{"id":199667,"date":"2025-05-06T10:53:24","date_gmt":"2025-05-06T02:53:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199667\/"},"modified":"2025-05-06T10:53:24","modified_gmt":"2025-05-06T02:53:24","slug":"%e5%af%bc%e8%87%b4mysql%e7%b4%a2%e5%bc%95%e5%a4%b1%e6%95%88%e7%9a%84%e5%8e%9f%e5%9b%a0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199667\/","title":{"rendered":"\u5bfc\u81f4mysql\u7d22\u5f15\u5931\u6548\u7684\u539f\u56e0"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5bfc\u81f4mysql\u7d22\u5f15\u5931\u6548\u7684\u539f\u56e0<\/h1>\n<p>\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u6211\u4eec\u8981\u52aa\u529b\u5b66\u4e60\u5566\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u8bf7\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427\uff01\u4e0b\u6587\u4e2d\u7684\u5185\u5bb9\u6211\u4eec\u4e3b\u8981\u4f1a\u6d89\u53ca\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5728\u9605\u8bfb\u672c\u6587\u8fc7\u7a0b\u4e2d\u6709\u9047\u5230\u4e0d\u6e05\u695a\u7684\u5730\u65b9\uff0c\u6b22\u8fce\u7559\u8a00\u5440\uff01\u6211\u4eec\u4e00\u8d77\u8ba8\u8bba\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<p>MySQL\u7d22\u5f15\u5931\u6548\u7684\u51e0\u79cd\u60c5\u51b5\u53ca\u4ee3\u7801\u793a\u4f8b<\/p>\n<p>\u5f15\u8a00\uff1a<br \/>\u5728MySQL\u6570\u636e\u5e93\u4e2d\uff0c\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u7684\u91cd\u8981\u56e0\u7d20\u4e4b\u4e00\u3002\u7136\u800c\uff0c\u6709\u65f6\u5019\u6211\u4eec\u4f1a\u53d1\u73b0\u7d22\u5f15\u5e76\u6ca1\u6709\u8d77\u5230\u9884\u671f\u7684\u4f5c\u7528\uff0c\u67e5\u8be2\u6027\u80fd\u5e76\u6ca1\u6709\u5f97\u5230\u63d0\u5347\uff0c\u751a\u81f3\u8fd8\u4f1a\u5bfc\u81f4\u67e5\u8be2\u53d8\u5f97\u66f4\u6162\u3002\u7a76\u5176\u539f\u56e0\uff0c\u5f88\u53ef\u80fd\u662f\u7d22\u5f15\u5931\u6548\u4e86\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u51e0\u79cd\u5e38\u89c1\u7684\u5bfc\u81f4MySQL\u7d22\u5f15\u5931\u6548\u7684\u60c5\u51b5\uff0c\u5e76\u7ed9\u51fa\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u4e00\u3001\u4f7f\u7528\u51fd\u6570\u6216\u8868\u8fbe\u5f0f\u5bf9\u7d22\u5f15\u5217\u8fdb\u884c\u8fd0\u7b97<br \/>\u5982\u679c\u5728\u67e5\u8be2\u8bed\u53e5\u4e2d\u5bf9\u7d22\u5f15\u5217\u8fdb\u884c\u4e86\u51fd\u6570\u8c03\u7528\u6216\u8868\u8fbe\u5f0f\u8fd0\u7b97\uff0c\u5c06\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\uff0cMySQL\u5c06\u65e0\u6cd5\u5229\u7528\u7d22\u5f15\u8fdb\u884c\u5feb\u901f\u67e5\u8be2\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre>-- \u521b\u5efa\u8868\nCREATE TABLE `user_address` (\n  `id` int(11) NOT NULL AUTO_INCREMENT,\n  `user_id` int(11) DEFAULT NULL,\n  `address` varchar(255) DEFAULT NULL,\n  PRIMARY KEY (`id`),\n  KEY `idx_user_id` (`user_id`)\n) ENGINE=InnoDB DEFAULT CHARSET=utf8;\n\n-- \u67e5\u8be2\u793a\u4f8b\uff0c\u7d22\u5f15\u5931\u6548\nSELECT * FROM `user_address` WHERE YEAR(`address`) = 2022;<\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u7531\u4e8e\u5bf9<code>address<\/code>\u5217\u4f7f\u7528\u4e86<code>YEAR<\/code>\u51fd\u6570\u8fdb\u884c\u8fd0\u7b97\uff0c\u4f7f\u5f97MySQL\u65e0\u6cd5\u5229\u7528\u7d22\u5f15<code>idx_user_id<\/code>\uff0c\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\uff0c\u67e5\u8be2\u6548\u7387\u4e0b\u964d\u3002<\/p>\n<p>\u4e8c\u3001\u5728\u7d22\u5f15\u5217\u4e0a\u4f7f\u7528\u4e86\u51fd\u6570<br \/>\u5728\u7d22\u5f15\u5217\u4e0a\u4f7f\u7528\u51fd\u6570\u4e5f\u4f1a\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\uff0c\u6bd4\u5982\u4e0b\u9762\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>-- \u67e5\u8be2\u793a\u4f8b\uff0c\u7d22\u5f15\u5931\u6548\nSELECT * FROM `user_address` WHERE