{"id":202613,"date":"2025-05-22T09:31:27","date_gmt":"2025-05-22T01:31:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202613\/"},"modified":"2025-05-22T09:31:27","modified_gmt":"2025-05-22T01:31:27","slug":"%e7%99%be%e4%b8%87%e7%ba%a7-mysql-%e6%95%b0%e6%8d%ae%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e9%ab%98%e6%95%88%e7%9a%84%e6%a8%a1%e7%b3%8a%e6%90%9c%e7%b4%a2%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202613\/","title":{"rendered":"## \u767e\u4e07\u7ea7 MySQL \u6570\u636e\u5982\u4f55\u5b9e\u73b0\u9ad8\u6548\u7684\u6a21\u7cca\u641c\u7d22\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>## \u767e\u4e07\u7ea7 MySQL \u6570\u636e\u5982\u4f55\u5b9e\u73b0\u9ad8\u6548\u7684\u6a21\u7cca\u641c\u7d22\uff1f<\/h1>\n<p>\u5927\u5bb6\u597d\uff0c\u4eca\u5929\u672c\u4eba\u7ed9\u5927\u5bb6\u5e26\u6765\u6587\u7ae0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a## \u767e\u4e07\u7ea7 MySQL \u6570\u636e\u5982\u4f55\u5b9e\u73b0\u9ad8\u6548\u7684\u6a21\u7cca\u641c\u7d22\uff1f\u300b<\/span>\uff0c\u6587\u4e2d\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span><\/span>\uff0c\u5982\u679c\u4f60\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u90a3\u5c31\u8bf7\u5404\u4f4d\u670b\u53cb\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427~\u5e0c\u671b\u80fd\u771f\u6b63\u5e2e\u5230\u4f60\u4eec\uff0c\u8c22\u8c22\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729924251671c8c9b4d86f.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u5982\u4f55\u4f18\u5316\u767e\u4e07\u7ea7\u6570\u636e\u7684 mysql \u6a21\u7cca\u641c\u7d22<\/strong><\/p>\n<p>\u5728\u6570\u636e\u5e93\u6570\u636e\u91cf\u5e9e\u5927\u65f6\uff0c\u8fdb\u884c\u6a21\u7cca\u641c\u7d22\u64cd\u4f5c\u5f80\u5f80\u4f1a\u9047\u5230\u6548\u7387\u4f4e\u4e0b\u7684\u95ee\u9898\u3002\u672c\u6587\u91cd\u70b9\u8ba8\u8bba\u5982\u4f55\u9488\u5bf9\u4e00\u5343\u4e07\u7ea7 mysql \u6570\u636e\u5b9e\u73b0\u9ad8\u6548\u7684\u6a21\u7cca\u641c\u7d22\u3002<\/p>\n<p><strong>\u5e38\u89c4\u89e3\u6cd5\uff1a\u4e0d\u53ef\u884c<\/strong><\/p>\n<p>\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u65e0\u6cd5\u4f7f\u7528\u7d22\u5f15\u8fdb\u884c\u6a21\u7cca\u641c\u7d22\u3002\u56e0\u6b64\uff0c\u6bcf\u6b21\u6267\u884c\u641c\u7d22\u90fd\u9700\u8981\u5168\u8868\u626b\u63cf\uff0c\u5bfc\u81f4\u6027\u80fd\u4f4e\u4e0b\u3002<\/p>\n<p><strong>\u7d22\u5f15\u8868\u6cd5\uff1a\u53ef\u884c<\/strong><\/p>\n<p>\u8fd9\u91cc\uff0c\u6211\u4eec\u53ef\u4ee5\u501f\u9274\u4e00\u79cd\u7b80\u5355\u7684\u7d22\u5f15\u8868\u65b9\u6cd5\uff1a<\/p>\n<p>\u521b\u5efa\u4e00\u4e2a\u7d22\u5f15\u8868\uff0c\u5176\u4e2d\u5305\u542b\u4e09\u5217\uff1a<\/p>\n<ul>\n<li>\u5f53\u524d\u8bcd<\/li>\n<li>\u4e0b\u4e00\u8bcd<\/li>\n<li>\u539f\u59cb\u8bb0\u5f55\u4e3b\u952e id<\/li>\n<\/ul>\n<p>\u5bf9\u6bcf\u4e00\u4e2a\u5173\u952e\u8bcd\u5e8f\u5217\uff0c\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u5173\u952e\u8bcd\u5e8f\u5217\u201c\u6a21\u7cca\u641c\u7d22\u201d\uff0c\u5c06\u63d2\u5165\u4ee5\u4e0b\u8bb0\u5f55\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5f53\u524d\u8bcd<\/th>\n<th>\u4e0b\u4e00\u8bcd<\/th>\n<th>\u539f\u59cb\u8bb0\u5f55\u4e3b\u952e