{"id":197710,"date":"2024-11-14T10:04:27","date_gmt":"2024-11-14T02:04:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/197710\/"},"modified":"2024-11-14T10:04:28","modified_gmt":"2024-11-14T02:04:28","slug":"%e5%88%a9%e7%94%a8where-in%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c-%e6%95%b8%e6%93%9a%e5%ba%abwhere-in","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/197710\/","title":{"rendered":"\u5229\u7528where in\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u5eab\u64cd\u4f5c (\u6578\u64da\u5eabwhere in)"},"content":{"rendered":"<h1 id=\"%e5%88%a9%e7%94%a8where-in%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c-wxynHprPup\">\u5229\u7528WHERE IN\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u5eab\u64cd\u4f5c<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\uff0c\u67e5\u8a62\u6027\u80fd\u662f\u5f71\u97ff\u6574\u9ad4\u7cfb\u7d71\u6548\u7387\u7684\u91cd\u8981\u56e0\u7d20\u4e4b\u4e00\u3002\u5c24\u5176\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u5982\u4f55\u9ad8\u6548\u5730\u6aa2\u7d22\u6240\u9700\u4fe1\u606f\u6210\u70ba\u4e86\u958b\u767c\u8005\u9700\u8981\u9762\u5c0d\u7684\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5229\u7528SQL\u4e2d\u7684<code>WHERE IN<\/code>\u8a9e\u53e5\u4f86\u5be6\u73fe\u9ad8\u6548\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afwhere-in%e8%aa%9e%e5%8f%a5%ef%bc%9f-wxynHprPup\">\u4ec0\u9ebc\u662fWHERE IN\u8a9e\u53e5\uff1f<\/h2>\n<p><code>WHERE IN<\/code>\u8a9e\u53e5\u662f\u4e00\u7a2e\u7528\u65bc\u7be9\u9078\u67e5\u8a62\u7d50\u679c\u7684SQL\u8a9e\u53e5\u3002\u5b83\u5141\u8a31\u958b\u767c\u8005\u6307\u5b9a\u4e00\u7d44\u503c\uff0c\u4e26\u6aa2\u7d22\u90a3\u4e9b\u7b26\u5408\u9019\u4e9b\u503c\u7684\u8a18\u9304\u3002\u9019\u5728\u9700\u8981\u5f9e\u4e00\u500b\u8f03\u5927\u7684\u6578\u64da\u96c6\u4e2d\u9078\u64c7\u7279\u5b9a\u689d\u4ef6\u7684\u6578\u64da\u6642\u7279\u5225\u6709\u7528\u3002<\/p>\n<h3 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-wxynHprPup\">\u57fa\u672c\u8a9e\u6cd5<\/h3>\n<pre><code>SELECT column1, column2, ...\nFROM table_name\nWHERE column_name IN (value1, value2, ...);\n<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employees<\/code>\u7684\u8868\uff0c\u4e26\u5e0c\u671b\u67e5\u8a62\u6240\u6709\u90e8\u9580\u70ba\u201cHR\u201d\u6216\u201cIT\u201d\u7684\u54e1\u5de5\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT * \nFROM employees \nWHERE department IN ('HR', 'IT');\n<\/code><\/pre>\n<h2 id=\"where-in%e7%9a%84%e5%84%aa%e5%8b%a2-wxynHprPup\">WHERE IN\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u7c21\u5316\u67e5\u8a62\uff1a<\/strong>\u4f7f\u7528<code>WHERE IN<\/code>\u53ef\u4ee5\u4f7f\u67e5\u8a62\u8a9e\u53e5\u66f4\u52a0\u7c21\u6f54\uff0c\u6613\u65bc\u95b1\u8b80\u548c\u7dad\u8b77\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u6027\u80fd\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528<code>WHERE