{"id":200498,"date":"2025-05-06T12:14:05","date_gmt":"2025-05-06T04:14:05","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200498\/"},"modified":"2025-05-06T12:14:05","modified_gmt":"2025-05-06T04:14:05","slug":"mysql-%e5%85%b3%e9%94%ae%e5%ad%97%e6%89%a7%e8%a1%8c%e9%a1%ba%e5%ba%8f%ef%bc%9ain-%e5%92%8c-union-%e5%9c%a8%e5%93%aa%e9%87%8c%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200498\/","title":{"rendered":"MySQL \u5173\u952e\u5b57\u6267\u884c\u987a\u5e8f\uff1aIN \u548c UNION \u5728\u54ea\u91cc\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>MySQL \u5173\u952e\u5b57\u6267\u884c\u987a\u5e8f\uff1aIN \u548c UNION \u5728\u54ea\u91cc\uff1f<\/h1>\n<p>\u201c\u7eb5\u6709\u75be\u98ce\u6765\uff0c\u4eba\u751f\u4e0d\u8a00\u5f03\u201d\uff0c\u8fd9\u53e5\u8bdd\u9001\u7ed9\u6b63\u5728\u5b66\u4e60\u7684\u670b\u53cb\u4eec\uff0c\u4e5f\u5e0c\u671b\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u591f\u771f\u7684\u5e2e\u52a9\u5230\u5927\u5bb6\u3002\u6211\u4e5f\u4f1a\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\uff0c\u9646\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\uff0c\u6709\u597d\u7684\u5efa\u8bae\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u975e\u5e38\u611f\u8c22\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241106\/1730893907672b5853522d2.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>mysql \u5173\u952e\u5b57\u6267\u884c\u987a\u5e8f\u89e3\u8bfb<\/strong><\/p>\n<p>\u5728\u7406\u89e3 mysql \u5173\u952e\u5b57\u7684\u6267\u884c\u987a\u5e8f\u65f6\uff0c\u6211\u4eec\u901a\u5e38\u770b\u5230\u4ee5\u4e0b\u6392\u5e8f\uff1a<\/p>\n<pre>FROM \u2192 ON \u2192 JOIN \u2192 WHERE \u2192 GROUP BY \u2192 HAVING \u2192 SELECT \u2192 DISTINCT \u2192 ORDER BY \u2192 LIMIT<\/pre>\n<p>\u4f46\u6709\u4eba\u53ef\u80fd\u4f1a\u7591\u60d1\uff0c\u4e3a\u4ec0\u4e48 in \u548c union \u4e24\u4e2a\u5173\u952e\u5b57\u6ca1\u6709\u51fa\u73b0\u5728\u6b64\u987a\u5e8f\u4e2d\uff1f<\/p>\n<p><strong>in\uff1awhere \u5b50\u53e5\u7684\u7b26\u53f7<\/strong><\/p>\n<p>in \u5b9e\u9645\u4e0a\u662f where \u5b50\u53e5\u4e2d\u7684\u4e00\u4e2a\u7b26\u53f7\uff0c\u4e0e between\u3001= \u548c like \u7b49\u7b26\u53f7\u7684\u4f5c\u7528\u7c7b\u4f3c\u3002\u5b83\u7528\u6765\u8868\u793a\u6761\u4ef6\uff0c\u56e0\u6b64\u9075\u5faa where \u5b50\u53e5\u7684\u6267\u884c\u987a\u5e8f\u3002<\/p>\n<p><strong>union\uff1a\u4e0d\u5f71\u54cd\u6267\u884c\u8ba1\u5212<\/strong><\/p>\n<p>union \u662f\u4e00\u79cd\u7ec4\u5408\u4e24\u4e2a\u6216\u591a\u4e2a\u67e5\u8be2\u7ed3\u679c\u7684\u5173\u952e\u5b57\u3002\u5b83\u4e0d\u5728\u6267\u884c\u8ba1\u5212\u7684\u987a\u5e8f\u4e2d\uff0c\u56e0\u4e3a\uff1a<\/p>\n<ul>\n<li>\u88ab union \u7684\u6bcf\u4e2a\u67e5\u8be2\u90fd\u4f1a\u72ec\u7acb\u89e3\u6790\u548c\u6267\u884c\u3002<\/li>\n<li>union \u4ec5\u4ec5\u5c06\u8fd9\u4e24\u4e2a\u67e5\u8be2\u7684\u7ed3\u679c\u5408\u5e76\u3002<\/li>\n<\/ul>\n<p>\u56e0\u6b64\uff0cin \u548c union \u6ca1\u6709\u53c2\u4e0e\u5230\u5e38\u89c4\u7684\u5173\u952e\u5b57\u6267\u884c\u987a\u5e8f\u4e2d\uff0c\u800c\u662f\u5728\u5404\u81ea\u7684\u7279\u5b9a\u4e0a\u4e0b\u6587\u4e2d\u6267\u884c\u3002<\/p>\n<p>\u672c\u7bc7\u5173\u4e8e\u300aMySQL \u5173\u952e\u5b57\u6267\u884c\u987a\u5e8f\uff1aIN \u548c UNION \u5728\u54ea\u91cc\uff1f\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>MySQL \u5173\u952e\u5b57\u6267\u884c\u987a\u5e8f\uff1aIN&#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":[101],"tags":[],"class_list":["post-200498","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200498","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=200498"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200498\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200498"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200498"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}