7684\u6570\u636e\uff0c\u800c\u65e0\u9700\u77e5\u9053\u89c6\u56fe\u5e95\u5c42\u7684\u5b9e\u9645\u8868\u7ed3\u6784\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u521b\u5efa\u89c6\u56fe\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bed\u6cd5\u521b\u5efa\u89c6\u56fe\u7684\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>CREATE VIEW view_name AS SELECT column1, column2, ... FROM table1 WHERE condition; <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0cview_name\u662f\u8981\u521b\u5efa\u7684\u89c6\u56fe\u7684\u540d\u79f0\uff0ccolumn1\u3001column2\u7b49\u662f\u89c6\u56fe\u4e2d\u5305\u542b\u7684\u5217\uff0ctable1\u662f\u89c6\u56fe\u6240\u57fa\u4e8e\u7684\u5b9e\u9645\u8868\uff0ccondition\u662f\u7528\u4e8e\u8fc7\u6ee4\u6570\u636e\u7684\u6761\u4ef6\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3acustomers\u7684\u8868\uff0c\u5305\u542b\u5ba2\u6237\u4fe1\u606f\u3002\u8981\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aactive_customers\u7684\u89c6\u56fe\uff0c\u4ec5\u5305\u62ec\u72b6\u6001\u4e3a&#8221;active&#8221;\u7684\u5ba2\u6237\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1asqlCopy code<code>CREATE VIEW active_customers AS SELECT customer_id, first_name, last_name, email FROM customers WHERE status = 'active'; <\/code>\u7136\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528SELECT\u8bed\u53e5\u67e5\u8be2active_customers\u89c6\u56fe\u6765\u68c0\u7d22\u9700\u8981\u7684\u6570\u636e\uff0c\u5982\u4e0b\u6240\u793a\uff1asqlCopy code<code>SELECT * FROM active_customers; <\/code>\u8fd9\u5c06\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u96c6\uff0c\u5176\u4e2d\u5305\u542b\u72b6\u6001\u4e3a&#8221;active&#8221;\u7684\u6240\u6709\u5ba2\u6237\u7684\u4fe1\u606f\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u521b\u5efa\u89c6\u56fe\u662f\u4e00\u4e2a\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u8bbf\u95ee\u548c\u7ec4\u7ec7\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002\u901a\u8fc7\u4f7f\u7528CREATE VIEW\u8bed\u53e5\u521b\u5efa\u89c6\u56fe\uff0c\u53ef\u4ee5\u57fa\u4e8e\u4e00\u4e2a\u6216\u591a\u4e2a\u5b9e\u9645\u8868\u521b\u5efa\u4e00\u4e2a\u865a\u62df\u8868\uff0c\u7136\u540e\u4f7f\u7528SELECT\u8bed\u53e5\u6765\u67e5\u8be2\u8be5\u89c6\u56fe\u3002\u5728\u521b\u5efa\u89c6\u56fe\u65f6\uff0c\u8bf7\u786e\u4fdd\u9009\u62e9\u6b63\u786e\u7684\u5217\u548c\u8fc7\u6ee4\u6761\u4ef6\uff0c\u5e76\u4e3a\u89c6\u56fe\u547d\u540d\u4e00\u4e2a\u6709\u610f\u4e49\u7684\u540d\u79f0\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u4fee\u6539\u89c6\u56fe<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u89c6\u56fe\u662f\u4e00\u4e2a\u865a\u62df\u8868\uff0c\u5b83\u57fa\u4e8e\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u5b9e\u9645\u8868\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u4e2a\u65b9\u4fbf\u7684\u65b9\u5f0f\u6765\u8bbf\u95ee\u548c\u7ec4\u7ec7\u6570\u636e\u3002\u89c6\u56fe\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8fdb\u884c\u4fee\u6539\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u6ee1\u8db3\u67e5\u8be2\u9700\u6c42\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4fee\u6539\u89c6\u56fe\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bed\u6cd5\u4fee\u6539\u89c6\u56fe\u7684\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>CREATE OR REPLACE VIEW view_name AS SELECT column1, column2, ... FROM table1 WHERE condition; <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0cview_name\u662f\u8981\u4fee\u6539\u7684\u89c6\u56fe\u7684\u540d\u79f0\uff0ccolumn1\u3001column2\u7b49\u662f\u89c6\u56fe\u4e2d\u5305\u542b\u7684\u5217\uff0ctable1\u662f\u89c6\u56fe\u6240\u57fa\u4e8e\u7684\u5b9e\u9645\u8868\uff0ccondition\u662f\u7528\u4e8e\u8fc7\u6ee4\u6570\u636e\u7684\u6761\u4ef6\u3002\u6ce8\u610f\uff0c\u5728\u4fee\u6539\u89c6\u56fe\u65f6\uff0c\u5fc5\u987b\u4f7f\u7528CREATE OR REPLACE VIEW\u8bed\u53e5\uff0c\u5e76\u63d0\u4f9b\u65b0\u7684SELECT\u8bed\u53e5\uff0c\u4ee5\u66ff\u6362\u539f\u6765\u7684SELECT\u8bed\u53e5\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3aactive_customers\u7684\u89c6\u56fe\uff0c\u4ec5\u5305\u62ec\u72b6\u6001\u4e3a&#8221;active&#8221;\u7684\u5ba2\u6237\u3002\u8981\u4fee\u6539\u8be5\u89c6\u56fe\uff0c\u4ee5\u4fbf\u8fd8\u5305\u62ec\u5ba2\u6237\u7684\u5730\u5740\u4fe1\u606f\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1asqlCopy code<code>CREATE OR REPLACE VIEW active_customers AS SELECT customer_id, first_name, last_name, email, address FROM customers WHERE status = 'active'; <\/code>\u7136\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528SELECT\u8bed\u53e5\u67e5\u8be2\u4fee\u6539\u540e\u7684active_customers\u89c6\u56fe\u6765\u68c0\u7d22\u9700\u8981\u7684\u6570\u636e\uff0c\u5982\u4e0b\u6240\u793a\uff1asqlCopy code<code>SELECT * FROM active_customers; <\/code>\u8fd9\u5c06\u8fd4\u56de\u4e00\u4e2a\u7ed3\u679c\u96c6\uff0c\u5176\u4e2d\u5305\u542b\u72b6\u6001\u4e3a&#8221;active&#8221;\u7684\u6240\u6709\u5ba2\u6237\u7684\u4fe1\u606f\uff0c\u5305\u62ec\u4ed6\u4eec\u7684\u5730\u5740\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u4fee\u6539\u89c6\u56fe\u662f\u4e00\u4e2a\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u66f4\u6539\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u7ec4\u7ec7\u65b9\u5f0f\u3002\u901a\u8fc7\u4f7f\u7528CREATE OR REPLACE VIEW\u8bed\u53e5\u4fee\u6539\u89c6\u56fe\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u6dfb\u52a0\u6216\u5220\u9664\u5217\u3001\u66f4\u6539\u8fc7\u6ee4\u6761\u4ef6\u6216\u66f4\u6539\u89c6\u56fe\u57fa\u4e8e\u7684\u5b9e\u9645\u8868\u3002\u5728\u4fee\u6539\u89c6\u56fe\u65f6\uff0c\u8bf7\u786e\u4fdd\u9009\u62e9\u6b63\u786e\u7684\u5217\u548c\u8fc7\u6ee4\u6761\u4ef6\uff0c\u5e76\u4e3a\u89c6\u56fe\u547d\u540d\u4e00\u4e2a\u6709\u610f\u4e49\u7684\u540d\u79f0\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5220\u9664\u89c6\u56fe<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u89c6\u56fe\u662f\u4e00\u4e2a\u865a\u62df\u8868\uff0c\u5b83\u57fa\u4e8e\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u5b9e\u9645\u8868\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u4e2a\u65b9\u4fbf\u7684\u65b9\u5f0f\u6765\u8bbf\u95ee\u548c\u7ec4\u7ec7\u6570\u636e\u3002\u5f53\u4e0d\u518d\u9700\u8981\u4e00\u4e2a\u89c6\u56fe\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528DROP VIEW\u8bed\u53e5\u5c06\u5176\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u5220\u9664\u89c6\u56fe\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8bed\u6cd5\u5220\u9664\u89c6\u56fe\u7684\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>DROP VIEW view_name; <\/code>\u5728\u8fd9\u4e2a\u8bed\u6cd5\u4e2d\uff0cview_name\u662f\u8981\u5220\u9664\u7684\u89c6\u56fe\u7684\u540d\u79f0\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\u4f8b\u5982\uff0c\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3aactive_customers\u7684\u89c6\u56fe\uff0c\u4ec5\u5305\u62ec\u72b6\u6001\u4e3a&#8221;active&#8221;\u7684\u5ba2\u6237\u3002\u8981\u5220\u9664\u8be5\u89c6\u56fe\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1asqlCopy code<code>DROP VIEW active_customers; <\/code>\u7136\u540e\uff0c\u8be5\u89c6\u56fe\u5c06\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\uff0c\u65e0\u6cd5\u518d\u88ab\u67e5\u8be2\u6216\u4f7f\u7528\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u5220\u9664\u89c6\u56fe\u662f\u4e00\u4e2a\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\u4e0d\u518d\u9700\u8981\u7684\u89c6\u56fe\u3002\u901a\u8fc7\u4f7f\u7528DROP VIEW\u8bed\u53e5\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5220\u9664\u4e00\u4e2a\u89c6\u56fe\u3002\u5728\u5220\u9664\u89c6\u56fe\u65f6\uff0c\u8bf7\u786e\u4fdd\u6b63\u786e\u5730\u547d\u540d\u8981\u5220\u9664\u7684\u89c6\u56fe\uff0c\u5e76\u786e\u4fdd\u5728\u5220\u9664\u4e4b\u524d\u4e0d\u518d\u9700\u8981\u8be5\u89c6\u56fe\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u7d22\u5f15\u7684\u6982\u5ff5\u4e0e\u7c7b\u578b<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u63d0\u9ad8\u6570\u636e\u68c0\u7d22\u7684\u6548\u7387\u3002\u7d22\u5f15\u53ef\u4ee5\u770b\u4f5c\u662f\u5bf9\u6570\u636e\u5e93\u8868\u4e2d\u7684\u67d0\u4e9b\u5217\u8fdb\u884c\u6392\u5e8f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u4f7f\u5f97\u67e5\u8be2\u65f6\u80fd\u591f\u66f4\u5feb\u5730\u627e\u5230\u7b26\u5408\u6761\u4ef6\u7684\u6570\u636e\u884c\u3002\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\uff0c\u4f46\u4e5f\u4f1a\u589e\u52a0\u6570\u636e\u5e93\u7684\u5b58\u50a8\u7a7a\u95f4\u548c\u6570\u636e\u4fee\u6539\u7684\u590d\u6742\u6027\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u7d22\u5f15\u7684\u6982\u5ff5\u4e0e\u7c7b\u578b\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6982\u5ff5\u7d22\u5f15\u662f\u4e00\u4e2a\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u5305\u542b\u6709\u5e8f\u7684\u952e\u503c\u5bf9\uff0c\u5176\u4e2d\u952e\u662f\u5728\u6570\u636e\u5e93\u8868\u4e2d\u7684\u67d0\u4e9b\u5217\u7684\u503c\uff0c\u800c\u503c\u662f\u5bf9\u5e94\u7684\u884c\u8bb0\u5f55\u7684\u4f4d\u7f6e\u3002\u5728\u67e5\u8be2\u65f6\uff0c\u6570\u636e\u5e93\u53ef\u4ee5\u5229\u7528\u7d22\u5f15\u6765\u5feb\u901f\u5730\u5b9a\u4f4d\u7b26\u5408\u6761\u4ef6\u7684\u6570\u636e\u884c\uff0c\u4ece\u800c\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002\u7d22\u5f15\u7684\u5b9e\u73b0\u65b9\u5f0f\u6709\u5f88\u591a\u79cd\uff0c\u5305\u62ecB-tree\u7d22\u5f15\u3001\u54c8\u5e0c\u7d22\u5f15\u3001\u5168\u6587\u7d22\u5f15\u7b49\u3002\u4e0d\u540c\u7c7b\u578b\u7684\u7d22\u5f15\u9002\u7528\u4e8e\u4e0d\u540c\u7c7b\u578b\u7684\u67e5\u8be2\uff0c\u5e94\u6839\u636e\u5b9e\u9645\u9700\u6c42\u6765\u9009\u62e9\u9002\u5f53\u7684\u7d22\u5f15\u7c7b\u578b\u3002<\/li>\n\n\n\n<li>\u7c7b\u578b\u5e38\u89c1\u7684\u7d22\u5f15\u7c7b\u578b\u5305\u62ec\u4ee5\u4e0b\u51e0\u79cd\uff1a\n<ul