{"id":102722,"date":"2024-04-15T12:08:16","date_gmt":"2024-04-15T04:08:16","guid":{"rendered":""},"modified":"2024-04-15T12:08:18","modified_gmt":"2024-04-15T04:08:18","slug":"%e6%95%b0%e6%8d%ae%e5%ba%93%e8%ae%be%e8%ae%a1%e4%b8%ad%e5%a6%82%e4%bd%95%e4%bc%98%e5%8c%96%e5%a4%8d%e6%9d%82%e4%b8%9a%e5%8a%a1%e9%80%bb%e8%be%91","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/102722.html","title":{"rendered":"\u6570\u636e\u5e93\u8bbe\u8ba1\u4e2d\u5982\u4f55\u4f18\u5316\u590d\u6742\u4e1a\u52a1\u903b\u8f91"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/02174543\/18dcc692-f113-4b34-ac45-ce5fc277773d.webp\" alt=\"\u6570\u636e\u5e93\u8bbe\u8ba1\u4e2d\u5982\u4f55\u4f18\u5316\u590d\u6742\u4e1a\u52a1\u903b\u8f91\" \/><\/p>\n<p><p>\u6570\u636e\u5e93\u8bbe\u8ba1\u4e2d\u4f18\u5316\u590d\u6742\u4e1a\u52a1\u903b\u8f91\u7684\u5173\u952e\u5305\u62ec<strong>\u89c4\u8303\u5316\u6570\u636e\u5e93\u7ed3\u6784\u3001\u9009\u62e9\u5408\u9002\u7684\u7d22\u5f15\u3001\u4f7f\u7528\u5b58\u50a8\u8fc7\u7a0b\u3001\u5408\u7406\u5b89\u6392\u6570\u636e\u5206\u5e03<\/strong>\u3001<strong>SQL\u67e5\u8be2\u4f18\u5316<\/strong>\u3002\u6570\u636e\u5e93\u89c4\u8303\u5316\u80fd\u591f\u6709\u6548\u51cf\u5c11\u6570\u636e\u5197\u4f59\uff0c\u4fdd\u8bc1\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002\u89c4\u8303\u5316\u901a\u5e38\u5305\u62ec\u7b2c\u4e00\u8303\u5f0f\uff081NF\uff09\u3001\u7b2c\u4e8c\u8303\u5f0f\uff082NF\uff09\u3001\u7b2c\u4e09\u8303\u5f0f\uff083NF\uff09\u76f4\u81f3\u5df4\u65af-\u79d1\u5fb7\u8303\u5f0f\uff08BCNF\uff09\uff1b<strong>\u6bcf\u79cd\u8303\u5f0f\u90fd\u662f\u4e3a\u4e86\u89e3\u51b3\u7279\u5b9a\u7684\u6570\u636e\u5b58\u50a8\u95ee\u9898\u800c\u8bbe\u8ba1<\/strong>\u3002\u4f8b\u5982\uff0c\u7b2c\u4e09\u8303\u5f0f\uff083NF\uff09\u8981\u6c42\u4e00\u4e2a\u8868\u5fc5\u987b\u5148\u7b26\u54082NF\uff0c\u4e14\u6240\u6709\u7684\u975e\u4e3b\u5c5e\u6027\u4e0d\u4f9d\u8d56\u4e8e\u5176\u4ed6\u7684\u975e\u4e3b\u5c5e\u6027\uff0c\u8fd9\u6837\u8bbe\u8ba1\u80fd\u591f\u6709\u6548\u907f\u514d\u6570\u636e\u64cd\u4f5c\u8fc7\u7a0b\u4e2d\u7684\u63d2\u5165\u5f02\u5e38\u3001\u66f4\u65b0\u5f02\u5e38\u548c\u5220\u9664\u5f02\u5e38\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u6548\u7387\