LEFT(`address`, 5) = 'China';<\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u7531\u4e8e\u5bf9<code>address<\/code>\u5217\u4f7f\u7528\u4e86<code>LEFT<\/code>\u51fd\u6570\uff0c\u540c\u6837\u4f7f\u5f97MySQL\u65e0\u6cd5\u5229\u7528\u7d22\u5f15<code>idx_user_id<\/code>\uff0c\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\u3002<\/p>\n<p>\u4e09\u3001\u4f7f\u7528LIKE\u64cd\u4f5c\u7b26\u6a21\u7cca\u67e5\u8be2<br \/>\u5728\u4f7f\u7528LIKE\u64cd\u4f5c\u7b26\u8fdb\u884c\u6a21\u7cca\u67e5\u8be2\u65f6\uff0c\u5982\u679c\u4e0d\u662f\u4ee5%\u901a\u914d\u7b26\u5f00\u5934\uff0c\u5c06\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre>-- \u67e5\u8be2\u793a\u4f8b\uff0c\u7d22\u5f15\u5931\u6548\nSELECT * FROM `user_address` WHERE `address` LIKE 'Shanghai%';<\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u7531\u4e8eLIKE\u64cd\u4f5c\u7b26\u4e0d\u662f\u4ee5%\u901a\u914d\u7b26\u5f00\u5934\uff0cMySQL\u65e0\u6cd5\u5229\u7528\u7d22\u5f15<code>idx_user_id<\/code>\uff0c\u67e5\u8be2\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n<p>\u56db\u3001\u67e5\u8be2\u6761\u4ef6\u4e2d\u4f7f\u7528OR\u5173\u952e\u5b57<br \/>\u5728\u67e5\u8be2\u6761\u4ef6\u4e2d\u4f7f\u7528OR\u5173\u952e\u5b57\uff0c\u5982\u679c\u6bcf\u4e2aOR\u5b50\u53e5\u4e2d\u7684\u5217\u6ca1\u6709\u7d22\u5f15\uff0c\u5c06\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\u3002\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<pre>-- \u67e5\u8be2\u793a\u4f8b\uff0c\u7d22\u5f15\u5931\u6548\nSELECT * FROM `user_address` WHERE `user_id` = 1 OR `address` = 'Shanghai';<\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u7531\u4e8e<code>user_id<\/code>\u548c<code>address<\/code>\u4e24\u5217\u5404\u81ea\u6709\u81ea\u5df1\u7684\u7d22\u5f15\uff0c\u4f46\u5728OR\u5173\u952e\u5b57\u8fde\u63a5\u7684\u4e24\u4e2a\u6761\u4ef6\u4e2d\u5206\u522b\u4f7f\u7528\u4e86\u4e0d\u540c\u7684\u7d22\u5f15\uff0c\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\u3002<\/p>\n<p>\u603b\u7ed3\uff1a<br \/>\u5728\u4f7f\u7528MySQL\u6570\u636e\u5e93\u65f6\uff0c\u6211\u4eec\u9700\u8981\u907f\u514d\u4ee5\u4e0a\u51e0\u79cd\u60c5\u51b5\u5bfc\u81f4\u7d22\u5f15\u5931\u6548\u7684\u573a\u666f\u3002\u5728\u7f16\u5199SQL\u8bed\u53e5\u65f6\uff0c\u5e94\u5c3d\u91cf\u907f\u514d\u5bf9\u7d22\u5f15\u5217\u8fdb\u884c\u51fd\u6570\u6216\u8868\u8fbe\u5f0f\u8fd0\u7b97\uff0c\u5e76\u4f7f\u7528\u9002\u5f53\u7684\u64cd\u4f5c\u7b26\u548c\u8fde\u63a5\u65b9\u5f0f\u6765\u6784\u9020\u67e5\u8be2\u6761\u4ef6\uff0c\u4ee5\u786e\u4fdd\u7d22\u5f15\u80fd\u591f\u6709\u6548\u5730\u5e94\u7528\u4e8e\u67e5\u8be2\u64cd\u4f5c\uff0c\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n<p>\u53c2\u8003\u6587\u732e\uff1a<br \/>MySQL\u5b98\u65b9\u6587\u6863\uff08https:\/\/dev.mysql.com\/doc\/\uff09<\/p>\n<p>\uff08\u6ce8\uff1a\u4ee5\u4e0a\u793a\u4f8b\u4e2d\u7684\u8868\u7ed3\u6784\u548c\u67e5\u8be2\u8bed\u53e5\u4ec5\u4f5c\u4e3a\u793a\u8303\uff0c\u5b9e\u9645\u60c5\u51b5\u53ef\u80fd\u56e0\u6570\u636e\u5e93\u7248\u672c\u3001\u7d22\u5f15\u8bbe\u7f6e\u7b49\u56e0\u7d20\u800c\u6709\u6240\u4e0d\u540c\u3002\uff09<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u5bfc\u81f4mysql\u7d22\u5f15\u5931\u6548\u7684\u539f\u56e0\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n<dl>\n<dt>\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5bfc\u81f4mysql\u7d22\u5f15\u5931\u6548\u7684\u539f\u56e0 \u4ece&#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-199667","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199667","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=199667"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199667\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}