class=\"wp-block-list\">\n<li>B-tree\u7d22\u5f15B-tree\u7d22\u5f15\u662f\u6700\u5e38\u89c1\u7684\u7d22\u5f15\u7c7b\u578b\u4e4b\u4e00\uff0c\u5b83\u9002\u7528\u4e8e\u8303\u56f4\u67e5\u8be2\u548c\u7b49\u503c\u67e5\u8be2\u3002\u5b83\u901a\u8fc7\u5c06\u7d22\u5f15\u952e\u503c\u5bf9\u6309\u987a\u5e8f\u5b58\u50a8\u5728\u4e00\u4e2a\u5e73\u8861\u6811\u7ed3\u6784\u4e2d\u6765\u5b9e\u73b0\u5feb\u901f\u67e5\u627e\u3002B-tree\u7d22\u5f15\u9002\u7528\u4e8e\u8bb8\u591a\u7c7b\u578b\u7684\u6570\u636e\uff0c\u5305\u62ec\u6570\u5b57\u3001\u65e5\u671f\u3001\u5b57\u7b26\u4e32\u7b49\u3002<\/li>\n\n\n\n<li>\u54c8\u5e0c\u7d22\u5f15\u54c8\u5e0c\u7d22\u5f15\u662f\u4e00\u79cd\u4f7f\u7528\u54c8\u5e0c\u51fd\u6570\u6765\u5b58\u50a8\u952e\u503c\u5bf9\u7684\u7d22\u5f15\u7c7b\u578b\u3002\u5b83\u9002\u7528\u4e8e\u7b49\u503c\u67e5\u8be2\uff0c\u4f46\u4e0d\u9002\u7528\u4e8e\u8303\u56f4\u67e5\u8be2\u3002\u54c8\u5e0c\u7d22\u5f15\u53ef\u4ee5\u5feb\u901f\u67e5\u627e\u7279\u5b9a\u952e\u503c\u5bf9\uff0c\u4f46\u5982\u679c\u952e\u503c\u5bf9\u5206\u5e03\u4e0d\u5747\u5300\uff0c\u5219\u53ef\u80fd\u5bfc\u81f4\u54c8\u5e0c\u51b2\u7a81\uff0c\u4ece\u800c\u5f71\u54cd\u67e5\u8be2\u6548\u7387\u3002<\/li>\n\n\n\n<li>\u5168\u6587\u7d22\u5f15\u5168\u6587\u7d22\u5f15\u662f\u4e00\u79cd\u7528\u4e8e\u6587\u672c\u641c\u7d22\u7684\u7279\u6b8a\u7d22\u5f15\u7c7b\u578b\u3002\u5b83\u53ef\u4ee5\u5728\u6587\u672c\u4e2d\u67e5\u627e\u7279\u5b9a\u5355\u8bcd\u6216\u77ed\u8bed\uff0c\u5e76\u63d0\u4f9b\u76f8\u5173\u6027\u8bc4\u5206\uff0c\u4ece\u800c\u4f7f\u641c\u7d22\u7ed3\u679c\u66f4\u52a0\u51c6\u786e\u3002\u5168\u6587\u7d22\u5f15\u9002\u7528\u4e8e\u5305\u542b\u5927\u91cf\u6587\u672c\u6570\u636e\u7684\u8868\uff0c\u4f8b\u5982\u535a\u5ba2\u6587\u7ae0\u3001\u65b0\u95fb\u62a5\u9053\u7b49\u3002<\/li>\n\n\n\n<li>\u7a7a\u95f4\u7d22\u5f15\u7a7a\u95f4\u7d22\u5f15\u662f\u4e00\u79cd\u7528\u4e8e\u5904\u7406\u5730\u7406\u7a7a\u95f4\u6570\u636e\u7684\u7d22\u5f15\u7c7b\u578b\u3002\u5b83\u53ef\u4ee5\u5b58\u50a8\u5730\u7406\u5750\u6807\u548c\u5176\u4ed6\u76f8\u5173\u4fe1\u606f\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u7528\u4e8e\u67e5\u8be2\u548c\u5206\u6790\u5730\u7406\u6570\u636e\u7684\u51fd\u6570\u3002\u7a7a\u95f4\u7d22\u5f15\u9002\u7528\u4e8e\u5305\u542b\u5730\u7406\u6570\u636e\u7684\u8868\uff0c\u4f8b\u5982\u5730\u56fe\u3001\u5730\u7406\u4fe1\u606f\u7cfb\u7edf\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u7d22\u5f15\u662f\u4e00\u79cd\u7528\u4e8e\u63d0\u9ad8\u6570\u636e\u5e93\u67e5\u8be2\u6548\u7387\u7684\u7279\u6b8a\u6570\u636e\u7ed3\u6784\u3002\u5e38\u89c1\u7684\u7d22\u5f15\u7c7b\u578b\u5305\u62ecB-tree\u7d22\u5f15\u3001\u54c8\u5e0c\u7d22\u5f15\u3001\u5168\u6587\u7d22\u5f15\u548c\u7a7a\u95f4\u7d22\u5f15\u7b49\u3002\u5728\u4f7f\u7528\u7d22\u5f15\u65f6\uff0c\u5e94\u6839\u636e\u5b9e\u9645\u9700\u6c42<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u7ee7\u7eed<\/p>\n\n\n\n<p>\u9009\u62e9\u9002\u5f53\u7684\u7d22\u5f15\u7c7b\u578b\uff0c\u5e76\u5728\u9700\u8981\u65f6\u5bf9\u8868\u8fdb\u884c\u7d22\u5f15\u4f18\u5316\u3002\u7d22\u5f15\u7684\u4f18\u5316\u53ef\u80fd\u5305\u62ec\u521b\u5efa\u3001\u4fee\u6539\u3001\u5220\u9664\u7d22\u5f15\u7b49\u64cd\u4f5c\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\u8fdb\u884c\u8c03\u6574\u3002\u5728\u5bf9\u8868\u8fdb\u884c\u7d22\u5f15\u4f18\u5316\u65f6\uff0c\u5e94\u6ce8\u610f\u7d22\u5f15\u5bf9\u6570\u636e\u5e93\u7684\u5b58\u50a8\u7a7a\u95f4\u548c\u6027\u80fd\u7684\u5f71\u54cd\uff0c\u5e76\u6743\u8861\u7d22\u5f15\u4e0e\u67e5\u8be2\u6548\u7387\u4e4b\u95f4\u7684\u5e73\u8861\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u521b\u5efa\u3001\u4fee\u6539\u4e0e\u5220\u9664\u7d22\u5f15<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u63d0\u9ad8\u6570\u636e\u68c0\u7d22\u7684\u6548\u7387\u3002\u4e3a\u4e86\u6ee1\u8db3\u4e0d\u540c\u67e5\u8be2\u9700\u6c42\uff0c\u6570\u636e\u5e93\u7ba1\u7406\u5458\u6216\u5f00\u53d1\u4eba\u5458\u9700\u8981\u521b\u5efa\u3001\u4fee\u6539\u6216\u5220\u9664\u7d22\u5f15\u3002\u4ee5\u4e0b\u662f\u521b\u5efa\u3001\u4fee\u6539\u548c\u5220\u9664\u7d22\u5f15\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u521b\u5efa\u7d22\u5f15\u5728\u521b\u5efa\u7d22\u5f15\u4e4b\u524d\uff0c\u9700\u8981\u8003\u8651\u8981\u521b\u5efa\u7684\u7d22\u5f15\u7c7b\u578b\u4ee5\u53ca\u8981\u4e3a\u54ea\u4e9b\u5217\u521b\u5efa\u7d22\u5f15\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u7d22\u5f15\u5e94\u8be5\u521b\u5efa\u5728\u7528\u4e8eWHERE\u5b50\u53e5\u4e2d\u7684\u5217\u4e0a\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002\u521b\u5efa\u7d22\u5f15\u7684\u8bed\u6cd5\u5982\u4e0b\uff1ascssCopy code<code>CREATE [UNIQUE] INDEX index_name ON table_name(column_name); <\/code>\u5176\u4e2d\uff0cindex_name\u662f\u8981\u521b\u5efa\u7684\u7d22\u5f15\u7684\u540d\u79f0\uff0ctable_name\u662f\u8981\u521b\u5efa\u7d22\u5f15\u7684\u8868\u540d\uff0ccolumn_name\u662f\u8981\u4e3a\u5176\u521b\u5efa\u7d22\u5f15\u7684\u5217\u540d\u3002\u5982\u679c\u60f3\u8981\u521b\u5efa\u552f\u4e00\u7d22\u5f15\uff0c\u9700\u8981\u5728CREATE\u5173\u952e\u5b57\u540e\u52a0\u4e0aUNIQUE\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0bSQL\u8bed\u53e5\u521b\u5efa\u4e00\u4e2a\u540d\u4e3acustomers_name_index\u7684\u7d22\u5f15\uff0c\u5b83\u662f\u4e00\u4e2a\u975e\u552f\u4e00\u7d22\u5f15\uff0c\u7528\u4e8e\u8868customers\u4e2d\u7684\u5217name\uff1ascssCopy code<code>CREATE INDEX customers_name_index ON customers(name);<\/code><\/li>\n\n\n\n<li>\u4fee\u6539\u7d22\u5f15\u4fee\u6539\u7d22\u5f15\u901a\u5e38\u5305\u62ec\u66f4\u6539\u7d22\u5f15\u7c7b\u578b\u3001\u66f4\u6539\u7d22\u5f15\u5217\u6216\u91cd\u547d\u540d\u7d22\u5f15\u3002\u8981\u4fee\u6539\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528ALTER INDEX\u8bed\u53e5\u3002\u4fee\u6539\u7d22\u5f15\u7684\u8bed\u6cd5\u5982\u4e0b\uff1acssCopy code<code>ALTER INDEX index_name [RENAME TO new_index_name] [SET tablespace tablespace_name]; <\/code>\u5176\u4e2d\uff0cindex_name\u662f\u8981\u4fee\u6539\u7684\u7d22\u5f15\u7684\u540d\u79f0\uff0cRENAME TO\u7528\u4e8e\u91cd\u547d\u540d\u7d22\u5f15\uff0cSET tablespace\u7528\u4e8e\u66f4\u6539\u7d22\u5f15\u6240\u5728\u7684\u8868\u7a7a\u95f4\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0bSQL\u8bed\u53e5\u5c06\u540d\u4e3acustomers_name_index\u7684\u7d22\u5f15\u91cd\u547d\u540d\u4e3aname_index\uff1acssCopy code<code>ALTER INDEX customers_name_index RENAME TO name_index;<\/code><\/li>\n\n\n\n<li>\u5220\u9664\u7d22\u5f15\u5220\u9664\u7d22\u5f15\u901a\u5e38\u662f\u56e0\u4e3a\u7d22\u5f15\u4e0d\u518d\u9700\u8981\u6216\u5360\u7528\u4e86\u8fc7\u591a\u7684\u5b58\u50a8\u7a7a\u95f4\u3002\u8981\u5220\u9664\u7d22\u5f15\uff0c\u53ef\u4ee5\u4f7f\u7528DROP INDEX\u8bed\u53e5\u3002\u5220\u9664\u7d22\u5f15\u7684\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>DROP INDEX index_name; <\/code>\u5176\u4e2d\uff0cindex_name\u662f\u8981\u5220\u9664\u7684\u7d22\u5f15\u7684\u540d\u79f0\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0bSQL\u8bed\u53e5\u5220\u9664\u540d\u4e3aname_index\u7684\u7d22\u5f15\uff1asqlCopy code<code>DROP INDEX name_index;<\/code><\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u521b\u5efa\u3001\u4fee\u6539\u548c\u5220\u9664\u7d22\u5f15\u662f\u8c03\u6574\u6570\u636e\u5e93\u67e5\u8be2\u6027\u80fd\u7684\u91cd\u8981\u624b\u6bb5\u3002\u5728\u521b\u5efa\u7d22\u5f15\u65f6\uff0c\u5e94\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u7d22\u5f15\u7c7b\u578b\uff0c\u5e76\u5c06\u5176\u521b\u5efa\u5728WHERE\u5b50\u53e5\u4e2d\u4f7f\u7528\u7684\u5217\u4e0a\u3002\u5728\u4fee\u6539\u6216\u5220\u9664\u7d22\u5f15\u65f6\uff0c\u8bf7\u6ce8\u610f\u7d22\u5f15\u5bf9\u6570\u636e\u5e93\u7684\u5b58\u50a8\u7a7a\u95f4\u548c\u6027\u80fd\u7684\u5f71\u54cd\uff0c\u5e76\u8c28\u614e\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u4e3b\u952e\u3001\u5916\u952e\u4e0e\u552f\u4e00\u7ea6\u675f<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u4e3b\u952e\u3001\u5916\u952e\u548c\u552f\u4e00\u7ea6\u675f\u662f\u7528\u4e8e\u4fdd\u8bc1\u6570\u636e\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u7684\u91cd\u8981\u7ea6\u675f\u6761\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e3b\u952e\u3001\u5916\u952e\u548c\u552f\u4e00\u7ea6\u675f\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e3b\u952e\u4e3b\u952e\u662f\u7528\u4e8e\u552f\u4e00\u6807\u8bc6\u8868\u4e2d\u6bcf\u4e2a\u884c\u7684\u5217\u6216\u5217\u7ec4\u5408\u3002\u4e3b\u952e\u5217\u5fc5\u987b\u5305\u542b\u552f\u4e00\u7684\u503c\uff0c\u4e14\u4e0d\u80fd\u4e3a\u7a7a\u3002\u4e3b\u952e\u7684\u4f5c\u7528\u662f\u4fdd\u8bc1\u8868\u4e2d\u7684\u6bcf\u884c\u6570\u636e\u5177\u6709\u552f\u4e00\u6807\u8bc6\uff0c\u53ef\u4ee5\u7528\u4e8e\u8fde\u63a5\u5176\u4ed6\u8868\u6216\u4f5c\u4e3a\u5916\u952e\u5f15\u7528\u3002\u5728\u8868\u4e2d\uff0c\u4e00\u4e2a\u8868\u53ea\u80fd\u6709\u4e00\u4e2a\u4e3b\u952e\u3002\u521b\u5efa\u4e3b\u952e\u7684\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>ALTER TABLE table_name ADD CONSTRAINT pk_constraint PRIMARY KEY (column_name); <\/code>\u5176\u4e2d\uff0ctable_name\u662f\u8981\u521b\u5efa\u4e3b\u952e\u7684\u8868\u540d\uff0cpk_constraint\u662f\u4e3b\u952e\u7ea6\u675f\u7684\u540d\u79f0\uff0ccolumn_name\u662f\u8981\u8bbe\u7f6e\u4e3a\u4e3b\u952e\u7684\u5217\u540d\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0bSQL\u8bed\u53e5\u5c06\u540d\u4e3aid\u7684\u5217\u8bbe\u7f6e\u4e3a\u8868customers\u7684\u4e3b\u952e\uff1asqlCopy code<code>ALTER TABLE customers ADD CONSTRAINT pk_customers_id PRIMARY KEY (id);<\/code><\/li>\n\n\n\n<li>\u5916\u952e\u5916\u952e\u662f\u4e00\u79cd\u7528\u4e8e\u5efa\u7acb\u8868\u4e4b\u95f4\u5173\u8054\u7684\u7ea6\u675f\uff0c\u5b83\u6307\u5b9a\u4e00\u4e2a\u8868\u4e2d\u7684\u5217\u4e0e\u53e6\u4e00\u4e2a\u8868\u4e2d\u7684\u5217\u76f8\u5173\u8054\u3002\u5916\u952e\u53ef\u4ee5\u7528\u6765\u4fdd\u8bc1\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\uff0c\u5b83\u786e\u4fdd\u4e86\u5f15\u7528\u6570\u636e\u8868\u4e2d\u7684\u6bcf\u4e2a\u884c\u90fd\u5177\u6709\u5bf9\u5e94\u7684\u4e3b\u952e\u503c\u3002\u5728\u8868\u4e2d\uff0c\u4e00\u4e2a\u8868\u53ef\u4ee5\u6709\u591a\u4e2a\u5916\u952e\u3002\u521b\u5efa\u5916\u952e\u7684\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>ALTER