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u89c4\u8303\u5316\u6570\u636e\u5e93\u7ed3\u6784<\/h3>\n<\/p>\n<p><p>\u638c\u63e1\u6570\u636e\u5e93\u89c4\u8303\u5316\u539f\u5219\u662f\u8bbe\u8ba1\u4e2d\u7684\u7b2c\u4e00\u6b65\u3002\u9996\u5148\uff0c\u8981\u7406\u89e3\u5e76\u5e94\u7528\u597d\u7b2c\u4e00\u8303\u5f0f\uff081NF\uff09\u81f3\u7b2c\u4e09\u8303\u5f0f\uff083NF\uff09\uff0c\u786e\u4fdd\u6570\u636e\u8868\u7684\u7ed3\u6784\u8bbe\u8ba1\u80fd\u591f\u6709\u6548\u5730\u8868\u793a\u6570\u636e\u95f4\u7684\u5173\u7cfb\u5e76\u51cf\u5c11\u5197\u4f59\u3002<strong>\u901a\u8fc7\u8303\u5f0f\u5316\uff0c\u53ef\u4ee5\u5c06\u590d\u6742\u7684\u8868\u7ed3\u6784\u5206\u89e3\u4e3a\u591a\u4e2a\u76f8\u5bf9\u7b80\u5355\u3001\u529f\u80fd\u660e\u786e\u7684\u5c0f\u8868<\/strong>\u3002<\/p>\n<\/p>\n<p><h4>1. \u7b2c\u4e00\u8303\u5f0f\uff081NF\uff09<\/h4>\n<\/p>\n<p><p>\u786e\u4fdd\u6bcf\u4e2a\u8868\u5217\u90fd\u662f\u4e0d\u53ef\u5206\u5272\u7684\u57fa\u672c\u6570\u636e\u9879\uff0c\u4e14\u8868\u4e2d\u7684\u6240\u6709\u5217\u90fd\u662f\u8be5\u5217\u7684\u540c\u4e00\u6570\u636e\u7c7b\u578b\u7684\u5b9e\u4f8b\u3002<\/p>\n<\/p>\n<p><h4>2. \u7b2c\u4e8c\u8303\u5f0f\uff082NF\uff09<\/h4>\n<\/p>\n<p><p>\u57281NF\u7684\u57fa\u7840\u4e0a\uff0c\u6d88\u9664\u975e\u4e3b\u5c5e\u6027\u5bf9\u4e8e\u7801\u7684\u90e8\u5206\u51fd\u6570\u4f9d\u8d56\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u7d22\u5f15\u4f18\u5316<\/h3>\n<\/p>\n<p><p>\u7d22\u5f15\u662f\u63d0\u9ad8\u6570\u636e\u5e93\u67e5\u8be2\u6027\u80fd\u7684\u6709\u6548\u5de5\u5177\u3002\u9488\u5bf9\u67e5\u8be2\u8f83\u4e3a\u9891\u7e41\u7684\u5b57\u6bb5\u4f7f\u7528\u7d22\u5f15\uff0c\u5982\u4e3b\u952e\u3001\u5916\u952e\u4ee5\u53ca\u7ecf\u5e38\u51fa\u73b0\u5728WHERE\u5b50\u53e5\u4e2d\u7684\u5217\u3002<strong>\u521b\u5efa\u5408\u9002\u7684\u7d22\u5f15\u53ef\u4ee5\u5927\u5e45\u5ea6\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6<\/strong>\u3002<\/p>\n<\/p>\n<p><h4>1. \u7d22\u5f15\u7c7b\u578b\u9009\u62e9<\/h4>\n<\/p>\n<p><p>\u9009\u62e9\u6b63\u786e\u7684\u7d22\u5f15\u7c7b\u578b\u5bf9\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002B-tree\u7d22\u5f15\u9002\u7528\u4e8e\u5168\u952e\u503c\u3001\u952e\u503c\u8303\u56f4\u6216\u952e\u524