{"id":181928,"date":"2024-11-09T19:40:21","date_gmt":"2024-11-09T11:40:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/181928\/"},"modified":"2024-11-09T19:40:22","modified_gmt":"2024-11-09T11:40:22","slug":"%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%a9%b6%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84in%e8%aa%9e%e6%b3%95%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%abin%e8%aa%9e%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/181928\/","title":{"rendered":"\u6df1\u5165\u63a2\u7a76\u6578\u64da\u5eab\u4e2d\u7684IN\u8a9e\u6cd5\u4f7f\u7528\u65b9\u6cd5\uff08\u6578\u64da\u5eabin\u8a9e\u6cd5\uff09"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%a9%b6%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84in%e8%aa%9e%e6%b3%95%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%abin%e8%aa%9e%e6%b3%95-myckFLNvDz\">\u6df1\u5165\u63a2\u7a76\u6578\u64da\u5eab\u4e2d\u7684IN\u8a9e\u6cd5\u4f7f\u7528\u65b9\u6cd5\uff08\u6578\u64da\u5eabin\u8a9e\u6cd5\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u67e5\u8a62\u4e2d\uff0c<code>IN<\/code> \u8a9e\u6cd5\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u548c\u6578\u64da\u5206\u6790\u5e2b\u66f4\u9ad8\u6548\u5730\u7be9\u9078\u6578\u64da\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e <code>IN<\/code> \u8a9e\u6cd5\u7684\u4f7f\u7528\u65b9\u6cd5\u3001\u512a\u52e2\u4ee5\u53ca\u4e00\u4e9b\u5be6\u969b\u7684\u61c9\u7528\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afin%e8%aa%9e%e6%b3%95%ef%bc%9f-myckFLNvDz\">\u4ec0\u9ebc\u662fIN\u8a9e\u6cd5\uff1f<\/h2>\n<p><code>IN<\/code> \u8a9e\u6cd5\u662f\u4e00\u7a2e SQL \u8a9e\u53e5\uff0c\u7528\u65bc\u67e5\u8a62\u67d0\u500b\u5b57\u6bb5\u7684\u503c\u662f\u5426\u5728\u4e00\u7d44\u6307\u5b9a\u7684\u503c\u4e2d\u3002\u9019\u7a2e\u8a9e\u6cd5\u53ef\u4ee5\u7c21\u5316\u67e5\u8a62\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u6aa2\u67e5\u591a\u500b\u503c\u6642\uff0c\u80fd\u5920\u63d0\u9ad8\u53ef\u8b80\u6027\u548c\u6548\u7387\u3002<\/p>\n<h2 id=\"in%e8%aa%9e%e6%b3%95%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95%e7%b5%90%e6%a7%8b-myckFLNvDz\">IN\u8a9e\u6cd5\u7684\u57fa\u672c\u8a9e\u6cd5\u7d50\u69cb<\/h2>\n<p>\u57fa\u672c\u7684 <code>IN<\/code> \u8a9e\u6cd5\u7d50\u69cb\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\u4f60\u60f3\u8981\u7be9\u9078\u7684\u5b57\u6bb5\uff0c\u800c <code>value1, value2, ...<\/code> \u662f\u4f60\u5e0c\u671b\u5339\u914d\u7684\u503c\u5217\u8868\u3002<\/p>\n<h2 id=\"in%e8%aa%9e%e6%b3%95%e7%9a%84%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-myckFLNvDz\">IN\u8a9e\u6cd5\u7684\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 <code>IN<\/code> \u8a9e\u6cd5\u7684\u7bc4\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\u683c\uff0c\u5305\u542b\u54e1\u5de5\u7684\u59d3\u540d\u548c\u90e8\u9580\uff1a<\/p>\n<pre><code>SELECT name, department\nFROM employees\nWHERE department IN ('HR', 'IT', 'Sales');\n<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u5728 HR\u3001IT \u6216 Sales \u90e8\u9580\u5de5\u4f5c\u7684\u54e1\u5de5\u59d3\u540d\u53ca\u5176\u90e8\u9580\u3002<\/p>\n<h2 id=\"in%e8%aa%9e%e6%b3%95%e7%9a%84%e5%84%aa%e5%8b%a2-myckFLNvDz\">IN\u8a9e\u6cd5\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u63d0\u9ad8\u53ef\u8b80\u6027\uff1a<\/strong>\u4f7f\u7528 <code>IN<\/code> \u8a9e\u6cd5\u53ef\u4ee5\u4f7f\u67e5\u8a62\u8a9e\u53e5\u66f4\u7c21\u6f54\uff0c\u6613\u65bc\u7406\u89e3\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u91cd\u8907\u4ee3\u78bc\uff1a<\/strong>\u5728\u9700\u8981\u591a\u6b21\u4f7f\u7528\u76f8\u540c\u689d\u4ef6\u6642\uff0c<code>IN<\/code> \u8a9e\u6cd5\u53ef\u4ee5\u907f\u514d\u91cd\u8907\u66f8\u5beb\u3002<\/li>\n<li><strong>\u6027\u80fd\u512a\u5316\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528 <code>IN<\/code> \u8a9e\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u7576\u503c\u7684\u6578\u91cf\u8f03\u5c11\u6642\u3002<\/li>\n<\/ul>\n<h2 id=\"in%e8%aa%9e%e6%b3%95%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-myckFLNvDz\">IN\u8a9e\u6cd5\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u96d6\u7136 <code>IN<\/code> \u8a9e\u6cd5\u6709\u8a31\u591a\u512a\u52e2\uff0c\u4f46\u5728\u4f7f\u7528\u6642\u4e5f\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\u5339\u914d\uff1a<\/strong>\u78ba\u4fdd <code>IN<\/code> \u5217\u8868\u4e2d\u7684\u503c\u8207\u67e5\u8a62\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u76f8\u7b26\uff0c\u5426\u5247\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u5931\u6557\u6216\u8fd4\u56de\u932f\u8aa4\u7d50\u679c\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u7576 <code>IN<\/code> \u5217\u8868\u4e2d\u7684\u503c\u904e\u591a\u6642\uff0c\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5176\u4ed6\u67e5\u8a62\u65b9\u5f0f\uff0c\u5982 <code>JOIN<\/code>\u3002<\/li>\n<li><strong>NULL\u503c\u8655\u7406\uff1a<\/strong>\u5982\u679c <code>IN<\/code> \u5217\u8868\u4e2d\u5305\u542b <code>NULL<\/code> \u503c\uff0c\u5247\u67e5\u8a62\u7d50\u679c\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\uff0c\u9700\u8b39\u614e\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-myckFLNvDz\">\u7d50\u8ad6<\/h2>\n<p>\u7e3d\u7d50\u4f86\u8aaa\uff0c<code>IN<\/code> \u8a9e\u6cd5\u662f\u4e00\u500b\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u6578\u64da\u5eab\u67e5\u8a62\u4e2d\u66f4\u9ad8\u6548\u5730\u7be9\u9078\u6578\u64da\u3002\u7121\u8ad6\u662f\u5728\u65e5\u5e38\u7684\u6578\u64da\u67e5\u8a62\u9084\u662f\u8907\u96dc\u7684\u6578\u64da\u5206\u6790\u4e2d\uff0c\u638c\u63e1 <code>IN<\/code> \u8a9e\u6cd5\u7684\u4f7f\u7528\u65b9\u6cd5\u90fd\u5c07\u5927\u5927\u63d0\u5347\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u4f7f\u7528\u6709\u66f4\u6df1\u5165\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u7a76\u6578\u64da\u5eab\u4e2d\u7684IN\u8a9e\u6cd5\u4f7f\u7528\u65b9\u6cd5\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7be9\u9078\u6578\u64da\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u638c\u63e1\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\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-181928","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181928","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=181928"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181928\/revisions"}],"predecessor-version":[{"id":181929,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181928\/revisions\/181929"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=181928"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=181928"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=181928"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}