TABLE table_name ADD CONSTRAINT fk_constraint FOREIGN KEY (column_name) REFERENCES reference_table (reference_column_name); <\/code>\u5176\u4e2d\uff0ctable_name\u662f\u8981\u521b\u5efa\u5916\u952e\u7684\u8868\u540d\uff0cfk_constraint\u662f\u5916\u952e\u7ea6\u675f\u7684\u540d\u79f0\uff0ccolumn_name\u662f\u8981\u4f5c\u4e3a\u5916\u952e\u7684\u5217\u540d\uff0creference_table\u662f\u8981\u5f15\u7528\u7684\u8868\u540d\uff0creference_column_name\u662f\u8981\u5f15\u7528\u7684\u5217\u540d\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0bSQL\u8bed\u53e5\u5728\u8868orders\u4e2d\u521b\u5efa\u4e00\u4e2a\u540d\u4e3afk_orders_customer_id\u7684\u5916\u952e\uff0c\u5b83\u5c06\u5217customer_id\u5f15\u7528\u5230\u8868customers\u4e2d\u7684\u5217id\u4e0a\uff1asqlCopy code<code>ALTER TABLE orders ADD CONSTRAINT fk_orders_customer_id FOREIGN KEY (customer_id) REFERENCES customers (id);<\/code><\/li>\n\n\n\n<li>\u552f\u4e00\u7ea6\u675f\u552f\u4e00\u7ea6\u675f\u662f\u4e00\u79cd\u7528\u4e8e\u4fdd\u8bc1\u8868\u4e2d\u7684\u67d0\u4e9b\u5217\u5177\u6709\u552f\u4e00\u503c\u7684\u7ea6\u675f\u3002\u552f\u4e00\u7ea6\u675f\u7684\u4f5c\u7528\u7c7b\u4f3c\u4e8e\u4e3b\u952e\uff0c\u4f46\u4e0d\u8981\u6c42\u5217\u4e0d\u80fd\u4e3a\u7a7a\u3002\u5728\u8868\u4e2d\uff0c\u4e00\u4e2a\u8868\u53ef\u4ee5\u6709\u591a\u4e2a\u552f\u4e00\u7ea6\u675f\u3002\u521b\u5efa\u552f\u4e00\u7ea6\u675f\u7684\u8bed\u6cd5\u5982\u4e0b\uff1asqlCopy code<code>ALTER TABLE table_name ADD CONSTRAINT unique_constraint UNIQUE (column_name); <\/code>\u5176\u4e2d\uff0ctable_name\u662f\u8981\u521b\u5efa\u552f\u4e00\u7ea6\u675f\u7684\u8868\u540d\uff0cunique_constraint\u662f\u552f\u4e00\u7ea6\u675f\u7684\u540d\u79f0\uff0ccolumn_name\u662f\u8981\u8bbe\u7f6e\u4e3a\u552f\u4e00\u7684\u5217\u540d\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0bSQL\u8bed\u53e5\u5c06\u540d\u4e3aemail\u7684\u5217\u8bbe\u7f6e\u4e3a\u8868customers\u7684\u552f\u4e00\u7ea6\u675f\uff1asqlCopy code<code>ALTER TABLE customers ADD CONSTRAINT uq_customers_email UNIQUE (email);<\/code><\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u4e3b\u952e\u3001\u5916\u952e\u548c\u552f\u4e00\u7ea6\u675f\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7528\u4e8e\u4fdd\u8bc1\u6570\u636e\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u7684\u91cd\u8981<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u7ee7\u7eed<\/p>\n\n\n\n<p>\u7ea6\u675f\u6761\u4ef6\u3002\u5728\u8bbe\u8ba1\u6570\u636e\u5e93\u65f6\uff0c\u5e94\u6839\u636e\u6570\u636e\u7684\u5b9e\u9645\u9700\u6c42\u6765\u9009\u62e9\u5408\u9002\u7684\u7ea6\u675f\u6761\u4ef6\u3002\u4e3b\u952e\u3001\u5916\u952e\u548c\u552f\u4e00\u7ea6\u675f\u90fd\u53ef\u4ee5\u7528\u4e8e\u4fdd\u8bc1\u6570\u636e\u7684\u552f\u4e00\u6027\u548c\u5b8c\u6574\u6027\uff0c\u4f46\u5b83\u4eec\u7684\u4f5c\u7528\u4e0d\u540c\u3002\u4e3b\u952e\u662f\u7528\u4e8e\u552f\u4e00\u6807\u8bc6\u8868\u4e2d\u6bcf\u884c\u6570\u636e\u7684\u5217\u6216\u5217\u7ec4\u5408\uff0c\u5b83\u4e0d\u80fd\u5305\u542b\u7a7a\u503c\u3002\u5916\u952e\u662f\u7528\u4e8e\u5efa\u7acb\u8868\u4e4b\u95f4\u5173\u8054\u7684\u7ea6\u675f\uff0c\u5b83\u6307\u5b9a\u4e00\u4e2a\u8868\u4e2d\u7684\u5217\u4e0e\u53e6\u4e00\u4e2a\u8868\u4e2d\u7684\u5217\u76f8\u5173\u8054\u3002\u552f\u4e00\u7ea6\u675f\u662f\u7528\u4e8e\u4fdd\u8bc1\u8868\u4e2d\u7684\u67d0\u4e9b\u5217\u5177\u6709\u552f\u4e00\u503c\u7684\u7ea6\u675f\uff0c\u5b83\u7c7b\u4f3c\u4e8e\u4e3b\u952e\uff0c\u4f46\u4e0d\u8981\u6c42\u5217\u4e0d\u80fd\u4e3a\u7a7a\u3002<\/p>\n\n\n\n<p>\u5728\u5e94\u7528\u8fd9\u4e9b\u7ea6\u675f\u6761\u4ef6\u65f6\uff0c\u5e94\u8be5\u6ce8\u610f\u9075\u5b88\u6570\u636e\u5e93\u8bbe\u8ba1\u7684\u539f\u5219\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6bcf\u4e2a\u8868\u90fd\u5e94\u8be5\u6709\u4e00\u4e2a\u4e3b\u952e\uff0c\u7528\u4e8e\u552f\u4e00\u6807\u8bc6\u8868\u4e2d\u7684\u6bcf\u884c\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u5916\u952e\u5e94\u8be5\u6307\u5411\u4e3b\u952e\uff0c\u4ee5\u786e\u4fdd\u8868\u4e4b\u95f4\u7684\u5173\u8054\u662f\u6b63\u786e\u7684\u3002<\/li>\n\n\n\n<li>\u552f\u4e00\u7ea6\u675f\u5e94\u8be5\u5e94\u7528\u5728\u9700\u8981\u552f\u4e00\u503c\u7684\u5217\u4e0a\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u4e3b\u952e\u3001\u5916\u952e\u548c\u552f\u4e00\u7ea6\u675f\u662f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7528\u4e8e\u4fdd\u8bc1\u6570\u636e\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u7684\u91cd\u8981\u7ea6\u675f\u6761\u4ef6\uff0c\u5e94\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u7ea6\u675f\u6761\u4ef6\u6765\u786e\u4fdd\u6570\u636e\u7684\u6b63\u786e\u6027\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u4e8b\u52a1\u7684\u6982\u5ff5\u4e0e\u5c5e\u6027<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u4e8b\u52a1\u662f\u4e00\u7ec4\u76f8\u5173\u7684\u64cd\u4f5c\uff0c\u8fd9\u4e9b\u64cd\u4f5c\u8981\u4e48\u5168\u90e8\u6267\u884c\u6210\u529f\uff0c\u8981\u4e48\u5168\u90e8\u4e0d\u6267\u884c\u3002\u4e8b\u52a1\u5177\u6709ACID\u5c5e\u6027\uff0c\u5373\u539f\u5b50\u6027\u3001\u4e00\u81f4\u6027\u3001\u9694\u79bb\u6027\u548c\u6301\u4e45\u6027\uff0c\u7528\u4e8e\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u4ee5\u4e0b\u662f\u4e8b\u52a1\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u539f\u5b50\u6027\uff08Atomicity\uff09\u539f\u5b50\u6027\u662f\u6307\u4e8b\u52a1\u662f\u4e00\u4e2a\u4e0d\u53ef\u5206\u5272\u7684\u5de5\u4f5c\u5355\u5143\uff0c\u4e8b\u52a1\u4e2d\u7684\u6240\u6709\u64cd\u4f5c\u8981\u4e48\u5168\u90e8\u6267\u884c\u6210\u529f\uff0c\u8981\u4e48\u5168\u90e8\u4e0d\u6267\u884c\u3002\u5982\u679c\u5728\u4e8b\u52a1\u6267\u884c\u8fc7\u7a0b\u4e2d\u53d1\u751f\u4e86\u9519\u8bef\uff0c\u6240\u6709\u5df2\u7ecf\u6267\u884c\u7684\u64cd\u4f5c\u90fd\u5c06\u88ab\u64a4\u6d88\uff0c\u6570\u636e\u5e93\u56de\u6eda\u5230\u4e8b\u52a1\u5f00\u59cb\u4e4b\u524d\u7684\u72b6\u6001\u3002\u8fd9\u786e\u4fdd\u4e86\u6570\u636e\u5e93\u59cb\u7ec8\u5904\u4e8e\u4e00\u81f4\u7684\u72b6\u6001\uff0c\u5373\u4f7f\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u53d1\u751f\u4e86\u6545\u969c\u6216\u9519\u8bef\u3002<\/li>\n\n\n\n<li>\u4e00\u81f4\u6027\uff08Consistency\uff09\u4e00\u81f4\u6027\u662f\u6307\u4e8b\u52a1\u6267\u884c\u540e\uff0c\u6570\u636e\u5e93\u4ece\u4e00\u4e2a\u4e00\u81f4\u7684\u72b6\u6001\u8f6c\u6362\u5230\u53e6\u4e00\u4e2a\u4e00\u81f4\u7684\u72b6\u6001\u3002\u5728\u4e8b\u52a1\u6267\u884c\u4e4b\u524d\uff0c\u6570\u636e\u5e93\u7684\u72b6\u6001\u53ef\u80fd\u662f\u4e0d\u4e00\u81f4\u7684\uff0c\u4f46\u5728\u4e8b\u52a1\u6267\u884c\u5b8c\u6210\u540e\uff0c\u6570\u636e\u5e93\u7684\u72b6\u6001\u5e94\u8be5\u7b26\u5408\u6240\u6709\u7684\u7ea6\u675f\u6761\u4ef6\u3002\u5982\u679c\u4e8b\u52a1\u7684\u6267\u884c\u8fdd\u53cd\u4e86\u4efb\u4f55\u7ea6\u675f\u6761\u4ef6\uff0c\u4e8b\u52a1\u5c06\u88ab\u56de\u6eda\u5230\u4e8b\u52a1\u5f00\u59cb\u4e4b\u524d\u7684\u72b6\u6001\u3002<\/li>\n\n\n\n<li>\u9694\u79bb\u6027\uff08Isolation\uff09\u9694\u79bb\u6027\u662f\u6307\u5728\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8fdb\u884c\u7684\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e2a\u4e8b\u52a1\u5bf9\u6570\u636e\u7684\u4fee\u6539\u90fd\u5e94\u8be5\u76f8\u4e92\u72ec\u7acb\u3002\u6bcf\u4e2a\u4e8b\u52a1\u5e94\u8be5\u611f\u89c9\u4e0d\u5230\u5176\u4ed6\u4e8b\u52a1\u7684\u5b58\u5728\u3002\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u4e8b\u52a1\u5e94\u8be5\u6309\u7167\u4e00\u5b9a\u7684\u9694\u79bb\u7ea7\u522b\u8fdb\u884c\u64cd\u4f5c\u3002\u9694\u79bb\u7ea7\u522b\u8d8a\u9ad8\uff0c\u4e8b\u52a1\u4e4b\u95f4\u7684\u5f71\u54cd\u5c31\u8d8a\u5c0f\uff0c\u4f46\u5e76\u53d1\u6027\u5c31\u8d8a\u4f4e\u3002<\/li>\n\n\n\n<li>\u6301\u4e45\u6027\uff08Durability\uff09\u6301\u4e45\u6027\u662f\u6307\u5728\u4e8b\u52a1\u5b8c\u6210\u540e\uff0c\u6240\u6709\u5bf9\u6570\u636e\u5e93\u7684\u4fee\u6539\u90fd\u5e94\u8be5\u6c38\u4e45\u4fdd\u5b58\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u5373\u4f7f\u5728\u7cfb\u7edf\u6545\u969c\u7684\u60c5\u51b5\u4e0b\u3002\u7cfb\u7edf\u6545\u969c\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u4e22\u5931\uff0c\u4f46\u4e8b\u52a1\u63d0\u4ea4\u540e\u7684\u6570\u636e\u5e94\u8be5\u662f\u6301\u4e45\u7684\uff0c\u4e0d\u4f1a\u56e0\u4e3a\u7cfb\u7edf\u6545\u969c\u800c\u4e22\u5931\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u4e8b\u52a1\u662f\u4e00\u7ec4\u76f8\u5173\u7684\u64cd\u4f5c\uff0c\u5177\u6709ACID\u5c5e\u6027\uff0c\u7528\u4e8e\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u4e8b\u52a1\u5e94\u8be5\u6309\u7167\u4e00\u5b9a\u7684\u9694\u79bb\u7ea7\u522b\u8fdb\u884c\u64cd\u4f5c\uff0c\u4ee5\u786e\u4fdd\u4e8b\u52a1\u4e4b\u95f4\u7684\u76f8\u4e92\u72ec\u7acb\u6027\u548c\u5e76\u53d1\u6027\u3002\u6570\u636e\u5e93\u7cfb\u7edf\u5e94\u8be5\u63d0\u4f9b\u53ef\u9760\u7684\u673a\u5236\uff0c\u4ee5\u786e\u4fdd\u4e8b\u52a1\u7684\u539f\u5b50\u6027\u3001\u4e00\u81f4\u6027\u3001\u9694\u79bb\u6027\u548c\u6301\u4e45\u6027\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6jeishi\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u662f\u6307\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8fdb\u884c\u65f6\uff0c\u6bcf\u4e2a\u4e8b\u52a1\u80fd\u591f\u8bfb\u53d6\u548c\u4fee\u6539\u5176\u4ed6\u4e8b\u52a1\u7684\u6570\u636e\u7684\u7a0b\u5ea6\u3002\u6570\u636e\u5e93\u4e2d\u5b9a\u4e49\u4e86\u56db\u79cd\u6807\u51c6\u7684\u9694\u79bb\u7ea7\u522b\uff0c\u5b83\u4eec\u5206\u522b\u662f\uff1a\u672a\u63d0\u4ea4\u8bfb\uff08Read uncommitted\uff09\u3001\u63d0\u4ea4\u8bfb\uff08Read committed\uff09\u3001\u53ef\u91cd\u590d\u8bfb\uff08Repeatable read\uff09\u548c\u4e32\u884c\u5316\uff08Serializable\uff09\u3002\u4ee5\u4e0b\u662f\u6bcf\u4e2a\u9694\u79bb\u7ea7\u522b\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u672a\u63d0\u4ea4\u8bfb\uff08Read