d\u7f00\u67e5\u8be2\uff0c\u800c\u54c8\u5e0c\u7d22\u5f15\u9002\u5408\u4e8e\u7cbe\u786e\u67e5\u627e\u3002<\/p>\n<\/p>\n<p><h4>2. \u7d22\u5f15\u7ef4\u62a4<\/h4>\n<\/p>\n<p><p>\u5b9a\u671f\u5bf9\u7d22\u5f15\u8fdb\u884c\u7ef4\u62a4\uff0c\u6bd4\u5982\u91cd\u5efa\u6216\u91cd\u65b0\u7ec4\u7ec7\u7d22\u5f15\uff0c\u4ee5\u786e\u4fdd\u7d22\u5f15\u6027\u80fd\u4e0d\u4f1a\u968f\u7740\u65f6\u95f4\u63a8\u79fb\u800c\u964d\u4f4e\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u5b58\u50a8\u8fc7\u7a0b\u7684\u4f7f\u7528<\/h3>\n<\/p>\n<p><p>\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\u53ef\u4ee5\u901a\u8fc7\u5b58\u50a8\u8fc7\u7a0b\u5b9e\u73b0\uff0c\u8fd9\u6837\u505a\u53ef\u4ee5\u5c06\u903b\u8f91\u5c01\u88c5\u5728\u6570\u636e\u5e93\u5c42\u3002<strong>\u5b58\u50a8\u8fc7\u7a0b\u6267\u884c\u901f\u5ea6\u5feb\uff0c\u56e0\u4e3a\u5b83\u4eec\u662f\u9884\u7f16\u8bd1\u7684<\/strong>\uff0c\u540c\u65f6\u4e5f\u964d\u4f4e\u4e86\u7f51\u7edc\u6d41\u91cf\u3001\u7b80\u5316\u4e86\u5e94\u7528\u5f00\u53d1\u3002<\/p>\n<\/p>\n<p><h4>1. \u5b58\u50a8\u8fc7\u7a0b\u4f18\u52bf<\/h4>\n<\/p>\n<p><p>\u5b58\u50a8\u8fc7\u7a0b\u5e38\u5e38\u7528\u4e8e\u5904\u7406\u590d\u6742\u7684\u4e1a\u52a1\u903b\u8f91\uff0c\u5b83\u53ef\u4ee5\u51cf\u5c11\u5e94\u7528\u4e0e\u6570\u636e\u5e93\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u63d0\u9ad8\u6570\u636e\u5904\u7406\u7684\u6548\u7387\u3002<\/p>\n<\/p>\n<p><h4>2. \u7f16\u5199\u9ad8\u6548\u5b58\u50a8\u8fc7\u7a0b<\/h4>\n<\/p>\n<p><p>\u5728\u7f16\u5199\u5b58\u50a8\u8fc7\u7a0b\u65f6\u5e94\u5f53\u5c3d\u53ef\u80fd\u4f18\u5316\u903b\u8f91\u3001\u51cf\u5c11\u8d44\u6e90\u6d88\u8017\uff0c\u5e76\u8fdb\u884c\u9002\u5f53\u7684\u9519\u8bef\u5904\u7406\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u5408\u7406\u5b89\u6392\u6570\u636e\u5206\u5e03<\/h3>\n<\/p>\n<p><p>\u5728\u5904\u7406\u5927\u578b\u6570\u636e\u5e93\u65f6\uff0c\u5408\u7406\u5730\u5b89\u6392\u6570\u636e\u5206\u5e03\u7b56\u7565\u5982\u6570\u636e\u5206\u533a\u548c\u6570\u636e\u5206\u7247\u53ef\u4ee5\u5e26\u6765\u67e5\u8be2\u6027\u80fd\u7684\u5927\u5e45\u63d0\u5347\u3002\u5206\u533a\u53ef\u4ee5\u5c06\u6570\u636e\u5206\u6210\u591a\u4e2a\u90e8\u5206\uff0c\u6bcf\u4e2a\u90e8\u5206\u53ef\u4ee5\u5355\u72ec\