IN<\/code>\u53ef\u4ee5\u6bd4\u591a\u500b<code>OR<\/code>\u689d\u4ef6\u66f4\u9ad8\u6548\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>\u53ef\u4ee5\u8f15\u9b06\u5730\u64f4\u5c55\u67e5\u8a62\u689d\u4ef6\uff0c\u53ea\u9700\u5728\u62ec\u865f\u4e2d\u6dfb\u52a0\u66f4\u591a\u503c\u5373\u53ef\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8where-in%e7%9a%84%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-wxynHprPup\">\u4f7f\u7528WHERE IN\u7684\u6700\u4f73\u5be6\u8e10<\/h2>\n<h3 id=\"1-%e9%99%90%e5%88%b6in%e5%ad%90%e5%8f%a5%e4%b8%ad%e7%9a%84%e5%80%bc%e6%95%b8%e9%87%8f-wxynHprPup\">1. \u9650\u5236IN\u5b50\u53e5\u4e2d\u7684\u503c\u6578\u91cf<\/h3>\n<p>\u96d6\u7136<code>WHERE IN<\/code>\u53ef\u4ee5\u63a5\u53d7\u591a\u500b\u503c\uff0c\u4f46\u904e\u591a\u7684\u503c\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002\u4e00\u822c\u5efa\u8b70\u5c07IN\u5b50\u53e5\u4e2d\u7684\u503c\u9650\u5236\u5728\u5408\u7406\u7684\u7bc4\u570d\u5167\uff0c\u901a\u5e38\u4e0d\u8d85\u904e1000\u500b\u503c\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%a9%a2-wxynHprPup\">2. \u4f7f\u7528\u5b50\u67e5\u8a62<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u5e0c\u671b\u5f9e\u53e6\u4e00\u500b\u8868\u4e2d\u7372\u53d6IN\u5b50\u53e5\u7684\u503c\u3002\u9019\u6642\u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8a62\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * \nFROM employees \nWHERE department_id IN (SELECT id FROM departments WHERE location = 'Hong Kong');\n<\/code><\/pre>\n<h3 id=\"3-%e8%80%83%e6%85%ae%e4%bd%bf%e7%94%a8join-wxynHprPup\">3. \u8003\u616e\u4f7f\u7528JOIN<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528JOIN\u53ef\u80fd\u6703\u6bd4\u4f7f\u7528<code>WHERE IN<\/code>\u66f4\u9ad8\u6548\uff0c\u7279\u5225\u662f\u7576\u6d89\u53ca\u5230\u5927\u6578\u64da\u96c6\u6642\u3002JOIN\u53ef\u4ee5\u5229\u7528\u7d22\u5f15\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-wxynHprPup\">\u7d50\u8ad6<\/h2>\n<p>\u5229\u7528<code>WHERE IN<\/code>\u8a9e\u53e5\u53ef\u4ee5\u6709\u6548\u5730\u7be9\u9078\u6578\u64da\uff0c\u7c21\u5316\u67e5\u8a62\u4e26\u63d0\u9ad8\u6027\u80fd\u3002\u7136\u800c\uff0c\u958b\u767c\u8005\u5728\u4f7f\u7528\u6642\u61c9\u8003\u616e\u5230\u6700\u4f73\u5be6\u8e10\uff0c\u4ee5\u78ba\u4fdd\u67e5\u8a62\u7684\u9ad8\u6548\u6027\u548c\u53ef\u7dad\u8b77\u6027\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u9078\u64c7\u5408\u9069\u7684\u67e5\u8a62\u65b9\u5f0f\u5c07\u5c0d\u7cfb\u7d71\u6027\u80fd\u7522\u751f\u6df1\u9060\u5f71\u97ff\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u63d0\u4f9b\u7a69\u5b9a\u548c\u5feb\u901f\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5229\u7528WHERE IN\u8a9e\u53e5\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u6548\u7387\uff0c\u7c21\u5316\u67e5\u8a62\u4e26\u52a0\u901f\u6578\u64da\u6aa2\u7d22\u904e\u7a0b\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-197710","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/197710","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=197710"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/197710\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=197710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=197710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=197710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}