{"id":115639,"date":"2024-04-19T12:44:40","date_gmt":"2024-04-19T04:44:40","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/115639.html"},"modified":"2024-04-19T12:44:44","modified_gmt":"2024-04-19T04:44:44","slug":"%e5%9c%a8sql%e4%b8%ad%e5%a6%82%e4%bd%95%e8%bf%9b%e8%a1%8c%e8%b5%84%e6%ba%90%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/115639.html","title":{"rendered":"\u5728SQL\u4e2d\u5982\u4f55\u8fdb\u884c\u8d44\u6e90\u7ba1\u7406"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/02173742\/0b7499e0-2faa-4a2c-ab8d-01ccacdb8850.webp\" alt=\"\u5728SQL\u4e2d\u5982\u4f55\u8fdb\u884c\u8d44\u6e90\u7ba1\u7406\" \/><\/p>\n<p><p>\u5728SQL\u4e2d\u8fdb\u884c<a href=\"https:\/\/docs.pingcode.com\/blog\/project-management\/58557.html\" target=\"_blank\">\u8d44\u6e90\u7ba1\u7406<\/a>\u6d89\u53ca\u51e0\u4e2a\u5173\u952e\u7b56\u7565\uff1a<strong>\u6570\u636e\u5e93\u8bbe\u8ba1\u4f18\u5316<\/strong>\u3001<strong>\u67e5\u8be2\u4f18\u5316<\/strong>\u3001<strong>\u7d22\u5f15\u5408\u7406\u4f7f\u7528<\/strong>\u3001<strong>\u8fde\u63a5\u6c60\u7ba1\u7406<\/strong>\u3002\u5176\u4e2d\uff0c<strong>\u6570\u636e\u5e93\u8bbe\u8ba1\u4f18\u5316<\/strong>\u662f\u57fa\u7840\u4e14\u81f3\u5173\u91cd\u8981\u7684\u4e00\u6b65\uff0c\u56e0\u4e3a\u5b83\u76f4\u63a5\u5f71\u54cd\u5230\u540e\u7eed\u64cd\u4f5c\u7684\u6548\u7387\u548c\u670d\u52a1\u5668\u8d44\u6e90\u7684\u4f7f\u7528\u72b6\u6001\u3002\u826f\u597d\u7684\u6570\u636e\u5e93\u8bbe\u8ba1\u5e94\u8be5\u9075\u5faa\u6570\u636e\u5e93\u89c4\u8303\u5316\u539f\u5219\uff0c\u907f\u514d\u6570\u636e\u5197\u4f59\uff0c\u51cf\u5c11\u6570\u636e\u5b58\u50a8\u7a7a\u95f4\uff0c\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002\u901a\u8fc7\u5408\u7406\u7684\u8868\u7ed3\u6784\u8bbe\u8ba1\u3001\u6570\u636e\u7c7b\u578b\u9009\u62e9\u548c\u5173\u7cfb\u5efa\u6a21\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6570\u636e\u64cd\u4f5c\u7684\u6027\u80fd\uff0c\u964d\u4f4e\u7cfb\u7edf\u7684\u8fd0\u7ef4\u6210\u672c\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u6570\u636e\u5e93\u8bbe\u8ba1\u4f18\u5316<\/h3>\n<\/p>\n<p><p>\u5728\u8fdb\u884c\u6570\u636e\u5e93\u8bbe\u8ba1\u65f6\uff0c\u5e94\u8be5\u6df1\u5165\u7406\u89e3\u4e1a\u52a1\u9700\u6c42\uff0c\u5408\u7406\u89c4\u5212\u6570\u636e\u5e93\u7684\u7ed3\u6784\u3002\u8bbe\u8ba1\u8fc7\u7a0b\u4e2d\uff0c\u5e94\u7528\u89c4\u8303\u5316\u7406\u8bba\u907f\u514d\u6570\u636e\u7684\u5197\u4f59\uff0c\u901a\u8fc7\u5212\u5206\u6570\u636e\u8868\u548c\u4f7f\u7528\u5408\u9002\u7684\u6570\u636e\u7c7b\u578b\u6765\u4f18\u5316\u5b58\u50a8\u3002\u4f8b\u5982\uff0c\u5c06\u5927\u578b\u8868\u62c6\u5206\u4e3a\u5c0f\u578b\u8868\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u67e5\u8be2\u7684\u6548\u7387\uff0c\u8fd8\u6709\u52a9\u4e8e\u5e76\u53d1\u63a7\u5236\u3002\u5728\u9009\u62e9\u6570\u636e\u7c7b\u578b\u65f6\uff0c\u5e94\u5f53\u5c3d\u91cf\u9009\u62e9\u6700\u9002\u5408\u6570\u636e\u7684\u7c7b\u578b\uff0c\u5982\u4f7f\u7528INT\u800c\u975eBIGINT\u5b58\u50a8\u8f83\u5c0f\u6570\u503c\uff0c\u53ef\u4ee5\u51cf\u5c11\u5b58\u50a8\u7a7a\u95f4\u7684\u6d6a\u8d39\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u67e5\u8be2\u4f18\u5316<\/h3>\n<\/p>\n<p><p>\u67e5\u8be2\u4f18\u5316\u662f\u63d0\u9ad8\u6570\u636e\u5e93\u6027\u80fd\u7684\u53e6\u4e00\u91cd\u8981\u65b9\u9762\u3002\u901a\u8fc7\u907f\u514d\u4f7f\u7528SELECT 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