{"id":56411,"date":"2023-10-14T00:03:12","date_gmt":"2023-10-13T16:03:12","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=56411"},"modified":"2023-10-14T00:03:14","modified_gmt":"2023-10-13T16:03:14","slug":"%e5%a6%82%e4%bd%95%e4%bc%98%e5%8c%96%e6%95%b0%e6%8d%ae%e5%ba%93%e6%9f%a5%e8%af%a2-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/56411.html","title":{"rendered":"\u5982\u4f55\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote\">\n<p>\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2\u53ef\u4ece\u4ee5\u4e0b\u4e94\u4e2a\u65b9\u9762\u5165\u624b\uff1a1.\u660e\u786e\u67e5\u8be2\u76ee\u6807\uff1b2.\u6df1\u5165\u5206\u6790\u67e5\u8be2\u8bed\u53e5\uff1b3.\u4f18\u5316\u6570\u636e\u8868\u7ed3\u6784\uff1b4.\u7d22\u5f15\u7ba1\u7406\uff1b5.\u5229\u7528\u67e5\u8be2\u7f13\u5b58\u3002\u505a\u597d\u8fd9\u4e9b\u65b9\u9762\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6280\u672f\u4eba\u5458\u548c\u6570\u636e\u7ba1\u7406\u8005\u642d\u5efa\u4e00\u4e2a\u9ad8\u6548\u3001\u7a33\u5b9a\u5e76\u6613\u4e8e\u7ef4\u62a4\u7684\u6570\u636e\u5e93\u67e5\u8be2\u73af\u5883\uff0c\u4ece\u800c\u63d0\u5347\u6574\u4f53\u7684\u6570\u636e\u5904\u7406\u80fd\u529b\u4e0e\u4e1a\u52a1\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">1.\u660e\u786e\u67e5\u8be2\u76ee\u6807<\/h2>\n\n\n\n<p>\u5728\u8fdb\u884c\u6570\u636e\u5e93\u67e5\u8be2\u4f18\u5316\u524d\uff0c\u4e86\u89e3\u5e76\u660e\u786e\u67e5\u8be2\u7684\u4e3b\u8981\u76ee\u6807\u548c\u9884\u671f\u7ed3\u679c\u81f3\u5173\u91cd\u8981\u3002\u662f\u5426\u8ffd\u6c42\u6700\u77ed\u7684\u54cd\u5e94\u65f6\u95f4\uff0c\u6216\u662f\u8981\u5904\u7406\u590d\u6742\u7684\u6570\u636e\u5173\u7cfb\uff1f\u660e\u786e\u76ee\u6807\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u7cbe\u786e\u5730\u5206\u6790\u67e5\u8be2\u7684\u6027\u80fd\u74f6\u9888\uff0c\u521b\u9020\u6027\u5730\u8c03\u6574\u67e5\u8be2\u903b\u8f91\uff0c\u4ee5\u53ca\u6709\u6548\u5730\u5229\u7528\u6570\u636e\u5e93\u8d44\u6e90\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2.\u6df1\u5165\u5206\u6790\u67e5\u8be2\u8bed\u53e5<\/h2>\n\n\n\n<p>\u6df1\u5165\u5206\u6790SQL\u67e5\u8be2\u8bed\u53e5\uff0c\u5ba1\u89c6\u5176\u7ed3\u6784\u548c\u903b\u8f91\uff0c\u786e\u4fdd\u5176\u7cbe\u70bc\u6709\u6548\u3002\u5229\u7528\u67e5\u8be2\u6267\u884c\u8ba1\u5212(EXPLAIN)\u6765\u7406\u89e3\u67e5\u8be2\u662f\u5982\u4f55\u88ab\u6570\u636e\u5e93\u6267\u884c\u7684\uff0c\u4f9d\u6b64\u627e\u51fa\u6f5c\u5728\u7684\u6027\u80fd\u74f6\u9888\u5e76\u505a\u9488\u5bf9\u6027\u7684\u4f18\u5316\u3002\u4f8b\u5982\uff0c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684JOIN\u64cd\u4f5c\u3001\u907f\u514d\u5728\u7d22\u5f15\u5217\u4e0a\u4f7f\u7528\u51fd\u6570\u6216\u8868\u8fbe\u5f0f\u3001\u9002\u5ea6\u5206\u9875\u7b49\uff0c\u80fd\u6709\u6548\u63d0\u5347\u67e5\u8be2\u6548\u7387\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3.