uncommitted\uff09\u672a\u63d0\u4ea4\u8bfb\u662f\u6700\u4f4e\u7684\u9694\u79bb\u7ea7\u522b\u3002\u5728\u8be5\u9694\u79bb\u7ea7\u522b\u4e0b\uff0c\u4e00\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u8bfb\u53d6\u5176\u4ed6\u4e8b\u52a1\u672a\u63d0\u4ea4\u7684\u6570\u636e\u3002\u8fd9\u6837\u53ef\u80fd\u5bfc\u81f4\u8bfb\u53d6\u810f\u6570\u636e\uff0c\u5373\u8bfb\u53d6\u5230\u5176\u4ed6\u4e8b\u52a1\u5df2\u7ecf\u4fee\u6539\u4f46\u672a\u63d0\u4ea4\u7684\u6570\u636e\u3002\u540c\u65f6\uff0c\u4e00\u4e2a\u4e8b\u52a1\u4e5f\u53ef\u4ee5\u4fee\u6539\u5176\u4ed6\u4e8b\u52a1\u672a\u63d0\u4ea4\u7684\u6570\u636e\uff0c\u8fd9\u6837\u53ef\u80fd\u5bfc\u81f4\u4e22\u5931\u66f4\u65b0\u3002<\/li>\n\n\n\n<li>\u63d0\u4ea4\u8bfb\uff08Read committed\uff09\u63d0\u4ea4\u8bfb\u662f\u9ed8\u8ba4\u7684\u9694\u79bb\u7ea7\u522b\u3002\u5728\u8be5\u9694\u79bb\u7ea7\u522b\u4e0b\uff0c\u4e00\u4e2a\u4e8b\u52a1\u53ea\u80fd\u8bfb\u53d6\u5176\u4ed6\u4e8b\u52a1\u5df2\u7ecf\u63d0\u4ea4\u7684\u6570\u636e\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u8bfb\u53d6\u810f\u6570\u636e\uff0c\u4f46\u53ef\u80fd\u4f1a\u51fa\u73b0\u4e0d\u53ef\u91cd\u590d\u8bfb\u548c\u5e7b\u8bfb\u95ee\u9898\u3002\u4e0d\u53ef\u91cd\u590d\u8bfb\u6307\u7684\u662f\u5728\u540c\u4e00\u4e2a\u4e8b\u52a1\u4e2d\uff0c\u8bfb\u53d6\u540c\u4e00\u4e2a\u6570\u636e\u4e24\u6b21\u65f6\uff0c\u5f97\u5230\u7684\u7ed3\u679c\u4e0d\u4e00\u6837\u3002\u5e7b\u8bfb\u6307\u7684\u662f\u5728\u540c\u4e00\u4e2a\u4e8b\u52a1\u4e2d\uff0c\u6267\u884c\u540c\u4e00\u4e2a\u67e5\u8be2\u8bed\u53e5\u4e24\u6b21\u65f6\uff0c\u5f97\u5230\u7684\u7ed3\u679c\u96c6\u4e0d\u4e00\u6837\u3002<\/li>\n\n\n\n<li>\u53ef\u91cd\u590d\u8bfb\uff08Repeatable read\uff09\u53ef\u91cd\u590d\u8bfb\u662f\u4e00\u79cd\u6bd4\u63d0\u4ea4\u8bfb\u66f4\u4e25\u683c\u7684\u9694\u79bb\u7ea7\u522b\u3002\u5728\u8be5\u9694\u79bb\u7ea7\u522b\u4e0b\uff0c\u4e00\u4e2a\u4e8b\u52a1\u5728\u6267\u884c\u671f\u95f4\u8bfb\u53d6\u7684\u6240\u6709\u6570\u636e\u90fd\u662f\u4e00\u81f4\u7684\uff0c\u5373\u4e0d\u4f1a\u51fa\u73b0\u4e0d\u53ef\u91cd\u590d\u8bfb\u7684\u95ee\u9898\u3002\u4f46\u53ef\u80fd\u4f1a\u51fa\u73b0\u5e7b\u8bfb\u95ee\u9898\uff0c\u56e0\u4e3a\u5176\u4ed6\u4e8b\u52a1\u53ef\u80fd\u63d2\u5165\u65b0\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u4e32\u884c\u5316\uff08Serializable\uff09\u4e32\u884c\u5316\u662f\u6700\u9ad8\u7684\u9694\u79bb\u7ea7\u522b\u3002\u5728\u8be5\u9694\u79bb\u7ea7\u522b\u4e0b\uff0c\u6240\u6709\u4e8b\u52a1\u90fd\u88ab\u4e32\u884c\u6267\u884c\uff0c\u6bcf\u4e2a\u4e8b\u52a1\u53ea\u80fd\u8bfb\u53d6\u548c\u4fee\u6539\u5176\u4ed6\u4e8b\u52a1\u5df2\u7ecf\u63d0\u4ea4\u7684\u6570\u636e\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u6240\u6709\u5e76\u53d1\u95ee\u9898\uff0c\u4f46\u4f1a\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\u7528\u4e8e\u63a7\u5236\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8fdb\u884c\u65f6\uff0c\u6bcf\u4e2a\u4e8b\u52a1\u5bf9\u6570\u636e\u7684\u8bfb\u53d6\u548c\u4fee\u6539\u7684\u7a0b\u5ea6\u3002\u4e0d\u540c\u7684\u9694\u79bb\u7ea7\u522b\u53ef\u4ee5\u89e3\u51b3\u4e0d\u540c\u7684\u5e76\u53d1\u95ee\u9898\uff0c\u4f46\u4e5f\u53ef\u80fd\u4f1a\u5f15\u5165\u65b0\u7684\u95ee\u9898\u3002\u5728\u9009\u62e9\u9694\u79bb\u7ea7\u522b\u65f6\uff0c\u5e94\u8be5\u6839\u636e\u5177\u4f53\u7684\u4e1a\u52a1\u9700\u6c42\u548c\u7cfb\u7edf\u73af\u5883\u6765\u51b3\u5b9a\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u4e8b\u52a1\u63a7\u5236\u8bed\u53e5\uff08BEGIN\u3001COMMIT\u3001ROLLBACK\uff09<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u4e8b\u52a1\u63a7\u5236\u8bed\u53e5\u7528\u4e8e\u63a7\u5236\u4e8b\u52a1\u7684\u5f00\u59cb\u3001\u63d0\u4ea4\u548c\u56de\u6eda\u3002\u4e8b\u52a1\u63a7\u5236\u8bed\u53e5\u5305\u62ecBEGIN\u3001COMMIT\u548cROLLBACK\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>BEGIN\u8bed\u53e5BEGIN\u8bed\u53e5\u7528\u4e8e\u5f00\u59cb\u4e00\u4e2a\u65b0\u7684\u4e8b\u52a1\u3002\u5728BEGIN\u8bed\u53e5\u4e4b\u540e\u7684\u6240\u6709SQL\u8bed\u53e5\u90fd\u5c06\u88ab\u89c6\u4e3a\u4e00\u4e2a\u4e8b\u52a1\u7684\u4e00\u90e8\u5206\uff0c\u76f4\u5230COMMIT\u6216ROLLBACK\u8bed\u53e5\u88ab\u6267\u884c\u3002\u5728\u4e8b\u52a1\u5f00\u59cb\u4e4b\u524d\uff0c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u53ef\u80fd\u5904\u4e8e\u4e0d\u4e00\u81f4\u7684\u72b6\u6001\uff0c\u4f46\u5728\u4e8b\u52a1\u7ed3\u675f\u4e4b\u540e\uff0c\u6570\u636e\u5e93\u5e94\u8be5\u662f\u4e00\u81f4\u7684\u72b6\u6001\u3002<\/li>\n\n\n\n<li>COMMIT\u8bed\u53e5COMMIT\u8bed\u53e5\u7528\u4e8e\u63d0\u4ea4\u4e00\u4e2a\u4e8b\u52a1\uff0c\u5e76\u5c06\u6240\u6709\u5bf9\u6570\u636e\u5e93\u7684\u4fee\u6539\u6c38\u4e45\u4fdd\u5b58\u5728\u6570\u636e\u5e93\u4e2d\u3002\u5728COMMIT\u8bed\u53e5\u6267\u884c\u4e4b\u524d\uff0c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u5904\u4e8e\u672a\u63d0\u4ea4\u72b6\u6001\uff0c\u8fd9\u4e9b\u6570\u636e\u4ec5\u5bf9\u5f53\u524d\u4e8b\u52a1\u53ef\u89c1\u3002\u5728\u6267\u884cCOMMIT\u8bed\u53e5\u4e4b\u540e\uff0c\u8fd9\u4e9b\u6570\u636e\u5c06\u5bf9\u5176\u4ed6\u4e8b\u52a1\u53ef\u89c1\uff0c\u4e14\u5b83\u4eec\u88ab\u8ba4\u4e3a\u662f\u6c38\u4e45\u4fdd\u5b58\u7684\u3002<\/li>\n\n\n\n<li>ROLLBACK\u8bed\u53e5ROLLBACK\u8bed\u53e5\u7528\u4e8e\u56de\u6eda\u4e00\u4e2a\u4e8b\u52a1\uff0c\u5373\u5c06\u6240\u6709\u5bf9\u6570\u636e\u5e93\u7684\u4fee\u6539\u64a4\u6d88\uff0c\u5e76\u5c06\u6570\u636e\u5e93\u6062\u590d\u5230\u4e8b\u52a1\u5f00\u59cb\u4e4b\u524d\u7684\u72b6\u6001\u3002\u5728\u6267\u884cROLLBACK\u8bed\u53e5\u4e4b\u540e\uff0c\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u5e94\u8be5\u662f\u4e00\u81f4\u7684\u72b6\u6001\u3002\u5982\u679c\u4e00\u4e2a\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u53d1\u751f\u4e86\u9519\u8bef\uff0c\u53ef\u4ee5\u4f7f\u7528ROLLBACK\u8bed\u53e5\u6765\u64a4\u6d88\u5bf9\u6570\u636e\u5e93\u7684\u4fee\u6539\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4e8b\u52a1\u63a7\u5236\u8bed\u53e5\u53ef\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0c\u5e76\u9632\u6b62\u591a\u4e2a\u4e8b\u52a1\u4e4b\u95f4\u7684\u51b2\u7a81\u3002\u5f53\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8fdb\u884c\u65f6\uff0c\u4e8b\u52a1\u63a7\u5236\u8bed\u53e5\u53ef\u4ee5\u63a7\u5236\u6bcf\u4e2a\u4e8b\u52a1\u5bf9\u6570\u636e\u5e93\u7684\u4fee\u6539\uff0c\u5e76\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u5e94\u8be5\u6839\u636e\u5177\u4f53\u7684\u4e1a\u52a1\u9700\u6c42\u548c\u7cfb\u7edf\u73af\u5883\uff0c\u9009\u62e9\u5408\u9002\u7684\u9694\u79bb\u7ea7\u522b\u548c\u4e8b\u52a1\u63a7\u5236\u8bed\u53e5\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u6b63\u786e\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u9501\u5b9a\u673a\u5236\u4e0e\u9501\u7c7b\u578b<\/p>\n\n\n\n<p>\u5728\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\uff0c\u9501\u662f\u4e00\u79cd\u7528\u4e8e\u7ba1\u7406\u5e76\u53d1\u8bbf\u95ee\u7684\u673a\u5236\uff0c\u5b83\u53ef\u4ee5\u63a7\u5236\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u4efd\u6570\u636e\u7684\u65b9\u5f0f\u3002\u5f53\u4e00\u4e2a\u4e8b\u52a1\u6b63\u5728\u4fee\u6539\u6570\u636e\u65f6\uff0c\u5176\u4ed6\u4e8b\u52a1\u53ef\u80fd\u4f1a\u8bfb\u53d6\u6216\u4fee\u6539\u540c\u4e00\u4efd\u6570\u636e\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u3002\u9501\u7684\u4f5c\u7528\u5c31\u662f\u63a7\u5236\u591a\u4e2a\u4e8b\u52a1\u5bf9\u540c\u4e00\u4efd\u6570\u636e\u7684\u5e76\u53d1\u8bbf\u95ee\uff0c\u4ee5\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n\n\n\n<p>\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u6709\u4e24\u79cd\u57fa\u672c\u7684\u9501\u7c7b\u578b\uff1a\u5171\u4eab\u9501\u548c\u6392\u4ed6\u9501\u3002\u5171\u4eab\u9501\u5141\u8bb8\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8bfb\u53d6\u540c\u4e00\u4efd\u6570\u636e\uff0c\u4f46\u53ea\u5141\u8bb8\u4e00\u4e2a\u4e8b\u52a1\u4fee\u6539\u6570\u636e\u3002\u6392\u4ed6\u9501\u5219\u5141\u8bb8\u4e00\u4e2a\u4e8b\u52a1\u72ec\u5360\u4e00\u4efd\u6570\u636e\uff0c\u5176\u4ed6\u4e8b\u52a1\u4e0d\u80fd\u8bfb\u53d6\u6216\u4fee\u6539\u8be5\u4efd\u6570\u636e\uff0c\u76f4\u5230\u9501\u91ca\u653e\u3002<\/p>\n\n\n\n<p>\u9664\u4e86\u5171\u4eab\u9501\u548c\u6392\u4ed6\u9501\uff0c\u8fd8\u6709\u5176\u4ed6\u7c7b\u578b\u7684\u9501\uff0c\u5982\u610f\u5411\u9501\u3001\u884c\u7ea7\u9501\u3001\u8868\u7ea7\u9501\u7b49\u3002\u6bcf\u79cd\u9501\u7c7b\u578b\u90fd\u6709\u5176\u7279\u5b9a\u7684\u7528\u9014\u548c\u4f18\u7f3a\u70b9\u3002\u4ee5\u4e0b\u662f\u5e38\u89c1\u7684\u9501\u7c7b\u578b\u53ca\u5176\u8bf4\u660e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5171\u4eab\u9501\uff08Shared Lock\uff09\u5171\u4eab\u9501\u7528\u4e8e\u63a7\u5236\u5e76\u53d1\u8bfb\u53d6\u6570\u636e\u3002\u5f53\u4e00\u4e2a\u4e8b\u52a1\u83b7\u5f97\u4e00\u4e2a\u5171\u4eab\u9501\u65f6\uff0c\u5176\u4ed6\u4e8b\u52a1\u4e5f\u53ef\u4ee5\u83b7\u5f97\u5171\u4eab\u9501\uff0c\u4f46\u4e0d\u80fd\u83b7\u5f97\u6392\u4ed6\u9501\u3002\u591a\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u540c\u65f6\u6301\u6709\u5171\u4eab\u9501\uff0c\u4f46\u53ea\u6709\u4e00\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u6301\u6709\u6392\u4ed6\u9501\u3002<\/li>\n\n\n\n<li>\u6392\u4ed6\u9501\uff08Exclusive Lock\uff09\u6392\u4ed6\u9501\u7528\u4e8e\u63a7\u5236\u5e76\u53d1\u4fee\u6539\u6570\u636e\u3002\u5f53\u4e00\u4e2a\u4e8b\u52a1\u83b7\u5f97\u4e00\u4e2a\u6392\u4ed6\u9501\u65f6\uff0c\u5176\u4ed6\u4e8b\u52a1\u4e0d\u80fd\u83b7\u5f97\u5171\u4eab\u9501\u6216\u6392\u4ed6\u9501\u3002\u53ea\u6709\u4e00\u4e2a\u4e8b\u52a1\u53ef\u4ee5\u6301\u6709\u6392\u4ed6\u9501\u3002<\/li>\n\n\n\n<li>\u884c\u7ea7\u9501\uff08Row-level Lock\uff09\u884c\u7ea7\u9501\u7528\u4e8e\u63a7\u5236\u5bf9\u6570\u636e\u884c\u7684\u5e76\u53d1\u8bbf\u95ee\u3002\u5f53\u4e00\u4e2a\u4e8b\u52a1\u83b7\u5f97\u4e00\u4e2a\u884c\u7ea7\u9501\u65f6\uff0c\u5176\u4ed6\u4e8b\u52a1\u4e0d\u80fd\u83b7\u5f97\u76f8\u540c\u884c\u7684\u6392\u4ed6\u9501\u6216\u5171\u4eab\u9501\uff0c\u4f46\u53ef\u4ee5\u83b7\u5f97\u4e0d\u540c\u884c\u7684\u9501\u3002\u884c\u7ea7\u9501\u53ef\u4ee5\u63d0\u9ad8\u5e76\u53d1\u6027\uff0c\u4f46\u4f1a\u589e\u52a0\u9501\u7684\u5f00\u9500\u3002<\/li>\n\n\n\n<li>\u8868\u7ea7\u9501\uff08Table-level