u7ef4\u62a4\uff0c\u5206\u7247\u5219\u662f\u5c06\u6570\u636e\u5206\u5e03\u5230\u591a\u4e2a\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n<\/p>\n<p><h4>1. \u6570\u636e\u5206\u533a<\/h4>\n<\/p>\n<p><p>\u7406\u89e3\u548c\u4f7f\u7528\u597d\u6570\u636e\u5e93\u5206\u533a\u6280\u672f\uff0c\u5982\u8303\u56f4\u5206\u533a\u3001\u5217\u8868\u5206\u533a\u7b49\uff0c\u5b83\u4eec\u80fd\u591f\u6839\u636e\u4e1a\u52a1\u903b\u8f91\u5c06\u6570\u636e\u5206\u5e03\u5230\u4e0d\u540c\u7684\u8868\u4e2d\uff0c\u4ece\u800c\u63d0\u5347\u67e5\u8be2\u4e0e\u7ef4\u62a4\u7684\u6548\u7387\u3002<\/p>\n<\/p>\n<p><h4>2. \u6570\u636e\u5206\u7247<\/h4>\n<\/p>\n<p><p>\u5206\u7247\u5c06\u6570\u636e\u5206\u5e03\u5728\u4e0d\u540c\u7684\u8282\u70b9\u4e0a\uff0c\u53ef\u4ee5\u662f\u4e0d\u540c\u670d\u52a1\u5668\u7684\u4e0d\u540c\u6570\u636e\u5e93\uff0c\u5b83\u53ef\u4ee5\u8fdb\u4e00\u6b65\u63d0\u9ad8\u7cfb\u7edf\u7684\u6269\u5c55\u6027\u4e0e\u5e76\u53d1\u5904\u7406\u80fd\u529b\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001SQL\u67e5\u8be2\u4f18\u5316<\/h3>\n<\/p>\n<p><p>\u826f\u597d\u7684SQL\u67e5\u8be2\u662f\u63d0\u5347\u6570\u636e\u5e93\u6027\u80fd\u7684\u5173\u952e\u3002\u901a\u8fc7\u5bf9SQL\u8bed\u53e5\u8fdb\u884c\u4f18\u5316\uff0c\u6bd4\u5982\u5408\u7406\u4f7f\u7528\u5b50\u67e5\u8be2\u3001\u8fde\u63a5\u67e5\u8be2\u4e0e\u7d22\u5f15\uff0c\u53ef\u4ee5\u6781\u5927\u63d0\u5347\u67e5\u8be2\u901f\u5ea6\u3002<\/p>\n<\/p>\n<p><h4>1. \u907f\u514d\u5168\u8868\u626b\u63cf<\/h4>\n<\/p>\n<p><p>\u7f16\u5199\u67e5\u8be2\u65f6\u5e94\u786e\u4fdd\u4f7f\u7528\u7d22\u5f15\uff0c\u907f\u514d\u51fa\u73b0\u5168\u8868\u626b\u63cf\u7684\u60c5\u51b5\uff0c\u8fd9\u5bf9\u6027\u80fd\u6709\u6781\u5927\u7684\u8d1f\u9762\u5f71\u54cd\u3002<\/p>\n<\/p>\n<p><h4>2. \u67e5\u8be2\u8bed\u53e5\u7684\u4f18\u5316<\/h4>\n<\/p>\n<p><p>\u7b80\u5316\u67e5\u8be2\u6761\u4ef6\u3001\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u590d\u6742\u8ba1\u7b97\u548c\u5d4c\u5957\uff0c\u4ee5\u53ca\u5408\u7406\u4f7f\u7528\u805a\u5408\u51fd\u6570\uff0c\u80fd\u663e\u8457\u63d0\u5347\u67e5\u8be2\u8bed\u53e5\u7684\u6267\u884c\u6548\u7387\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. 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