\u4f18\u5316\u6570\u636e\u8868\u7ed3\u6784<\/h2>\n\n\n\n<p>\u4f18\u5316\u6570\u636e\u8868\u7ed3\u6784\uff0c\u4ee5\u4fbf\u66f4\u9ad8\u6548\u5730\u5b58\u50a8\u548c\u68c0\u7d22\u6570\u636e\u3002\u8fd9\u5305\u62ec\u9009\u62e9\u6b63\u786e\u7684\u6570\u636e\u7c7b\u578b\u3001\u89c4\u8303\u5316\u6570\u636e\u8868\u3001\u4f7f\u7528\u5206\u533a\u8868\u6216\u5206\u7247\u7b56\u7565\u7b49\u3002\u901a\u8fc7\u5408\u7406\u8bbe\u8ba1\u6570\u636e\u8868\u7ed3\u6784\uff0c\u51cf\u5c11\u6570\u636e\u5197\u4f59\u548c\u4fdd\u8bc1\u6570\u636e\u4e00\u81f4\u6027\u7684\u540c\u65f6\uff0c\u80fd\u8fdb\u4e00\u6b65\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4.\u7d22\u5f15\u7ba1\u7406<\/h2>\n\n\n\n<p>\u7d22\u5f15\u662f\u6570\u636e\u5e93\u67e5\u8be2\u4f18\u5316\u7684\u5229\u5668\u3002\u9002\u5f53\u5730\u521b\u5efa\u548c\u7ba1\u7406\u7d22\u5f15\u80fd\u663e\u8457\u52a0\u901f\u6570\u636e\u7684\u68c0\u7d22\u901f\u5ea6\u3002\u6ce8\u610f\u7d22\u5f15\u7684\u9009\u62e9\u4e0e\u7ba1\u7406\uff0c\u4f8b\u5982\uff1a\u9009\u62e9\u5408\u9002\u7684\u7d22\u5f15\u5217\u3001\u8003\u8651\u4f7f\u7528\u590d\u5408\u7d22\u5f15\u3001\u5b9a\u671f\u5206\u6790\u548c\u91cd\u5efa\u7d22\u5f15\u7b49\uff0c\u90fd\u662f\u91cd\u8981\u7684\u4f18\u5316\u63aa\u65bd\u3002\u4f46\u8fc7\u591a\u6216\u4e0d\u5f53\u7684\u7d22\u5f15\u540c\u6837\u4f1a\u5e26\u6765\u989d\u5916\u7684\u6027\u80fd\u5f00\u9500\uff0c\u56e0\u6b64\u7d22\u5f15\u7684\u4f7f\u7528\u9700\u6743\u8861\u5229\u5f0a\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5.\u5229\u7528\u67e5\u8be2\u7f13\u5b58<\/h2>\n\n\n\n<p>\u67e5\u8be2\u7f13\u5b58\u80fd\u591f\u5b58\u50a8\u548c\u91cd\u7528\u5148\u524d\u67e5\u8be2\u7684\u7ed3\u679c\uff0c\u51cf\u5c11\u76f8\u540c\u6216\u76f8\u4f3c\u67e5\u8be2\u7684\u5904\u7406\u65f6\u95f4\u3002\u901a\u8fc7\u5408\u7406\u914d\u7f6e\u548c\u4f7f\u7528\u67e5\u8be2\u7f13\u5b58\uff0c\u6211\u4eec\u53ef\u4ee5\u5927\u5927\u51cf\u5c11\u6570\u636e\u5e93\u7684\u67e5\u8be2\u8d1f\u8f7d\uff0c\u5e76\u63d0\u5347\u67e5\u8be2\u54cd\u5e94\u65f6\u95f4\u3002\u540c\u65f6\uff0c\u6211\u4eec\u4e5f\u8981\u5173\u6ce8\u7f13\u5b58\u7684\u5931\u6548\u548c\u66f4\u65b0\u7b56\u7565\uff0c\u4ee5\u4fdd\u8bc1\u6570\u636e\u7684\u5b9e\u65f6\u6027\u3002<\/p>\n\n\n\n<p>\u6570\u636e\u5e93\u67e5\u8be2\u4f18\u5316\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