Lock\uff09\u8868\u7ea7\u9501\u7528\u4e8e\u63a7\u5236\u5bf9\u6574\u4e2a\u8868\u7684\u5e76\u53d1\u8bbf\u95ee\u3002\u5f53\u4e00\u4e2a\u4e8b\u52a1\u83b7\u5f97\u4e00\u4e2a\u8868\u7ea7\u9501\u65f6\uff0c\u5176\u4ed6\u4e8b\u52a1\u4e0d\u80fd\u83b7\u5f97\u76f8\u540c\u8868\u7684\u6392\u4ed6\u9501\u6216\u5171\u4eab\u9501\uff0c\u4f46\u53ef\u4ee5\u83b7\u5f97\u4e0d\u540c\u8868\u7684\u9501\u3002\u8868\u7ea7\u9501\u53ef\u4ee5\u63d0\u9ad8\u5e76\u53d1\u6027\uff0c\u4f46\u4f1a\u5f71\u54cd\u7cfb\u7edf\u7684\u53ef\u7528\u6027\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u9501\u5b9a\u673a\u5236\u662f\u4e00\u79cd\u7528\u4e8e\u7ba1\u7406\u5e76\u53d1\u8bbf\u95ee\u7684\u673a\u5236\uff0c\u5b83\u53ef\u4ee5\u63a7\u5236\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u8bbf\u95ee\u540c\u4e00\u4efd\u6570\u636e\u7684\u65b9\u5f0f\u3002\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u5e38\u89c1\u7684\u9501\u7c7b\u578b\u5305\u62ec\u5171\u4eab\u9501\u3001\u6392\u4ed6\u9501\u3001\u884c\u7ea7\u9501\u548c\u8868\u7ea7\u9501\u7b49\u3002\u4e0d\u540c\u7684\u9501\u7c7b\u578b\u53ef\u4ee5\u89e3\u51b3\u4e0d\u540c\u7684\u5e76\u53d1\u95ee\u9898\uff0c\u4f46\u4e5f\u53ef\u80fd\u4f1a\u5f15\u5165\u65b0\u7684\u95ee\u9898\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5e94\u8be5<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u51fd\u6570\u7684\u6982\u5ff5\u4e0e\u521b\u5efa<\/p>\n\n\n\n<p>\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u51fd\u6570\u662f\u4e00\u7ec4SQL\u8bed\u53e5\u7684\u96c6\u5408\uff0c\u5b83\u4eec\u88ab\u5c01\u88c5\u4e3a\u4e00\u4e2a\u53ef\u91cd\u7528\u7684\u7a0b\u5e8f\u5355\u5143\uff0c\u5e76\u5728\u9700\u8981\u7684\u65f6\u5019\u8fdb\u884c\u8c03\u7528\u3002\u51fd\u6570\u901a\u5e38\u7528\u4e8e\u7b80\u5316\u590d\u6742\u7684SQL\u67e5\u8be2\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u6027\u80fd\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u6570\u636e\u5e93\u4e2d\u7684\u51fd\u6570\u7c7b\u4f3c\u4e8e\u7f16\u7a0b\u8bed\u8a00\u4e2d\u7684\u51fd\u6570\uff0c\u5b83\u4eec\u53ef\u4ee5\u63a5\u53d7\u53c2\u6570\u5e76\u8fd4\u56de\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>\u51fd\u6570\u901a\u5e38\u5177\u6709\u4ee5\u4e0b\u7279\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8f93\u5165\u53c2\u6570\uff1a\u51fd\u6570\u53ef\u4ee5\u63a5\u53d7\u96f6\u4e2a\u6216\u591a\u4e2a\u53c2\u6570\uff0c\u5e76\u5728\u51fd\u6570\u5185\u90e8\u5bf9\u8fd9\u4e9b\u53c2\u6570\u8fdb\u884c\u5904\u7406\u3002\u53c2\u6570\u53ef\u4ee5\u662f\u5e38\u91cf\u3001\u8868\u8fbe\u5f0f\u3001\u5217\u540d\u7b49\u3002<\/li>\n\n\n\n<li>\u8f93\u51fa\u7ed3\u679c\uff1a\u51fd\u6570\u53ef\u4ee5\u8fd4\u56de\u5355\u4e2a\u503c\u6216\u591a\u4e2a\u503c\u3002\u8fd4\u56de\u503c\u53ef\u4ee5\u662f\u6807\u91cf\u503c\u3001\u8868\u3001\u6e38\u6807\u7b49\u3002<\/li>\n\n\n\n<li>\u53ef\u91cd\u7528\u6027\uff1a\u51fd\u6570\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u67e5\u8be2\u4e2d\u88ab\u591a\u6b21\u8c03\u7528\uff0c\u4ece\u800c\u907f\u514d\u91cd\u590d\u7684\u4ee3\u7801\u3002<\/li>\n\n\n\n<li>\u5c01\u88c5\u6027\uff1a\u51fd\u6570\u53ef\u4ee5\u5c01\u88c5\u4e00\u7ec4SQL\u8bed\u53e5\uff0c\u4ece\u800c\u4f7f\u67e5\u8be2\u66f4\u52a0\u7b80\u6d01\u3001\u6e05\u6670\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u521b\u5efa\u51fd\u6570\u901a\u5e38\u9700\u8981\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5b9a\u4e49\u51fd\u6570\uff1a\u5b9a\u4e49\u51fd\u6570\u7684\u540d\u79f0\u3001\u53c2\u6570\u5217\u8868\u3001\u8fd4\u56de\u503c\u7c7b\u578b\u7b49\u3002\u5728PostgreSQL\u4e2d\uff0c\u51fd\u6570\u7684\u5b9a\u4e49\u901a\u5e38\u4f7f\u7528CREATE FUNCTION\u8bed\u53e5\u3002<\/li>\n\n\n\n<li>\u7f16\u5199\u51fd\u6570\u4f53\uff1a\u7f16\u5199\u51fd\u6570\u7684SQL\u8bed\u53e5\uff0c\u5305\u62ec\u67e5\u8be2\u8bed\u53e5\u3001\u63a7\u5236\u8bed\u53e5\u7b49\u3002<\/li>\n\n\n\n<li>\u7f16\u8bd1\u51fd\u6570\uff1a\u5c06\u51fd\u6570\u4f53\u7f16\u8bd1\u6210\u53ef\u6267\u884c\u7684\u4ee3\u7801\u3002<\/li>\n\n\n\n<li>\u5b58\u50a8\u51fd\u6570\uff1a\u5c06\u7f16\u8bd1\u540e\u7684\u4ee3\u7801\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u4ee5\u4fbf\u5728\u9700\u8981\u7684\u65f6\u5019\u8c03\u7528\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u521b\u5efa\u4e00\u4e2a\u8fd4\u56de\u4e24\u4e2a\u6574\u6570\u4e4b\u548c\u7684\u51fd\u6570\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">sqlCopy code<code>CREATE FUNCTION add_numbers(a INTEGER, b INTEGER)\nRETURNS INTEGER AS $$\nBEGIN\n  RETURN a + b;\nEND;\n$$ LANGUAGE plpgsql;\n<\/code><\/pre>\n\n\n\n<p>\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u51fd\u6570\u540d\u4e3aadd_numbers\uff0c\u5b83\u63a5\u53d7\u4e24\u4e2a\u6574\u6570a\u548cb\u4f5c\u4e3a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u5b83\u4eec\u7684\u548c\u3002\u51fd\u6570\u4f7f\u7528PL\/pgSQL\u8bed\u8a00\u7f16\u5199\uff0c\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u8bed\u8a00\u5982PL\/Python\u3001PL\/Perl\u3001PL\/Tcl\u7b49\u6765\u7f16\u5199\u3002<\/p>\n\n\n\n<p>\u603b\u4e4b\uff0c\u51fd\u6570\u662f\u4e00\u7ec4SQL\u8bed\u53e5\u7684\u96c6\u5408\uff0c\u5b83\u4eec\u88ab\u5c01\u88c5\u4e3a\u4e00\u4e2a\u53ef\u91cd\u7528\u7684\u7a0b\u5e8f\u5355\u5143\uff0c\u5e76\u5728\u9700\u8981\u7684\u65f6\u5019\u8fdb\u884c\u8c03\u7528\u3002\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u521b\u5efa\u51fd\u6570\u901a\u5e38\u9700\u8981\u5b9a\u4e49\u51fd\u6570\u3001\u7f16\u5199\u51fd\u6570\u4f53\u3001\u7f16\u8bd1\u51fd\u6570\u548c\u5b58\u50a8\u51fd\u6570\u7b49\u6b65\u9aa4\u3002\u51fd\u6570\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u7684\u53ef\u7ef4\u62a4\u6027\u3001\u53ef\u8bfb\u6027\u548c\u6027\u80fd\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5b58\u50a8\u8fc7\u7a0b\u7684\u6982\u5ff5\u4e0e\u521b\u5efa<\/p>\n\n\n\n<p>\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u5b58\u50a8\u8fc7\u7a0b\u662f\u4e00\u7ec4SQL\u8bed\u53e5\u7684\u96c6\u5408\uff0c\u5b83\u4eec\u88ab\u5c01\u88c5\u4e3a\u4e00\u4e2a\u53ef\u91cd\u7528\u7684\u7a0b\u5e8f\u5355\u5143\uff0c\u53ef\u4ee5\u5728\u9700\u8981\u7684\u65f6\u5019\u8fdb\u884c\u8c03\u7528\u3002\u5b58\u50a8\u8fc7\u7a0b\u901a\u5e38\u7528\u4e8e\u6267\u884c\u590d\u6742\u7684\u6570\u636e\u64cd\u4f5c\u3001\u6279\u5904\u7406\u64cd\u4f5c\u3001\u4e8b\u52a1\u63a7\u5236\u7b49\u3002\u5b58\u50a8\u8fc7\u7a0b\u53ef\u4ee5\u770b\u4f5c\u662f\u6570\u636e\u5e93\u4e2d\u7684\u4e00\u79cd\u7a0b\u5e8f\uff0c\u5b83\u53ef\u4ee5\u63a5\u53d7\u53c2\u6570\u5e76\u8fd4\u56de\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>\u5b58\u50a8\u8fc7\u7a0b\u5177\u6709\u4ee5\u4e0b\u7279\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8f93\u5165\u53c2\u6570\uff1a\u5b58\u50a8\u8fc7\u7a0b\u53ef\u4ee5\u63a5\u53d7\u96f6\u4e2a\u6216\u591a\u4e2a\u53c2\u6570\uff0c\u5e76\u5728\u5b58\u50a8\u8fc7\u7a0b\u5185\u90e8\u5bf9\u8fd9\u4e9b\u53c2\u6570\u8fdb\u884c\u5904\u7406\u3002\u53c2\u6570\u53ef\u4ee5\u662f\u5e38\u91cf\u3001\u8868\u8fbe\u5f0f\u3001\u5217\u540d\u7b49\u3002<\/li>\n\n\n\n<li>\u8f93\u51fa\u7ed3\u679c\uff1a\u5b58\u50a8\u8fc7\u7a0b\u53ef\u4ee5\u8fd4\u56de\u5355\u4e2a\u503c\u6216\u591a\u4e2a\u503c\u3002\u8fd4\u56de\u503c\u53ef\u4ee5\u662f\u6807\u91cf\u503c\u3001\u8868\u3001\u6e38\u6807\u7b49\u3002<\/li>\n\n\n\n<li>\u53ef\u91cd\u7528\u6027\uff1a\u5b58\u50a8\u8fc7\u7a0b\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u67e5\u8be2\u4e2d\u88ab\u591a\u6b21\u8c03\u7528\uff0c\u4ece\u800c\u907f\u514d\u91cd\u590d\u7684\u4ee3\u7801\u3002<\/li>\n\n\n\n<li>\u5c01\u88c5\u6027\uff1a\u5b58\u50a8\u8fc7\u7a0b\u53ef\u4ee5\u5c01\u88c5\u4e00\u7ec4SQL\u8bed\u53e5\uff0c\u4ece\u800c\u4f7f\u67e5\u8be2\u66f4\u52a0\u7b80\u6d01\u3001\u6e05\u6670\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u521b\u5efa\u5b58\u50a8\u8fc7\u7a0b\u901a\u5e38\u9700\u8981\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5b9a\u4e49\u5b58\u50a8\u8fc7\u7a0b\uff1a\u5b9a\u4e49\u5b58\u50a8\u8fc7\u7a0b\u7684\u540d\u79f0\u3001\u53c2\u6570\u5217\u8868\u3001\u8fd4\u56de\u503c\u7c7b\u578b\u7b49\u3002\u5728PostgreSQL\u4e2d\uff0c\u5b58\u50a8\u8fc7\u7a0b\u7684\u5b9a\u4e49\u901a\u5e38\u4f7f\u7528CREATE PROCEDURE\u8bed\u53e5\u3002<\/li>\n\n\n\n<li>\u7f16\u5199\u5b58\u50a8\u8fc7\u7a0b\u4f53\uff1a\u7f16\u5199\u5b58\u50a8\u8fc7\u7a0b\u7684SQL\u8bed\u53e5\uff0c\u5305\u62ec\u67e5\u8be2\u8bed\u53e5\u3001\u63a7\u5236\u8bed\u53e5\u7b49\u3002<\/li>\n\n\n\n<li>\u7f16\u8bd1\u5b58\u50a8\u8fc7\u7a0b\uff1a\u5c06\u5b58\u50a8\u8fc7\u7a0b\u4f53\u7f16\u8bd1\u6210\u53ef\u6267\u884c\u7684\u4ee3\u7801\u3002<\/li>\n\n\n\n<li>\u5b58\u50a8\u5b58\u50a8\u8fc7\u7a0b\uff1a\u5c06\u7f16\u8bd1\u540e\u7684\u4ee3\u7801\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u4ee5\u4fbf\u5728\u9700\u8981\u7684\u65f6\u5019\u8c03\u7528\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u521b\u5efa\u4e00\u4e2a\u5b58\u50a8\u8fc7\u7a0b\uff0c\u5b83\u63a5\u53d7\u4e24\u4e2a\u6574\u6570\u4f5c\u4e3a\u53c2\u6570\uff0c\u5c06\u5b83\u4eec\u76f8\u52a0\u5e76\u8fd4\u56de\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">sqlCopy code<code>CREATE PROCEDURE add_numbers(IN a INTEGER, IN b INTEGER, OUT result INTEGER)\nLANGUAGE plpgsql AS\n$$\nBEGIN\n  result := a + b;\nEND;\n$$;\n<\/code><\/pre>\n\n\n\n<p>\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u5b58\u50a8\u8fc7\u7a0b\u540d\u4e3aadd_numbers\uff0c\u5b83\u63a5\u53d7\u4e24\u4e2a\u6574\u6570a\u548cb\u4f5c\u4e3a\u8f93\u5165\u53c2\u6570\uff0c\u5e76\u5c06\u5b83\u4eec\u7684\u548c\u5b58\u50a8\u5728\u540d\u4e3aresult\u7684\u8f93\u51fa\u53c2\u6570\u4e2d\u3002\u5b58\u50a8\u8fc7\u7a0b\u4f7f\u7528PL\/pgSQL\u8bed\u8a00\u7f16\u5199\uff0c\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u8bed\u8a00\u5982PL\/Python\u3001PL\/Perl\u3001PL\/Tcl\u7b49\u6765\u7f16\u5199\u3002<\/p>\n\n\n\n<p>\u603b\u4e4b\uff0c\u5b58\u50a8\u8fc7\u7a0b\u662f\u4e00\u7ec4SQL\u8bed\u53e5\u7684\u96c6\u5408\uff0c\u5b83\u4eec\u88ab\u5c01\u88c5\u4e3a\u4e00\u4e2a\u53ef\u91cd\u7528\u7684\u7a0b\u5e8f\u5355\u5143\uff0c\u5e76\u5728\u9700\u8981\u7684\u65f6\u5019\u8fdb\u884c\u8c03\u7528\u3002\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u521b\u5efa\u5b58\u50a8\u8fc7\u7a0b\u901a\u5e38\u9700\u8981\u5b9a\u4e49\u5b58\u50a8\u8fc7\u7a0b\u3001\u7f16\u5199\u5b58\u50a8\u8fc7\u7a0b\u4f53\u3001\u7f16\u8bd1\u5b58\u50a8\u8fc7\u7a0b\u548c\u5b58\u50a8\u5b58\u50a8\u8fc7\u7a0b\u7b49\u6b65\u9aa4\u3002\u5b58\u50a8\u8fc7\u7a0b\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u7684\u53ef\u7ef4\u62a4\u6027\u3001\u53ef\u8bfb\u6027\u548c\u6027\u80fd\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u89e6\u53d1\u5668\u7684\u6982\u5ff5\u4e0e\u521b\u5efa<\/p>\n\n\n\n<p>\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u89e6\u53d1\u5668\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u5b58\u50a8\u8fc7\u7a0b\uff0c\u5b83\u5728\u7279\u5b9a\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\u81ea\u52a8\u6267\u884c\u3002\u89e6\u53d1\u5668\u53ef\u4ee5\u5728\u6570\u636e\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\u65f6\u89e6\u53d1\uff0c\u4ece\u800c\u6267\u884c\u76f8\u5173\u7684\u64cd\u4f5c\u3002\u5b83\u4eec\u901a\u5e38\u7528\u4e8e\u5b9e\u73b0\u4e1a\u52a1\u89c4\u5219\u3001\u6570\u636e\u5b8c\u6574\u6027\u7ea6\u675f\u7b49\u3002<\/p>\n\n\n\n<p>\u89e6\u53d1\u5668\u5177\u6709\u4ee5\u4e0b\u7279\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e8b\u4ef6\u89e6\u53d1\uff1a\u89e6\u53d1\u5668\u5728\u7279\u5b9a\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\u81ea\u52a8\u6267\u884c\u3002\u4e8b\u4ef6\u53ef\u4ee5\u662f\u6570\u636e\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\u7b49\u3002<\/li>\n\n\n\n<li>\u81ea\u52a8\u6267\u884c\uff1a\u89e6\u53d1\u5668\u81ea\u52a8\u6267\u884c\uff0c\u4e0d\u9700\u8981\u624b\u52a8\u8c03\u7528\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u7ea6\u675f\uff1a\u89e6\u53d1\u5668\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u4e1a\u52a1\u89c4\u5219\u3001\u6570\u636e\u5b8c\u6574\u6027\u7ea6\u675f\u7b49\u3002<\/li>\n\n\n\n<li>\u53ef\u64a4\u9500\u6027\uff1a\u89e6\u53d1\u5668\u53ef\u4ee5\u88ab\u7981\u7528\u6216\u5220\u9664\uff0c\u4ece\u800c\u53d6\u6d88\u5176\u6548\u679c\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u521b\u5efa\u89e6\u53d1\u5668\u901a\u5e38\u9700\u8981\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5b9a\u4e49\u89e6\u53d1\u5668\uff1a\u5b9a\u4e49\u89e6\u53d1\u5668\u7684\u540d\u79f0\u3001\u4e8b\u4ef6\u7c7b\u578b\u3001\u89e6\u53d1\u6761\u4ef6\u7b49\u3002\u5728PostgreSQL\u4e2d\uff0c\u89e6\u53d1\u5668\u7684\u5b9a\u4e49\u901a\u5e38\u4f7f\u7528CREATE TRIGGER\u8bed\u53e5\u3002<\/li>\n\n\n\n<li>\u7f16\u5199\u89e6\u53d1\u5668\u4f53\uff1a\u7f16\u5199\u89e6\u53d1\u5668\u7684SQL\u8bed\u53e5\uff0c\u5305\u62ec\u67e5\u8be2\u8bed\u53e5\u3001\u63a7\u5236\u8bed\u53e5\u7b49\u3002<\/li>\n\n\n\n<li>\u5b58\u50a8\u89e6\u53d1\u5668\uff1a\u5c06\u7f16\u5199\u540e\u7684\u89e6\u53d1\u5668\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u4ee5\u4fbf\u5728\u9700\u8981\u7684\u65f6\u5019\u8c03\u7528\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u521b\u5efa\u4e00\u4e2a\u89e6\u53d1\u5668\uff0c\u5728\u6570\u636e\u63d2\u5165\u65f6\u81ea\u52a8\u66f4\u65b0\u53e6\u4e00\u4e2a\u8868\u7684\u6570\u636e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">sqlCopy code<code>CREATE TRIGGER update_inventory\nAFTER INSERT ON sales\nFOR EACH ROW\nEXECUTE FUNCTION update_inventory();\n<\/code><\/pre>\n\n\n\n<p>\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u89e6\u53d1\u5668\u540d\u4e3aupdate_inventory\uff0c\u5b83\u5728\u6bcf\u6b21\u63d2\u5165sales\u8868\u7684\u6570\u636e\u65f6\u81ea\u52a8\u6267\u884cupdate_inventory\u51fd\u6570\u3002\u6bcf\u4e2a\u63d2\u5165\u7684\u6570\u636e\u884c\u90fd\u4f1a\u89e6\u53d1\u4e00\u6b21\u89e6\u53d1\u5668\u7684\u6267\u884c\u3002<\/p>\n\n\n\n<p>\u603b\u4e4b\uff0c\u89e6\u53d1\u5668\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u5b58\u50a8\u8fc7\u7a0b\uff0c\u5728\u7279\u5b9a\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\u81ea\u52a8\u6267\u884c\u3002\u89e6\u53d1\u5668\u901a\u5e38\u7528\u4e8e\u5b9e\u73b0\u4e1a\u52a1\u89c4\u5219\u3001\u6570\u636e\u5b8c\u6574\u6027\u7ea6\u675f\u7b49\u3002\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u521b\u5efa\u89e6\u53d1\u5668\u901a\u5e38\u9700\u8981\u5b9a\u4e49\u89e6\u53d1\u5668\u3001\u7f16\u5199\u89e6\u53d1\u5668\u4f53\u548c\u5b58\u50a8\u89e6\u53d1\u5668\u7b49\u6b65\u9aa4\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u5907\u4efd\u65b9\u6cd5\u4e0e\u7b56\u7565<\/p>\n\n\n\n<p>\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u5907\u4efd\u662f\u4e00\u9879\u975e\u5e38\u91cd\u8981\u7684\u5de5\u4f5c\u3002\u5907\u4efd\u53ef\u4ee5\u4fdd\u62a4\u6570\u636e\u514d\u53d7\u635f\u574f\u3001\u8bef\u64cd\u4f5c\u3001\u786c\u4ef6\u6545\u969c\u7b49\u4e0d\u53ef\u9884\u89c1\u7684\u60c5\u51b5\u3002\u5728\u5907\u4efd\u6570\u636e\u65f6\uff0c\u9700\u8981\u8003\u8651\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5907\u4efd\u7c7b\u578b\uff1a\u6570\u636e\u5e93\u5907\u4efd\u53ef\u4ee5\u5206\u4e3a\u5168\u5907\u4efd\u3001\u589e\u91cf\u5907\u4efd\u548c\u5dee\u5f02\u5907\u4efd\u3002\u5168\u5907\u4efd\u662f\u5907\u4efd\u6574\u4e2a\u6570\u636e\u5e93\uff1b\u589e\u91cf\u5907\u4efd\u4ec5\u5907\u4efd\u81ea\u4e0a\u6b21\u5907\u4efd\u4ee5\u6765\u66f4\u6539\u7684\u6570\u636e\uff1b\u5dee\u5f02\u5907\u4efd\u5907\u4efd\u81ea\u4e0a\u6b21\u5168\u5907\u4efd\u4ee5\u6765\u66f4\u6539\u7684\u6570\u636e\u3002\u4e0d\u540c\u7684\u5907\u4efd\u7c7b\u578b\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u573a\u666f\uff0c\u9700\u8981\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8fdb\u884c\u9009\u62e9\u3002<\/li>\n\n\n\n<li>\u5907\u4efd\u9891\u7387\uff1a\u5907\u4efd\u9891\u7387\u53d6\u51b3\u4e8e\u6570\u636e\u7684\u91cd\u8981\u6027\u548c\u53d8\u5316\u9891\u7387\u3002\u5bf9\u4e8e\u975e\u5e38\u91cd\u8981\u7684\u6570\u636e\uff0c\u5efa\u8bae\u8fdb\u884c\u6bcf\u65e5\u5907\u4efd\u3002\u5bf9\u4e8e\u4e0d\u592a\u91cd\u8981\u7684\u6570\u636e\uff0c\u53ef\u4ee5\u6bcf\u5468\u5907\u4efd\u4e00\u6b21\u3002<\/li>\n\n\n\n<li>\u5907\u4efd\u5b58\u50a8\uff1a\u5907\u4efd\u6570\u636e\u9700\u8981\u5b58\u50a8\u5728\u5b89\u5168\u3001\u53ef\u9760\u7684\u4f4d\u7f6e\u3002\u901a\u5e38\u53ef\u4ee5\u5c06\u5907\u4efd\u6570\u636e\u5b58\u50a8\u5728\u78c1\u76d8\u3001\u4e91\u5b58\u50a8\u3001\u5907\u7528\u670d\u52a1\u5668\u7b49\u5730\u65b9\u3002\u9700\u8981\u786e\u4fdd\u5907\u4efd\u6570\u636e\u80fd\u591f\u53ca\u65f6\u6062\u590d\u6570\u636e\uff0c\u907f\u514d\u6570\u636e\u4e22\u5931\u3002<\/li>\n\n\n\n<li>\u5907\u4efd\u6062\u590d\u6d4b\u8bd5\uff1a\u9700\u8981\u5b9a\u671f\u6d4b\u8bd5\u5907\u4efd\u6570\u636e\u662f\u5426\u80fd\u591f\u6210\u529f\u6062\u590d\uff0c\u4ee5\u786e\u4fdd\u5907\u4efd\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u6b63\u786e\u6027\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5728PostgreSQL\u4e2d\uff0c\u5907\u4efd\u6570\u636e\u53ef\u4ee5\u4f7f\u7528pg_dump\u547d\u4ee4\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u5907\u4efd\u65b9\u6cd5\u548c\u7b56\u7565\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5168\u5907\u4efd\uff1a\u4f7f\u7528pg_dump\u547d\u4ee4\u5907\u4efd\u6574\u4e2a\u6570\u636e\u5e93\uff0c\u5e76\u5c06\u5907\u4efd\u6570\u636e\u5b58\u50a8\u5728\u5b89\u5168\u7684\u4f4d\u7f6e\u3002\u5efa\u8bae\u6bcf\u5468\u8fdb\u884c\u4e00\u6b21\u5168\u5907\u4efd\uff0c\u5e76\u5728\u5907\u4efd\u5b8c\u6210\u540e\u5bf9\u5907\u4efd\u6570\u636e\u8fdb\u884c\u6821\u9a8c\u3002<\/li>\n\n\n\n<li>\u589e\u91cf\u5907\u4efd\uff1a\u4f7f\u7528pg_dump\u547d\u4ee4\u5907\u4efd\u81ea\u4e0a\u6b21\u5907\u4efd\u4ee5\u6765\u66f4\u6539\u7684\u6570\u636e\uff0c\u5e76\u5c06\u5907\u4efd\u6570\u636e\u5b58\u50a8\u5728\u5b89\u5168\u7684\u4f4d\u7f6e\u3002\u5efa\u8bae\u6bcf\u65e5\u8fdb\u884c\u4e00\u6b21\u589e\u91cf\u5907\u4efd\uff0c\u5e76\u5728\u5907\u4efd\u5b8c\u6210\u540e\u5bf9\u5907\u4efd\u6570\u636e\u8fdb\u884c\u6821\u9a8c\u3002<\/li>\n\n\n\n<li>\u5b9a\u671f\u68c0\u67e5\u5907\u4efd\uff1a\u5b9a\u671f\u68c0\u67e5\u5907\u4efd\u6570\u636e\u662f\u5426\u5b8c\u6574\u3001\u6b63\u786e\uff0c\u5e76\u80fd\u591f\u6210\u529f\u6062\u590d\u6570\u636e\u3002\u5982\u679c\u53d1\u73b0\u5907\u4efd\u6570\u636e\u635f\u574f\u6216\u65e0\u6cd5\u6062\u590d\uff0c\u5219\u9700\u8981\u53ca\u65f6\u8fdb\u884c\u4fee\u590d\u6216\u91cd\u65b0\u5907\u4efd\u3002<\/li>\n\n\n\n<li>\u591a\u5907\u4efd\u7b56\u7565\uff1a\u5efa\u8bae\u4f7f\u7528\u591a\u79cd\u5907\u4efd\u7b56\u7565\uff0c\u5305\u62ec\u78c1\u76d8\u5907\u4efd\u3001\u4e91\u5907\u4efd\u3001\u5f02\u5730\u5907\u4efd\u7b49\uff0c\u4ee5\u786e\u4fdd\u5907\u4efd\u6570\u636e\u7684\u53ef\u9760\u6027\u548c\u5b89\u5168\u6027\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u603b\u4e4b\uff0c\u5907\u4efd\u662f\u6570\u636e\u5e93\u7ba1\u7406\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u5de5\u4f5c\uff0c\u9700\u8981\u6839\u636e\u6570\u636e\u7684\u91cd\u8981\u6027\u548c\u53d8\u5316\u9891\u7387\u9009\u62e9\u9002\u5f53\u7684\u5907\u4efd\u7c7b\u578b\u548c\u5907\u4efd\u9891\u7387\uff0c\u5e76\u5c06\u5907\u4efd\u6570\u636e\u5b58\u50a8\u5728\u5b89\u5168\u3001\u53ef\u9760\u7684\u4f4d\u7f6e\u3002\u5728\u5907\u4efd\u6570\u636e\u65f6\uff0c\u9700\u8981\u5b9a\u671f\u6d4b\u8bd5\u5907\u4efd\u6570\u636e\u662f\u5426\u80fd\u591f\u6210\u529f\u6062\u590d\uff0c\u5e76\u4f7f\u7528\u591a\u79cd\u5907\u4efd\u7b56\u7565\u6765\u786e\u4fdd\u5907\u4efd\u6570\u636e\u7684\u53ef\u9760\u6027\u548c\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u6570\u636e\u5e93\u5bfc\u51fa\u4e0e\u5bfc\u5165\uff08pg_dump\u3001pg_restore\uff09<\/p>\n\n\n\n<p>\u5728PostgreSQL\u4e2d\uff0c\u6570\u636e\u5e93\u5bfc\u5165\u548c\u5bfc\u51fa\u662f\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u5b83\u4eec\u53ef\u4ee5\u7528\u4e8e\u5907\u4efd\u6570\u636e\u5e93\u3001\u8fc1\u79fb\u6570\u636e\u3001\u6062\u590d\u6570\u636e\u7b49\u573a\u666f\u3002\u5176\u4e2d\uff0cpg_dump\u548cpg_restore\u662f\u5e38\u7528\u7684\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u7528\u4e8e\u6570\u636e\u5e93\u7684\u5bfc\u51fa\u548c\u5bfc\u5165\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5bfc\u51fa\u6570\u636e\u5e93<\/li>\n<\/ol>\n\n\n\n<p>\u4f7f\u7528pg_dump\u547d\u4ee4\u53ef\u4ee5\u5bfc\u51fa\u6574\u4e2a\u6570\u636e\u5e93\u6216\u90e8\u5206\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u5bfc\u51fa\u547d\u4ee4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bfc\u51fa\u6574\u4e2a\u6570\u636e\u5e93\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">Copy