id<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6a21\u7cca<\/td>\n<td>\u641c<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>\u641c<\/td>\n<td>\u7d22<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>\u7d22<\/td>\n<td>null<\/td>\n<td>1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u641c\u7d22\u8fc7\u7a0b\uff1a<\/strong><\/p>\n<ol>\n<li>\u6839\u636e\u5173\u952e\u8bcd\u5e8f\u5217\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5173\u952e\u8bcd\u67e5\u8be2\u7d22\u5f15\u8868\uff0c\u83b7\u53d6\u539f\u59cb\u8bb0\u5f55\u4e3b\u952e id\u3002<\/li>\n<li>\u6839\u636e\u4e3b\u952e id \u67e5\u8be2\u539f\u59cb\u8bb0\u5f55\u8868\uff0c\u5373\u53ef\u83b7\u5f97\u641c\u7d22\u7ed3\u679c\u3002<\/li>\n<\/ol>\n<p><strong>\u4f8b\uff1a\u641c\u7d22\u201c\u6a21\u7cca\u641c\u7d22\u201d<\/strong><\/p>\n<pre>SELECT DISTINCT \u539f\u8bb0\u5f55\u4e3b\u952eID\nFROM (SELECT \u539f\u8bb0\u5f55\u4e3b\u952eID FROM \u7d22\u5f15\u8868 WHERE \u5f53\u524d\u8bcd = '\u6a21\u7cca' AND \u4e0b\u4e00\u8bcd = '\u7d22')\nJOIN (SELECT \u539f\u8bb0\u5f55\u4e3b\u952eID FROM \u7d22\u5f15\u8868 WHERE \u5f53\u524d\u8bcd = '\u7d22' AND \u4e0b\u4e00\u8bcd IS NULL) ON \u539f\u8bb0\u5f55\u4e3b\u952eID;<\/pre>\n<p><strong>\u4f18\u52bf\uff1a<\/strong><\/p>\n<ul>\n<li>\u5feb\u901f\u9ad8\u6548\uff0c\u641c\u7d22\u65f6\u95f4\u4e0e\u5173\u952e\u8bcd\u5e8f\u5217\u957f\u5ea6\u65e0\u5173<\/li>\n<li>\u4e0d\u4f9d\u8d56\u5185\u5b58\uff0c\u5f00\u9500\u8f83\u5c0f<\/li>\n<\/ul>\n<p><strong>\u9650\u5236\uff1a<\/strong><\/p>\n<ul>\n<li>\u7d22\u5f15\u8868\u4f1a\u968f\u7740\u6570\u636e\u91cf\u7684\u589e\u52a0\u800c\u53d8\u5927<\/li>\n<li>\u9700\u8981\u989d\u5916\u7ef4\u62a4\u7d22\u5f15\u8868<\/li>\n<\/ul>\n<p><strong>\u5176\u4ed6\u65b9\u6848\uff1a<\/strong><\/p>\n<p><strong>\u5185\u5b58\u52a0\u8f7d\u6cd5\uff1a<\/strong><\/p>\n<p>\u5c06\u6570\u636e\u5168\u90e8\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\uff0c\u5728\u5185\u5b58\u4e2d\u6267\u884c\u6a21\u7cca\u641c\u7d22\u3002\u8be5\u65b9\u6cd5\u901f\u5ea6\u8f83\u5feb\uff0c\u4f46\u5185\u5b58\u5f00\u9500\u8f83\u5927\u3002<\/p>\n<p><strong>\u4e00\u5207\u7686\u6587\u4ef6\uff08everything\uff09\u641c\u7d22\u6cd5\uff1a<\/strong><\/p>\n<p>everything \u4f7f\u7528\u4e86\u4e00\u79cd\u4e0d\u540c\u7684\u641c\u7d22\u7d22\u5f15\u6280\u672f\uff0c\u79f0\u4e3a\u6587\u4ef6\u7cfb\u7edf\u7b5b\u9009\u5668\u9a71\u52a8\u7a0b\u5e8f (fsd)\u3002\u8be5\u9a71\u52a8\u7a0b\u5e8f\u4f1a\u76d1\u63a7\u6587\u4ef6\u7cfb\u7edf\u66f4\u6539\uff0c\u5e76\u5b9e\u65f6\u66f4\u65b0\u5176\u7d22\u5f15\u3002everything \u53ef\u4ee5\u5feb\u901f\u641c\u7d22\u6587\u4ef6\u5185\u5bb9\uff0c\u6a21\u7cca\u641c\u7d22\u4e5f\u4e0d\u4f8b\u5916\uff0c\u4f46\u5b83\u4e0d\u662f\u4e00\u4e2a\u4e13\u95e8\u7684\u6570\u636e\u5e93\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>## \u767e\u4e07\u7ea7 MySQL \u6570\u636e\u5982&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202613","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202613","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202613"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202613\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}