u8fc7\u7a0b\uff0c\u5b83\u6db5\u76d6\u4e86\u4eceSQL\u7f16\u5199\u3001\u6570\u636e\u8868\u8bbe\u8ba1\u5230\u786c\u4ef6\u8d44\u6e90\u914d\u7f6e\u7684\u591a\u4e2a\u5c42\u9762\u3002\u5408\u7406\u7684\u4f18\u5316\u4e0d\u4ec5\u80fd\u591f\u63d0\u5347\u6570\u636e\u5e93\u7684\u67e5\u8be2\u6027\u80fd\uff0c\u4e5f\u6709\u52a9\u4e8e\u6574\u4e2a\u7cfb\u7edf\u7684\u7a33\u5b9a\u8fd0\u884c\u3002\u6211\u4eec\u5e94\u8be5\u6839\u636e\u5177\u4f53\u7684\u4e1a\u52a1\u573a\u666f\u548c\u6570\u636e\u7279\u5f81\uff0c\u7075\u6d3b\u8fd0\u7528\u591a\u79cd\u4f18\u5316\u7b56\u7565\uff0c\u4e0d\u65ad\u8c03\u6574\u548c\u5b8c\u5584\uff0c\u786e\u4fdd\u6570\u636e\u7684\u5feb\u901f\u3001\u51c6\u786e\u548c\u5b89\u5168\u8bbf\u95ee\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1280\" height=\"850\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/10\/19_\u5982\u4f55\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2.jpg?x-oss-process=image\/auto-orient,1\/format,webp\" alt=\"\" class=\"wp-image-56412\" srcset=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/10\/19_\u5982\u4f55\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2.jpg 1280w, https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2023\/10\/19_\u5982\u4f55\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2-768x510.jpg 768w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/figure><\/div>\n\n\n<p><strong>\u5e38\u89c1\u95ee\u7b54\uff1a<\/strong><\/p>\n\n\n\n<ul>\n<li>\u95ee\uff1a\u5982\u4f55\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2\u7684\u901f\u5ea6\uff1f<\/li>\n\n\n\n<li>\u7b54\uff1a\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2\u901f\u5ea6\u53ef\u4ee5\u4ece\u591a\u4e2a\u65b9\u9762\u8fdb\u884c\uff1a\u9996\u5148\uff0c\u5bf9SQL\u67e5\u8be2\u8bed\u53e5\u8fdb\u884c\u4f18\u5316\uff0c\u786e\u4fdd\u4f7f\u7528\u9ad8\u6548\u7684\u67e5\u8be2\u903b\u8f91\uff1b\u5176\u6b21\uff0c\u5229\u7528\u7d22\u5f15\u63d0\u9ad8\u68c0\u7d22\u901f\u5ea6\uff0c\u5bf9\u7ecf\u5e38\u7528\u4e8e\u641c\u7d22\u7684\u5217\u548cWHERE\u5b50\u53e5\u4e2d\u7684\u5217\u521b\u5efa\u5408\u9002\u7684\u7d22\u5f15\uff1b\u7b2c\u4e09\uff0c\u8003\u8651\u4f7f\u7528\u6570\u636e\u5e93\u7684\u7f13\u5b58\u548c\u5206\u533a\u529f\u80fd\uff1b\u6700\u540e\uff0c\u68c0\u67e5\u548c\u4f18\u5316\u6570\u636e\u5e93\u8bbe\u8ba1\uff0c\u5982\u6570\u636e\u8868\u7ed3\u6784\u548c\u5b58\u50a8\u8fc7\u7a0b\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n<ul>\n<li>\u95ee\uff1a\u4ec0\u4e48\u662f\u6570\u636e\u5e93\u67e5\u8be2\u7684\u6267\u884c\u8ba1\u5212\uff0c\u5e76\u5982\u4f55\u4f7f\u7528\u5b83\u6765\u4f18