code<code>pg_dump -U username -h hostname dbname &gt; backup_file.sql\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bfc\u51fa\u6307\u5b9a\u8868\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">Copy code<code>pg_dump -U username -h hostname dbname -t tablename &gt; backup_file.sql\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bfc\u51fa\u6307\u5b9aschema\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">Copy code<code>pg_dump -U username -h hostname dbname -n schemaname &gt; backup_file.sql\n<\/code><\/pre>\n\n\n\n<p>\u5728\u4e0a\u8ff0\u547d\u4ee4\u4e2d\uff0c-U\u9009\u9879\u6307\u5b9a\u6570\u636e\u5e93\u7528\u6237\uff0c-h\u9009\u9879\u6307\u5b9a\u6570\u636e\u5e93\u4e3b\u673a\u540d\uff0c-t\u9009\u9879\u6307\u5b9a\u9700\u8981\u5bfc\u51fa\u7684\u8868\u540d\uff0c-n\u9009\u9879\u6307\u5b9a\u9700\u8981\u5bfc\u51fa\u7684schema\u540d\uff0c&gt;\u8fd0\u7b97\u7b26\u5c06\u8f93\u51fa\u5199\u5165\u5230backup_file.sql\u6587\u4ef6\u4e2d\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u5bfc\u5165\u6570\u636e\u5e93<\/li>\n<\/ol>\n\n\n\n<p>\u4f7f\u7528pg_restore\u547d\u4ee4\u53ef\u4ee5\u5c06\u5907\u4efd\u6587\u4ef6\u5bfc\u5165\u5230\u6570\u636e\u5e93\u4e2d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u5bfc\u5165\u547d\u4ee4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bfc\u5165\u6574\u4e2a\u6570\u636e\u5e93\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">Copy code<code>pg_restore -U username -h hostname -d dbname backup_file.sql\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bfc\u5165\u6307\u5b9a\u8868\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">Copy code<code>pg_restore -U username -h hostname -d dbname -t tablename backup_file.sql\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bfc\u5165\u6307\u5b9aschema\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-preformatted\">Copy code<code>pg_restore -U username -h hostname -d dbname -n schemaname backup_file.sql\n<\/code><\/pre>\n\n\n\n<p>\u5728\u4e0a\u8ff0\u547d\u4ee4\u4e2d\uff0c-U\u9009\u9879\u6307\u5b9a\u6570\u636e\u5e93\u7528\u6237\uff0c-h\u9009\u9879\u6307\u5b9a\u6570\u636e\u5e93\u4e3b\u673a\u540d\uff0c-d\u9009\u9879\u6307\u5b9a\u9700\u8981\u5bfc\u5165\u7684\u6570\u636e\u5e93\u540d\uff0c-t\u9009\u9879\u6307\u5b9a\u9700\u8981\u5bfc\u5165\u7684\u8868\u540d\uff0c-n\u9009\u9879\u6307\u5b9a\u9700\u8981\u5bfc\u5165\u7684schema\u540d\uff0cbackup_file.sql\u6307\u5b9a\u5907\u4efd\u6587\u4ef6\u7684\u4f4d\u7f6e\u3002<\/p>\n\n\n\n<p>\u603b\u4e4b\uff0cpg_dump\u548cpg_restore\u662fPostgreSQL\u4e2d\u5e38\u7528\u7684\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u7528\u4e8e\u6570\u636e\u5e93\u7684\u5bfc\u51fa\u548c\u5bfc\u5165\u3002\u5bfc\u51fa\u547d\u4ee4\u53ef\u4ee5\u5bfc\u51fa\u6574\u4e2a\u6570\u636e\u5e93\u6216\u90e8\u5206\u6570\u636e\uff0c\u5bfc\u5165\u547d\u4ee4\u53ef\u4ee5\u5c06\u5907\u4efd\u6587\u4ef6\u5bfc\u5165\u5230\u6570\u636e\u5e93\u4e2d\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5bfc\u5165\u65f6\u9700\u8981\u786e\u4fdd\u5907\u4efd\u6587\u4ef6\u548c\u6570\u636e\u5e93\u7248\u672c\u517c\u5bb9\uff0c\u5e76\u4e14\u5728\u5bfc\u5165\u524d\u9700\u8981\u5148\u521b\u5efa\u76ee\u6807\u6570\u636e\u5e93\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8be6\u7ec6\u89e3\u91ca\u6570\u636e\u5e93\u6062\u590d<\/p>\n\n\n\n<p>\u5728PostgreSQL\u4e2d\uff0c\u6570\u636e\u5e93\u6062\u590d\u662f\u6307\u5728\u53d1\u751f\u6570\u636e\u635f\u574f\u3001\u8bef\u64cd\u4f5c\u3001\u786c\u4ef6\u6545\u969c\u7b49\u4e0d\u53ef\u9884\u89c1\u7684\u60c5\u51b5\u4e0b\uff0c\u901a\u8fc7\u5907\u4efd\u6570\u636e\u6765\u8fd8\u539f\u6570\u636e\u5e93\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u6570\u636e\u5e93\u6062\u590d\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4f7f\u7528pg_dump\u548cpg_restore\u8fdb\u884c\u6062\u590d<\/li>\n<\/ol>\n\n\n\n<p>\u5982\u679c\u4f7f\u7528pg_dump\u547d\u4ee4\u5907\u4efd\u4e86\u6570\u636e\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528pg_restore\u547d\u4ee4\u6765\u6062\u590d\u6570\u636e\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u8fdb\u884c\u6570\u636e\u6062\u590d\u4e4b\u524d\uff0c\u9700\u8981\u786e\u4fdd\u6570\u636e\u5e93\u7684\u7248\u672c\u548c\u5907\u4efd\u6570\u636e\u7684\u7248\u672c\u4e00\u81f4\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6570\u636e\u4e22\u5931\u6216\u4e0d\u5b8c\u6574\u3002\u53e6\u5916\uff0c\u9700\u8981\u5148\u521b\u5efa\u76ee\u6807\u6570\u636e\u5e93\uff0c\u7136\u540e\u4f7f\u7528pg_restore\u547d\u4ee4\u5c06\u5907\u4efd\u6587\u4ef6\u5bfc\u5165\u5230\u76ee\u6807\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u4f7f\u7528\u57fa\u4e8e\u65f6\u95f4\u70b9\u7684\u6062\u590d<\/li>\n<\/ol>\n\n\n\n<p>\u5728\u53d1\u751f\u8bef\u64cd\u4f5c\u6216\u6570\u636e\u635f\u574f\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u57fa\u4e8e\u65f6\u95f4\u70b9\u7684\u6062\u590d\u6765\u6062\u590d\u6570\u636e\u5e93\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u8fd8\u539f\u5230\u67d0\u4e2a\u7279\u5b9a\u7684\u65f6\u95f4\u70b9\u7684\u6570\u636e\u72b6\u6001\uff0c\u800c\u4e0d\u662f\u5b8c\u5168\u6062\u590d\u6574\u4e2a\u6570\u636e\u5e93\u3002\u9700\u8981\u4f7f\u7528pg_basebackup\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a\u57fa\u7840\u5907\u4efd\uff0c\u5e76\u4f7f\u7528WAL\u5f52\u6863\u65e5\u5fd7\u8bb0\u5f55\u6570\u636e\u5e93\u7684\u66f4\u6539\u3002\u5728\u8fdb\u884c\u6062\u590d\u65f6\uff0c\u9700\u8981\u4f7f\u7528pg_ctl\u547d\u4ee4\u505c\u6b62\u6570\u636e\u5e93\uff0c\u5c06\u5907\u4efd\u6587\u4ef6\u62f7\u8d1d\u5230\u6570\u636e\u76ee\u5f55\u4e0b\uff0c\u5e76\u4f7f\u7528WAL\u65e5\u5fd7\u6765\u8fd8\u539f\u6570\u636e\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u4f7f\u7528\u6545\u969c\u8f6c\u79fb\uff08Failover\uff09\u6062\u590d<\/li>\n<\/ol>\n\n\n\n<p>\u5982\u679c\u4f7f\u7528PostgreSQL\u96c6\u7fa4\u6765\u7ba1\u7406\u6570\u636e\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528\u6545\u969c\u8f6c\u79fb\uff08Failover\uff09\u6765\u6062\u590d\u6570\u636e\u5e93\u3002\u5728\u4e00\u4e2a\u96c6\u7fa4\u4e2d\uff0c\u5982\u679c\u4e00\u4e2a\u8282\u70b9\u51fa\u73b0\u6545\u969c\uff0c\u53ef\u4ee5\u81ea\u52a8\u5c06\u5de5\u4f5c\u8d1f\u8f7d\u8f6c\u79fb\u5230\u5176\u4ed6\u8282\u70b9\u4e0a\uff0c\u4ece\u800c\u786e\u4fdd\u670d\u52a1\u7684\u8fde\u7eed\u6027\u548c\u53ef\u7528\u6027\u3002\u5728\u8fdb\u884c\u6545\u969c\u8f6c\u79fb\u65f6\uff0c\u9700\u8981\u786e\u4fdd\u5907\u4efd\u8282\u70b9\u80fd\u591f\u53ca\u65f6\u63a5\u7ba1\u4e3b\u8282\u70b9\u7684\u5de5\u4f5c\u8d1f\u8f7d\uff0c\u5e76\u4f7f\u7528\u5907\u4efd\u6570\u636e\u8fdb\u884c\u6062\u590d\u3002<\/p>\n\n\n\n<p>\u603b\u4e4b\uff0c\u6570\u636e\u5e93\u6062\u590d\u662fPostgreSQL\u7ba1\u7406\u4e2d\u91cd\u8981\u7684\u4e00\u73af\uff0c\u9700\u8981\u5728\u6570\u636e\u5e93\u53d1\u751f\u6545\u969c\u3001\u6570\u636e\u635f\u574f\u3001\u8bef\u64cd\u4f5c\u7b49\u60c5\u51b5\u4e0b\u8fdb\u884c\u6062\u590d\u3002\u53ef\u4ee5\u4f7f\u7528pg_dump\u548cpg_restore\u547d\u4ee4\u3001\u57fa\u4e8e\u65f6\u95f4\u70b9\u7684\u6062\u590d\u3001\u6545\u969c\u8f6c\u79fb\u7b49\u65b9\u6cd5\u6765\u6062\u590d\u6570\u636e\u5e93\u3002\u65e0\u8bba\u91c7\u7528\u4f55\u79cd\u65b9\u6cd5\uff0c\u9700\u8981\u786e\u4fdd\u5907\u4efd\u6570\u636e\u7684\u5b8c\u6574\u6027\u3001\u6b63\u786e\u6027\u548c\u53ef\u9760\u6027\uff0c\u5e76\u5728\u6062\u590d\u8fc7\u7a0b\u4e2d\u6ce8\u610f\u6570\u636e\u7248\u672c\u517c\u5bb9\u6027\u95ee\u9898\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u91cd\u70b9\u5185\u5bb9\u56de\u987e<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u672c\u6b21\u8ba8\u8bba\u4e2d\u7684\u91cd\u70b9\u5185\u5bb9\u56de\u987e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>PostgreSQL\u7b80\u4ecb\uff1aPostgreSQL\u662f\u4e00\u79cd\u529f\u80fd\u5f3a\u5927\u7684\u5f00\u6e90\u5bf9\u8c61\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5177\u6709\u9ad8\u5ea6\u7684\u53ef\u6269\u5c55\u6027\u3001\u53ef\u9760\u6027\u548c\u7075\u6d3b\u6027\u3002<\/li>\n\n\n\n<li>\u5982\u4f55\u9009\u62e9PostgreSQL\uff1a\u9009\u62e9PostgreSQL\u7684\u539f\u56e0\u5305\u62ec\u5176\u5f00\u6e90\u6027\u3001\u6027\u80fd\u3001\u53ef\u6269\u5c55\u6027\u3001\u53ef\u9760\u6027\u3001\u517c\u5bb9\u6027\u548c\u793e\u533a\u652f\u6301\u7b49\u3002<\/li>\n\n\n\n<li>\u5982\u4f55\u4e0b\u8f7d\u548c\u5b89\u88c5PostgreSQL\uff1a\u53ef\u4ee5\u4ecePostgreSQL\u5b98\u7f51\u4e0b\u8f7d\u9002\u5408\u81ea\u5df1\u7cfb\u7edf\u7684\u5b89\u88c5\u7a0b\u5e8f\uff0c\u5b89\u88c5\u5b8c\u6210\u540e\u9700\u8981\u914d\u7f6e\u73af\u5883\u53d8\u91cf\u3002<\/li>\n\n\n\n<li>\u5982\u4f55\u5b89\u88c5\u56fe\u5f62\u5316\u7ba1\u7406\u5de5\u5177pgAdmin\uff1a\u53ef\u4ee5\u4ecepgAdmin\u5b98\u7f51\u4e0b\u8f7d\u9002\u5408\u81ea\u5df1\u7cfb\u7edf\u7684\u5b89\u88c5\u7a0b\u5e8f\uff0c\u5e76\u8fdb\u884c\u5b89\u88c5\u3002<\/li>\n\n\n\n<li>\u6570\u636e\u5e93\u3001\u6570\u636e\u8868\u3001\u5217\u548c\u884c\u7684\u6982\u5ff5\uff1a\u6570\u636e\u5e93\u662f\u4e00\u4e2a\u5305\u542b\u591a\u4e2a\u6570\u636e\u8868\u7684\u5bb9\u5668\uff0c\u6570\u636e\u8868\u662f\u6570\u636e\u7684\u7ec4\u7ec7\u5355\u4f4d\uff0c\u5217\u662f\u6570\u636e\u8868\u7684\u5c5e\u6027\uff0c\u884c\u662f\u6570\u636e\u8868\u4e2d\u7684\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u5e38\u7528\u6570\u636e\u7c7b\u578b\uff1aPostgreSQL\u652f\u6301\u591a\u79cd\u6570\u636e\u7c7b\u578b\uff0c\u5305\u62ec\u6570\u503c\u578b\u3001\u5b57\u7b26\u578b\u3001\u65e5\u671f\u548c\u65f6\u95f4\u578b\u3001\u5e03\u5c14\u578b\u3001\u6570\u7ec4\u578b\u7b49\u3002<\/li>\n\n\n\n<li>SQL\u8bed\u8a00\u7b80\u4ecb\uff1aSQL\u662f\u4e00\u79cd\u7ed3\u6784\u5316\u67e5\u8be2\u8bed\u8a00\uff0c\u7528\u4e8e\u7ba1\u7406\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\uff0c\u5177\u6709\u7edf\u4e00\u6027\u3001\u6807\u51c6\u5316\u548c\u901a\u7528\u6027\u7b49\u7279\u70b9\u3002<\/li>\n\n\n\n<li>\u521b\u5efa\u6570\u636e\u8868\uff1a\u53ef\u4ee5\u4f7f\u7528CREATE