{"id":78698,"date":"2024-10-16T12:11:16","date_gmt":"2024-10-16T04:11:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/78698\/"},"modified":"2024-10-16T12:11:16","modified_gmt":"2024-10-16T04:11:16","slug":"mysql%e6%8c%87%e4%bb%a4-in%ef%bc%88%e5%8c%85%e5%90%ab%e5%9c%a8-%e4%b8%ad%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/78698\/","title":{"rendered":"MySQL\u6307\u4ee4: IN\uff08\u5305\u542b\u5728&#8230;\u4e2d\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-in%ef%bc%88%e5%8c%85%e5%90%ab%e5%9c%a8-%e4%b8%ad%ef%bc%89-GTtJGexroi\">MySQL\u6307\u4ee4: IN\uff08\u5305\u542b\u5728&#8230;\u4e2d\uff09<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMySQL\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u95dc\u806f\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u5b83\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u4f86\u8655\u7406\u548c\u67e5\u8a62\u8cc7\u6599\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662fIN\u6307\u4ee4\u3002IN\u6307\u4ee4\u7528\u65bc\u6aa2\u67e5\u67d0\u500b\u503c\u662f\u5426\u5b58\u5728\u65bc\u4e00\u7d44\u6307\u5b9a\u7684\u503c\u4e2d\uff0c\u9019\u5728\u9032\u884c\u8cc7\u6599\u7be9\u9078\u6642\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"in%e6%8c%87%e4%bb%a4%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-GTtJGexroi\">IN\u6307\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>IN\u6307\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column1, column2, ...\nFROM table_name\nWHERE column_name IN (value1, value2, ...);\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>column_name<\/code>\u662f\u8981\u6aa2\u67e5\u7684\u6b04\u4f4d\uff0c<code>value1, value2, ...<\/code>\u662f\u8981\u6bd4\u5c0d\u7684\u503c\u3002\u5982\u679c<code>column_name<\/code>\u7684\u503c\u5728\u6307\u5b9a\u7684\u503c\u5217\u8868\u4e2d\uff0c\u5247\u8a72\u884c\u5c07\u88ab\u9078\u53d6\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-GTtJGexroi\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employees<\/code>\u7684\u8cc7\u6599\u8868\uff0c\u5305\u542b\u4ee5\u4e0b\u6b04\u4f4d\uff1a<\/p>\n<ul>\n<li><code>id<\/code><\/li>\n<li><code>name<\/code><\/li>\n<li><code>department<\/code><\/li>\n<\/ul>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u8a62\u6240\u6709\u5728\u300c\u92b7\u552e\u90e8\u300d\u6216\u300c\u5e02\u5834\u90e8\u300d\u5de5\u4f5c\u7684\u54e1\u5de5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u7684SQL\u6307\u4ee4\uff1a<\/p>\n<pre><code>SELECT * \nFROM employees \nWHERE department IN ('\u92b7\u552e\u90e8', '\u5e02\u5834\u90e8');\n<\/code><\/pre>\n<p>\u9019\u689d\u6307\u4ee4\u5c07\u8fd4\u56de\u6240\u6709\u90e8\u9580\u70ba\u300c\u92b7\u552e\u90e8\u300d\u6216\u300c\u5e02\u5834\u90e8\u300d\u7684\u54e1\u5de5\u8cc7\u6599\u3002<\/p>\n<h2 id=\"in%e6%8c%87%e4%bb%a4%e7%9a%84%e5%84%aa%e5%8b%a2-GTtJGexroi\">IN\u6307\u4ee4\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528IN\u6307\u4ee4\u6709\u5e7e\u500b\u660e\u986f\u7684\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u7c21\u5316\u67e5\u8a62\uff1a<\/strong>\u4f7f\u7528IN\u6307\u4ee4\u53ef\u4ee5\u4f7f\u67e5\u8a62\u8a9e\u53e5\u66f4\u7c21\u6f54\uff0c\u7279\u5225\u662f\u7576\u9700\u8981\u6bd4\u5c0d\u591a\u500b\u503c\u6642\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u53ef\u8b80\u6027\uff1a<\/strong>\u76f8\u8f03\u65bc\u4f7f\u7528\u591a\u500bOR\u689d\u4ef6\uff0cIN\u6307\u4ee4\u4f7f\u5f97SQL\u8a9e\u53e5\u66f4\u6613\u65bc\u7406\u89e3\u3002<\/li>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528IN\u6307\u4ee4\u53ef\u80fd\u6703\u6bd4\u591a\u500bOR\u689d\u4ef6\u66f4\u6709\u6548\u7387\uff0c\u56e0\u70ba\u8cc7\u6599\u5eab\u53ef\u4ee5\u66f4\u597d\u5730\u512a\u5316\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-GTtJGexroi\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136IN\u6307\u4ee4\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u4e5f\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u503c\u7684\u6578\u91cf\uff1a<\/strong>\u5982\u679cIN\u5217\u8868\u4e2d\u7684\u503c\u904e\u591a\uff0c\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u8003\u616e\u4f7f\u7528JOIN\u6216\u5b50\u67e5\u8a62\u4f86\u512a\u5316\u67e5\u8a62\u3002<\/li>\n<li><strong>\u8cc7\u6599\u985e\u578b\uff1a<\/strong>\u78ba\u4fddIN\u5217\u8868\u4e2d\u7684\u503c\u8207\u8cc7\u6599\u8868\u4e2d\u76f8\u61c9\u6b04\u4f4d\u7684\u8cc7\u6599\u985e\u578b\u4e00\u81f4\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u932f\u8aa4\u3002<\/li>\n<li><strong>NULL\u503c\uff1a<\/strong>\u5982\u679cIN\u5217\u8868\u4e2d\u5305\u542bNULL\u503c\uff0c\u5247\u67e5\u8a62\u7d50\u679c\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u9700\u8981\u7279\u5225\u6ce8\u610fNULL\u7684\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-GTtJGexroi\">\u7d50\u8ad6<\/h2>\n<p>IN\u6307\u4ee4\u662fMySQL\u4e2d\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u6709\u6548\u5730\u7be9\u9078\u8cc7\u6599\u3002\u900f\u904e\u7c21\u5316\u67e5\u8a62\u8a9e\u53e5\u548c\u63d0\u9ad8\u53ef\u8b80\u6027\uff0cIN\u6307\u4ee4\u5728\u65e5\u5e38\u7684\u8cc7\u6599\u5eab\u64cd\u4f5c\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\u3002\u7121\u8ad6\u662f\u5c0d\u65bc\u521d\u5b78\u8005\u9084\u662f\u7d93\u9a57\u8c50\u5bcc\u7684\u958b\u767c\u8005\uff0c\u638c\u63e1IN\u6307\u4ee4\u7684\u4f7f\u7528\u90fd\u662f\u975e\u5e38\u5fc5\u8981\u7684\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3MySQL\u53ca\u5176\u76f8\u95dc\u6280\u8853\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u8cc7\u6599\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u6307\u4ee4IN\u7684\u7528\u6cd5\uff0c\u8f7b\u677e\u7b5b\u9009\u6570\u636e\uff0c\u5224\u65ad\u67d0\u4e2a\u503c\u662f\u5426\u5305\u542b\u5728\u6307\u5b9a\u5217\u8868\u4e2d\uff0c\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-78698","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78698","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=78698"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78698\/revisions"}],"predecessor-version":[{"id":78699,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78698\/revisions\/78699"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=78698"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=78698"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=78698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}