\u5316\u67e5\u8be2\uff1f<\/li>\n\n\n\n<li>\u7b54\uff1a\u6570\u636e\u5e93\u67e5\u8be2\u7684\u6267\u884c\u8ba1\u5212\u662f\u6570\u636e\u5e93\u7528\u6765\u6267\u884c\u67e5\u8be2\u7684\u201c\u84dd\u56fe\u201d\uff0c\u5b83\u63cf\u8ff0\u4e86\u6570\u636e\u5e93\u5c06\u5982\u4f55\u6267\u884c\u67e5\u8be2\u8bed\u53e5\u4ee5\u68c0\u7d22\u6570\u636e\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5206\u6790\u6267\u884c\u8ba1\u5212\uff0c\u7406\u89e3\u6570\u636e\u5e93\u662f\u5982\u4f55\u8bbf\u95ee\u548c\u5904\u7406\u6570\u636e\u7684\u3002\u82e5\u67e5\u8be2\u6027\u80fd\u4e0d\u4f73\uff0c\u6267\u884c\u8ba1\u5212\u4e2d\u7684\u4fe1\u606f\uff08\u4f8b\u5982\uff0c\u662f\u5426\u4f7f\u7528\u4e86\u7d22\u5f15\u3001\u626b\u63cf\u7684\u884c\u6570\u7b49\uff09\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u627e\u5230\u6027\u80fd\u74f6\u9888\uff0c\u5e76\u636e\u6b64\u4f18\u5316\u67e5\u8be2\u8bed\u53e5\u6216\u8005\u8c03\u6574\u6570\u636e\u5e93\u8bbe\u8ba1\uff08\u5982\uff0c\u6dfb\u52a0\u6216\u4fee\u6539\u7d22\u5f15\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<ul>\n<li>\u95ee\uff1a\u5728\u4f55\u79cd\u60c5\u51b5\u4e0b\u6211\u4eec\u5e94\u8be5\u8003\u8651\u6570\u636e\u5e93\u67e5\u8be2\u4f18\u5316\uff1f<\/li>\n\n\n\n<li>\u7b54\uff1a\u5f53\u4f60\u7684\u6570\u636e\u5e93\u67e5\u8be2\u54cd\u5e94\u53d8\u6162\uff0c\u6216\u7cfb\u7edf\u8d1f\u8f7d\u589e\u52a0\u65f6\uff0c\u5e94\u8be5\u8003\u8651\u8fdb\u884c\u67e5\u8be2\u4f18\u5316\u3002\u5982\u679c\u4f60\u7684\u4e1a\u52a1\u6570\u636e\u91cf\u6b63\u5728\u5feb\u901f\u589e\u957f\uff0c\u6216\u8005\u4e1a\u52a1\u573a\u666f\u53d1\u751f\u53d8\u5316\uff08\u4f8b\u5982\uff0c\u65b0\u589e\u4e86\u4e00\u4e9b\u590d\u6742\u7684\u62a5\u8868\u67e5\u8be2\uff09\uff0c\u8fd9\u4e9b\u60c5\u51b5\u4e5f\u53ef\u80fd\u9700\u8981\u5bf9\u67e5\u8be2\u8fdb\u884c\u4f18\u5316\uff0c\u4ee5\u4fdd\u8bc1\u6570\u636e\u5e93\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u8fd0\u884c\u3002<\/li>\n<\/ul>\n\n\n\n<ul>\n<li>\u95ee\uff1a\u5982\u4f55\u5904\u7406\u6570\u636e\u5e93\u7684\u5e76\u53d1\u8bbf\u95ee\u95ee\u9898\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\uff1f<\/li>\n\n\n\n<li>\u7b54\uff1a\u5904\u7406\u6570\u636e\u5e93\u5e76\u53d1\u8bbf\u95ee\uff0c\u4e3b\u8981\u662f\u8981\u51cf\u5c11\u9501\u7684\u7ade\u4e89\u3002\u9996\u5148\uff0c\u6211\u4eec\u53ef\u4ee5\u4f18\u5316\u67e5\u8be2\u8bed\u53e5\u548c\u4e8b\u52a1\u8bbe\u8ba1\uff0c\u786e\u4fdd\u5b83\u4eec\u5c3d\u53ef\u80fd\u5730\u77ed\u5e76\u4e14\u9ad8\u6548\uff1b\u5176\u6b21\uff0c\u8c03\u6574\u6570\u636e\u5e93\u7684\u4e8b\u52a1\u9694\u79bb\u7ea7\u522b\uff0c\u6839\u636e\u4e