TABLE\u8bed\u53e5\u6765\u521b\u5efa\u6570\u636e\u8868\uff0c\u5e76\u6307\u5b9a\u8868\u7684\u5217\u540d\u3001\u6570\u636e\u7c7b\u578b\u3001\u7ea6\u675f\u6761\u4ef6\u7b49\u3002<\/li>\n\n\n\n<li>\u4fee\u6539\u6570\u636e\u8868\u7ed3\u6784\uff1a\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u6765\u4fee\u6539\u6570\u636e\u8868\u7ed3\u6784\uff0c\u5982\u6dfb\u52a0\u3001\u4fee\u6539\u3001\u5220\u9664\u5217\u3001\u6dfb\u52a0\u7ea6\u675f\u7b49\u3002<\/li>\n\n\n\n<li>\u5220\u9664\u6570\u636e\u8868\uff1a\u53ef\u4ee5\u4f7f\u7528DROP TABLE\u8bed\u53e5\u6765\u5220\u9664\u6570\u636e\u8868\u3002<\/li>\n\n\n\n<li>\u63d2\u5165\u6570\u636e\uff08INSERT\uff09\uff1a\u53ef\u4ee5\u4f7f\u7528INSERT INTO\u8bed\u53e5\u6765\u5411\u6570\u636e\u8868\u4e2d\u63d2\u5165\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u67e5\u8be2\u6570\u636e\uff08SELECT\uff09\uff1a\u53ef\u4ee5\u4f7f\u7528SELECT\u8bed\u53e5\u6765\u4ece\u6570\u636e\u8868\u4e2d\u67e5\u8be2\u6570\u636e\uff0c\u5e76\u4f7f\u7528WHERE\u5b50\u53e5\u3001ORDER BY\u5b50\u53e5\u3001GROUP BY\u5b50\u53e5\u3001HAVING\u5b50\u53e5\u7b49\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u9650\u5236\u548c\u6392\u5e8f\u3002<\/li>\n\n\n\n<li>\u66f4\u65b0\u6570\u636e\uff08UPDATE\uff09\uff1a\u53ef\u4ee5\u4f7f\u7528UPDATE\u8bed\u53e5\u6765\u66f4\u65b0\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u5220\u9664\u6570\u636e\uff08DELETE\uff09\uff1a\u53ef\u4ee5\u4f7f\u7528DELETE FROM\u8bed\u53e5\u6765\u5220\u9664\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u805a\u5408\u51fd\u6570\uff08COUNT\u3001SUM\u3001AVG\u3001MIN\u3001MAX\uff09\uff1a\u53ef\u4ee5\u4f7f\u7528\u805a\u5408\u51fd\u6570\u6765\u5bf9\u6570\u636e\u8fdb\u884c\u7edf\u8ba1\u5206\u6790\u3002<\/li>\n\n\n\n<li>GROUP BY\u5b50\u53e5\uff1a\u53ef\u4ee5\u4f7f\u7528GROUP BY\u5b50\u53e5\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u5206\u7ec4\u3002<\/li>\n\n\n\n<li>HAVING\u5b50\u53e5\uff1a\u53ef\u4ee5\u4f7f\u7528HAVING\u5b50\u53e5\u5bf9\u5206\u7ec4\u540e\u7684\u6570\u636e\u8fdb\u884c\u8fc7\u6ee4\u3002<\/li>\n\n\n\n<li>\u5185\u8fde\u63a5\uff08INNER JOIN\uff09\u3001\u5de6\u8fde\u63a5\uff08LEFT JOIN\uff09\u3001\u53f3\u8fde\u63a5\uff08RIGHT JOIN\uff09\u3001\u5168\u8fde\u63a5\uff08FULL JOIN\uff09\uff1a\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e9b\u8fde\u63a5\u65b9\u5f0f\u5c06\u591a\u4e2a\u6570\u636e\u8868\u4e2d\u7684\u6570\u636e\u5173\u8054\u8d77\u6765\u3002<\/li>\n\n\n\n<li>\u5b50\u67e5\u8be2\uff1a\u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8be2\u5c06\u4e00\u4e2a\u67e5\u8be2\u7ed3\u679c\u4f5c\u4e3a\u53e6\u4e00\u4e2a\u67e5\u8be2\u7684\u4e00\u90e8\u5206\u3002<\/li>\n\n\n\n<li>EXISTS\u4e0eNOT EXISTS\uff1a\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e24\u4e2a\u64cd\u4f5c\u7b26\u6765\u5224\u65ad\u4e00\u4e2a\u67e5\u8be2\u7ed3\u679c\u662f\u5426\u5b58\u5728\u3002<\/li>\n\n\n\n<li>\u521b\u5efa\u89c6\u56fe\uff1a\u53ef\u4ee5\u4f7f\u7528CREATE VIEW\u8bed\u53e5\u6765\u521b\u5efa\u89c6\u56fe\uff0c\u89c6\u56fe\u662f\u865a\u62df\u7684\u8868\uff0c\u5b83\u5305\u542b\u4ece\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u636e\u8868<\/li>\n<\/ol>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u8fdb\u884c\u5ef6\u4f38\u5b66\u4e60\u8d44\u6e90\u63a8\u8350<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9bPostgreSQL\u5b66\u4e60\u8d44\u6e90\u7684\u63a8\u8350\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>PostgreSQL\u5b98\u65b9\u6587\u6863\uff1aPostgreSQL\u5b98\u65b9\u63d0\u4f9b\u4e86\u8be6\u7ec6\u7684\u4e2d\u82f1\u6587\u6587\u6863\uff0c\u5305\u62ec\u5165\u95e8\u6307\u5357\u3001\u5f00\u53d1\u6307\u5357\u3001\u7ba1\u7406\u6307\u5357\u7b49\uff0c\u53ef\u4ee5\u5e2e\u52a9\u521d\u5b66\u8005\u5feb\u901f\u638c\u63e1PostgreSQL\u7684\u4f7f\u7528\u3002<\/li>\n\n\n\n<li>PostgreSQL 9\u9ad8\u7ea7\u5e94\u7528\u4e0e\u6027\u80fd\u4f18\u5316\uff1a\u672c\u4e66\u8be6\u7ec6\u4ecb\u7ecd\u4e86PostgreSQL\u7684\u9ad8\u7ea7\u7279\u6027\u548c\u6027\u80fd\u4f18\u5316\u6280\u5de7\uff0c\u5305\u62ec\u67e5\u8be2\u4f18\u5316\u3001\u7d22\u5f15\u8bbe\u8ba1\u3001\u9ad8\u53ef\u7528\u6027\u3001\u5907\u4efd\u6062\u590d\u7b49\u65b9\u9762\u7684\u5185\u5bb9\u3002<\/li>\n\n\n\n<li>PostgreSQL\u6280\u672f\u5185\u5e55\uff1a\u672c\u4e66\u8be6\u7ec6\u4ecb\u7ecd\u4e86PostgreSQL\u7684\u5185\u90e8\u5b9e\u73b0\u539f\u7406\u548c\u67b6\u6784\u8bbe\u8ba1\uff0c\u5305\u62ec\u6570\u636e\u5b58\u50a8\u3001\u67e5\u8be2\u4f18\u5316\u3001\u4e8b\u52a1\u7ba1\u7406\u7b49\u65b9\u9762\u7684\u5185\u5bb9\uff0c\u9002\u5408\u8fdb\u9636\u5b66\u4e60\u3002<\/li>\n\n\n\n<li>PostgreSQL\u6570\u636e\u5e93\u6559\u7a0b\uff1a\u672c\u6559\u7a0b\u662f\u4e00\u5957\u7531\u6d45\u5165\u6df1\u7684PostgreSQL\u6559\u7a0b\uff0c\u5305\u62ec\u73af\u5883\u642d\u5efa\u3001\u6570\u636e\u7c7b\u578b\u3001\u6570\u636e\u64cd\u4f5c\u3001\u67e5\u8be2\u4f18\u5316\u7b49\u5185\u5bb9\uff0c\u9002\u5408\u521d\u5b66\u8005\u5165\u95e8\u3002<\/li>\n\n\n\n<li>PostgreSQL\u5e38\u7528\u547d\u4ee4\u901f\u67e5\u624b\u518c\uff1a\u672c\u624b\u518c\u6574\u7406\u4e86PostgreSQL\u5e38\u7528\u547d\u4ee4\u548c\u8bed\u6cd5\uff0c\u65b9\u4fbf\u5feb\u901f\u67e5\u9605\u3002<\/li>\n\n\n\n<li>PostgreSQL 12\u4e0e13\uff1a\u672c\u4e66\u8be6\u7ec6\u4ecb\u7ecd\u4e86PostgreSQL 12\u548c13\u7684\u65b0\u7279\u6027\u548c\u6539\u8fdb\uff0c\u5305\u62ecJSON\u652f\u6301\u3001\u5b58\u50a8\u8fc7\u7a0b\u3001\u6027\u80fd\u63d0\u5347\u7b49\u65b9\u9762\u7684\u5185\u5bb9\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u9664\u4e86\u4ee5\u4e0a\u8d44\u6e90\uff0c\u8fd8\u53ef\u4ee5\u53c2\u8003PostgreSQL\u5b98\u65b9\u7f51\u7ad9\u548cPostgreSQL\u793e\u533a\u8bba\u575b\uff0c\u4e86\u89e3\u6700\u65b0\u7684\u5f00\u53d1\u52a8\u6001\u548c\u6280\u672f\u8d8b\u52bf\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u53c2\u52a0\u4e00\u4e9b\u5728\u7ebf\u8bfe\u7a0b\u3001\u57f9\u8bad\u73ed\u6216\u8005\u53c2\u4e0e\u5f00\u6e90\u9879\u76ee\u7684\u5f00\u53d1\uff0c\u4ee5\u52a0\u6df1\u5bf9PostgreSQL\u7684\u7406\u89e3\u548c\u638c\u63e1\u3002<\/p>\n\n\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/chat.openai.com\/_next\/image?url=https%3A%2F%2Flh3.googleusercontent.com%2Fa%2FAGNmyxbwVdnTP0E2eBqDrujRQjV-wFP12Thr4vFgysVv5A%3Ds96-c&amp;w=64&amp;q=75\" alt=\"gun tei\"\/><\/figure>\n\n\n\n<p>\u8bf7\u7ee7\u7eed<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"7\">\n<li>PostgreSQL Wiki\uff1aPostgreSQL Wiki\u662fPostgreSQL\u793e\u533a\u7684\u77e5\u8bc6\u5e93\uff0c\u5305\u542b\u4e86\u5927\u91cf\u7684PostgreSQL\u76f8\u5173\u6280\u672f\u6587\u7ae0\u548c\u6307\u5357\uff0c\u6db5\u76d6\u4e86\u4ece\u521d\u5b66\u8005\u5230\u4e13\u5bb6\u7684\u4e0d\u540c\u5c42\u6b21\u548c\u9886\u57df\u3002<\/li>\n\n\n\n<li>PostgreSQL\u6559\u7a0b &#8211; \u83dc\u9e1f\u6559\u7a0b\uff1a\u83dc\u9e1f\u6559\u7a0b\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217PostgreSQL\u7684\u5165\u95e8\u6559\u7a0b\uff0c\u5305\u62ec\u73af\u5883\u642d\u5efa\u3001\u57fa\u672c\u8bed\u6cd5\u3001\u6570\u636e\u7c7b\u578b\u3001\u6570\u636e\u64cd\u4f5c\u3001\u7d22\u5f15\u3001\u89c6\u56fe\u3001\u51fd\u6570\u3001\u5b58\u50a8\u8fc7\u7a0b\u3001\u89e6\u53d1\u5668\u7b49\u5185\u5bb9\uff0c\u9002\u5408\u521d\u5b66\u8005\u5165\u95e8\u3002<\/li>\n\n\n\n<li>PostgreSQL\u8bfe\u7a0b &#8211; Udemy\uff1aUdemy\u662f\u4e00\u4e2a\u5728\u7ebf\u5b66\u4e60\u5e73\u53f0\uff0c\u63d0\u4f9b\u4e86\u8bb8\u591aPostgreSQL\u76f8\u5173\u7684\u8bfe\u7a0b\uff0c\u5305\u62ec\u5165\u95e8\u8bfe\u7a0b\u3001\u9ad8\u7ea7\u8bfe\u7a0b\u3001\u6027\u80fd\u4f18\u5316\u8bfe\u7a0b\u7b49\uff0c\u5b66\u751f\u53ef\u4ee5\u6839\u636e\u81ea\u5df1\u7684\u9700\u6c42\u548c\u6c34\u5e73\u9009\u62e9\u9002\u5408\u7684\u8bfe\u7a0b\u8fdb\u884c\u5b66\u4e60\u3002<\/li>\n\n\n\n<li>PostgreSQL\u90ae\u4ef6\u5217\u8868\uff1aPostgreSQL\u793e\u533a\u7684\u90ae\u4ef6\u5217\u8868\u662f\u4e00\u4e2a\u6d3b\u8dc3\u7684\u6280\u672f\u4ea4\u6d41\u5e73\u53f0\uff0c\u53ef\u4ee5\u5728\u8fd9\u91cc\u4e0e\u5176\u4ed6PostgreSQL\u5f00\u53d1\u8005\u548c\u7528\u6237\u4ea4\u6d41\u95ee\u9898\u548c\u7ecf\u9a8c\u3002<\/li>\n\n\n\n<li>PostgreSQL\u62d3\u5c55\u548c\u63d2\u4ef6\uff1aPostgreSQL\u652f\u6301\u8bb8\u591a\u62d3\u5c55\u548c\u63d2\u4ef6\uff0c\u53ef\u4ee5\u6269\u5c55PostgreSQL\u7684\u529f\u80fd\u548c\u6027\u80fd\u3002PostgreSQL\u5b98\u7f51\u63d0\u4f9b\u4e86\u8be6\u7ec6\u7684\u62d3\u5c55\u548c\u63d2\u4ef6\u6587\u6863\uff0c\u53ef\u4ee5\u4e86\u89e3\u548c\u5b66\u4e60\u5404\u79cd\u62d3\u5c55\u548c\u63d2\u4ef6\u7684\u4f7f\u7528\u548c\u5f00\u53d1\u3002<\/li>\n\n\n\n<li>PostgreSQL\u4e2d\u6587\u7f51\uff1aPostgreSQL\u4e2d\u6587\u7f51\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217PostgreSQL\u4e2d\u6587\u6559\u7a0b\u548c\u6587\u6863\uff0c\u5305\u62ec\u5165\u95e8\u6307\u5357\u3001\u7ba1\u7406\u6307\u5357\u3001\u5f00\u53d1\u6307\u5357\u7b49\uff0c\u65b9\u4fbf\u4e2d\u6587\u7528\u6237\u5b66\u4e60\u548c\u4f7f\u7528PostgreSQL\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4ee5\u4e0a\u8d44\u6e90\u53ef\u4ee5\u5e2e\u52a9\u5b66\u4e60\u8005\u6df1\u5165\u7406\u89e3PostgreSQL\u7684\u6982\u5ff5\u548c\u5e94\u7528\uff0c\u5e76\u63d0\u9ad8PostgreSQL\u7684\u5e94\u7528\u80fd\u529b\u548c\u89e3\u51b3\u95ee\u9898\u7684\u80fd\u529b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u662f\u8981\u505aIT\u6559\u7a0b\u7684\u89c6\u9891\uff0c\u4f60\u80fd\u5426\u6839\u636e\u7f51\u7ad9\u7684 &hellip; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1402","post","type-post","status-publish","format-standard","hentry","category-material"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/posts\/1402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1402"}],"version-history":[{"count":1,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/posts\/1402\/revisions"}],"predecessor-version":[{"id":1403,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=\/wp\/v2\/posts\/1402\/revisions\/1403"}],"wp:attachment":[{"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/edu.ujhb.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}