{"id":76236,"date":"2024-10-16T04:59:14","date_gmt":"2024-10-15T20:59:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76236\/"},"modified":"2024-10-16T04:59:14","modified_gmt":"2024-10-15T20:59:14","slug":"mysql%e5%85%a5%e9%96%80%ef%bc%9a%e4%bd%bf%e7%94%a8like%e9%81%8b%e7%ae%97%e7%ac%a6%e5%9c%a8%e4%b8%80%e5%88%97%e4%b8%ad%e6%90%9c%e7%b4%a2%e6%8c%87%e5%ae%9a%e7%9a%84%e6%a8%a1%e5%bc%8f%e3%80%82","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76236\/","title":{"rendered":"MySQL\u5165\u9580\uff1a\u4f7f\u7528LIKE\u904b\u7b97\u7b26\u5728\u4e00\u5217\u4e2d\u641c\u7d22\u6307\u5b9a\u7684\u6a21\u5f0f\u3002"},"content":{"rendered":"<h1 id=\"mysql%e5%85%a5%e9%96%80%ef%bc%9a%e4%bd%bf%e7%94%a8like%e9%81%8b%e7%ae%97%e7%ac%a6%e5%9c%a8%e4%b8%80%e5%88%97%e4%b8%ad%e6%90%9c%e7%b4%a2%e6%8c%87%e5%ae%9a%e7%9a%84%e6%a8%a1%e5%bc%8f-HnjIcPdRAT\">MySQL\u5165\u9580\uff1a\u4f7f\u7528LIKE\u904b\u7b97\u7b26\u5728\u4e00\u5217\u4e2d\u641c\u7d22\u6307\u5b9a\u7684\u6a21\u5f0f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMySQL\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u5b83\u63d0\u4f9b\u4e86\u591a\u7a2e\u67e5\u8a62\u529f\u80fd\uff0c\u8b93\u7528\u6236\u80fd\u5920\u9748\u6d3b\u5730\u6aa2\u7d22\u6578\u64da\u3002\u5176\u4e2d\uff0c<strong>LIKE<\/strong>\u904b\u7b97\u7b26\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u6839\u64da\u7279\u5b9a\u6a21\u5f0f\u641c\u7d22\u6578\u64da\u6642\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528LIKE\u904b\u7b97\u7b26\u5728MySQL\u4e2d\u9032\u884c\u6a21\u5f0f\u5339\u914d\u3002<\/p>\n<h2 id=\"like%e9%81%8b%e7%ae%97%e7%ac%a6%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95-HnjIcPdRAT\">LIKE\u904b\u7b97\u7b26\u7684\u57fa\u672c\u7528\u6cd5<\/h2>\n<p>LIKE\u904b\u7b97\u7b26\u4e3b\u8981\u7528\u65bc\u5728SQL\u67e5\u8a62\u4e2d\u9032\u884c\u6a21\u7cca\u5339\u914d\u3002\u5b83\u901a\u5e38\u8207<code>SELECT<\/code>\u8a9e\u53e5\u4e00\u8d77\u4f7f\u7528\uff0c\u4e26\u4e14\u53ef\u4ee5\u8207\u901a\u914d\u7b26\u7d50\u5408\u4f7f\u7528\u3002MySQL\u4e2d\u6709\u5169\u500b\u4e3b\u8981\u7684\u901a\u914d\u7b26\uff1a<\/p>\n<ul>\n<li><strong>%<\/strong>\uff1a\u4ee3\u8868\u96f6\u500b\u6216\u591a\u500b\u5b57\u7b26\u3002<\/li>\n<li><strong>_<\/strong>\uff1a\u4ee3\u8868\u55ae\u500b\u5b57\u7b26\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employees<\/code>\u7684\u8868\u683c\uff0c\u4e26\u4e14\u60f3\u8981\u67e5\u627e\u6240\u6709\u540d\u5b57\u4ee5\u201cJ\u201d\u958b\u982d\u7684\u54e1\u5de5\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM employees WHERE name LIKE 'J%';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u540d\u5b57\u4ee5\u201cJ\u201d\u958b\u982d\u7684\u54e1\u5de5\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e9%80%9a%e9%85%8d%e7%ac%a6%e9%80%b2%e8%a1%8c%e6%9b%b4%e8%a4%87%e9%9b%9c%e7%9a%84%e6%9f%a5%e8%a9%a2-HnjIcPdRAT\">\u4f7f\u7528\u901a\u914d\u7b26\u9032\u884c\u66f4\u8907\u96dc\u7684\u67e5\u8a62<\/h2>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u6a21\u5f0f\u5339\u914d\uff0cLIKE\u904b\u7b97\u7b26\u9084\u53ef\u4ee5\u7528\u65bc\u66f4\u8907\u96dc\u7684\u67e5\u8a62\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u627e\u540d\u5b57\u4e2d\u5305\u542b\u201can\u201d\u7684\u6240\u6709\u54e1\u5de5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM employees WHERE name LIKE '%an%';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u540d\u5b57\u4e2d\u5305\u542b\u201can\u201d\u7684\u54e1\u5de5\u8a18\u9304\uff0c\u4e0d\u8ad6\u5176\u4f4d\u7f6e\u3002<\/p>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u627e\u540d\u5b57\u4e2d\u7b2c\u4e8c\u500b\u5b57\u7b26\u662f\u201ca\u201d\u7684\u6240\u6709\u54e1\u5de5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u5283\u7dda\u901a\u914d\u7b26\uff1a<\/p>\n<pre><code>SELECT * FROM employees WHERE name LIKE '_a%';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u540d\u5b57\u4e2d\u7b2c\u4e8c\u500b\u5b57\u7b26\u70ba\u201ca\u201d\u7684\u54e1\u5de5\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e7%b5%90%e5%90%88%e5%85%b6%e4%bb%96%e6%a2%9d%e4%bb%b6%e4%bd%bf%e7%94%a8like%e9%81%8b%e7%ae%97%e7%ac%a6-HnjIcPdRAT\">\u7d50\u5408\u5176\u4ed6\u689d\u4ef6\u4f7f\u7528LIKE\u904b\u7b97\u7b26<\/h2>\n<p>LIKE\u904b\u7b97\u7b26\u4e5f\u53ef\u4ee5\u8207\u5176\u4ed6\u689d\u4ef6\u7d50\u5408\u4f7f\u7528\uff0c\u4ee5\u9032\u884c\u66f4\u7cbe\u78ba\u7684\u67e5\u8a62\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u627e\u6240\u6709\u540d\u5b57\u4ee5\u201cJ\u201d\u958b\u982d\u4e14\u5e74\u9f61\u5927\u65bc30\u6b72\u7684\u54e1\u5de5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM employees WHERE name LIKE 'J%' AND age &gt; 30;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u66f4\u6709\u6548\u5730\u7be9\u9078\u6578\u64da\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-HnjIcPdRAT\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528LIKE\u904b\u7b97\u7b26\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>LIKE\u904b\u7b97\u7b26\u7684\u67e5\u8a62\u901a\u5e38\u4e0d\u6703\u4f7f\u7528\u7d22\u5f15\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u5927\u578b\u6578\u64da\u96c6\u4e0a\u3002<\/li>\n<li>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528LIKE\u904b\u7b97\u7b26\u53ef\u80fd\u6703\u5c0e\u81f4\u5168\u8868\u6383\u63cf\uff0c\u9019\u6703\u5f71\u97ff\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u5728\u9032\u884c\u5927\u5c0f\u5beb\u654f\u611f\u7684\u67e5\u8a62\u6642\uff0cMySQL\u7684\u9ed8\u8a8d\u884c\u70ba\u662f\u5927\u5c0f\u5beb\u4e0d\u654f\u611f\u7684\uff0c\u9019\u53d6\u6c7a\u65bc\u5b57\u7b26\u96c6\u548c\u6392\u5e8f\u898f\u5247\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-HnjIcPdRAT\">\u7e3d\u7d50<\/h2>\n<p>LIKE\u904b\u7b97\u7b26\u662fMySQL\u4e2d\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u9032\u884c\u9748\u6d3b\u7684\u6578\u64da\u6aa2\u7d22\u3002\u901a\u904e\u4f7f\u7528\u901a\u914d\u7b26\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u67e5\u627e\u7b26\u5408\u7279\u5b9a\u6a21\u5f0f\u7684\u6578\u64da\u3002\u7121\u8ad6\u662f\u9032\u884c\u57fa\u672c\u7684\u6a21\u5f0f\u5339\u914d\uff0c\u9084\u662f\u7d50\u5408\u5176\u4ed6\u689d\u4ef6\u9032\u884c\u8907\u96dc\u67e5\u8a62\uff0cLIKE\u904b\u7b97\u7b26\u90fd\u80fd\u63d0\u4f9b\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\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\u6258\u7ba1\u60a8\u7684MySQL\u6578\u64da\u5eab\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u63d0\u4f9b\u7a69\u5b9a\u548c\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728MySQL\u4e2d\u4f7f\u7528LIKE\u904b\u7b97\u7b26\uff0c\u8f15\u9b06\u641c\u5c0b\u6307\u5b9a\u6a21\u5f0f\uff0c\u63d0\u5347\u8cc7\u6599\u67e5\u8a62\u6548\u7387\uff0c\u9069\u5408\u521d\u5b78\u8005\u5165\u9580\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-76236","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76236","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=76236"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76236\/revisions"}],"predecessor-version":[{"id":76237,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76236\/revisions\/76237"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}