1a\u52a1\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u9694\u79bb\u7ea7\u522b\u4ee5\u51cf\u5c11\u9501\u7684\u5f00\u9500\uff1b\u8fd8\u53ef\u4ee5\u901a\u8fc7\u6570\u636e\u5e93\u5206\u533a\u3001\u4f7f\u7528\u53ea\u8bfb\u526f\u672c\u7b49\u65b9\u6cd5\u5206\u6563\u67e5\u8be2\u7684\u8d1f\u8f7d\uff0c\u4ece\u800c\u51cf\u5c11\u9501\u51b2\u7a81\u548c\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n<ul>\n<li>\u95ee\uff1a\u4ec0\u4e48\u662f\u6570\u636e\u5e93\u7d22\u5f15\uff0c\u5b83\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff0c\u4ee5\u53ca\u5982\u4f55\u7528\u5b83\u6765\u4f18\u5316\u67e5\u8be2\uff1f<\/li>\n\n\n\n<li>\u7b54\uff1a\u6570\u636e\u5e93\u7d22\u5f15\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6570\u636e\u5e93\u7cfb\u7edf\u66f4\u5feb\u5730\u68c0\u7d22\u6570\u636e\u3002\u5f53\u6211\u4eec\u5bf9\u67d0\u5217\u521b\u5efa\u7d22\u5f15\u65f6\uff0c\u6570\u636e\u5e93\u4f1a\u5c06\u8be5\u5217\u7684\u6570\u636e\u548c\u8fd9\u4e9b\u6570\u636e\u5728\u8868\u4e2d\u7684\u4f4d\u7f6e\u4fe1\u606f\u5b58\u50a8\u5728\u7d22\u5f15\u4e2d\uff0c\u8fd9\u6837\u5728\u67e5\u8be2\u65f6\uff0c\u6570\u636e\u5e93\u53ef\u4ee5\u76f4\u63a5\u67e5\u627e\u7d22\u5f15\u83b7\u53d6\u6570\u636e\u7684\u4f4d\u7f6e\uff0c\u800c\u4e0d\u7528\u626b\u63cf\u6574\u5f20\u8868\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5728\u7ecf\u5e38\u4f5c\u4e3a\u67e5\u8be2\u6761\u4ef6\u6216\u6392\u5e8f\u4f9d\u636e\u7684\u5217\u4e0a\u521b\u5efa\u7d22\u5f15\u6765\u4f18\u5316\u67e5\u8be2\u3002\u540c\u65f6\uff0c\u4e5f\u8981\u6ce8\u610f\u907f\u514d\u8fc7\u5ea6\u7d22\u5f15\uff0c\u56e0\u4e3a\u521b\u5efa\u548c\u7ef4\u62a4\u7d22\u5f15\u4e5f\u9700\u8981\u6d88\u8017\u8d44\u6e90\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2\u53ef\u4ece\u4ee5\u4e0b\u4e94\u4e2a\u65b9\u9762\u5165\u624b\uff1a1.\u660e\u786e\u67e5\u8be2\u76ee\u6807\uff1b2.\u6df1\u5165\u5206\u6790\u67e5\u8be2\u8bed\u53e5\uff1b3.\u4f18\u5316\u6570\u636e\u8868\u7ed3\u6784\uff1b4.\u7d22\u5f15\u7ba1\u7406\uff1b [&hellip;]","protected":false},"author":3,"featured_media":56413,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[2612],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/56411"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=56411"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/56411\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/56413"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=56411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=56411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=56411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}