{"id":181650,"date":"2024-11-09T18:49:20","date_gmt":"2024-11-09T10:49:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/181650\/"},"modified":"2024-11-09T18:49:20","modified_gmt":"2024-11-09T10:49:20","slug":"%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%a9%b6%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ablike%e5%85%a8%e9%83%a8%e6%93%8d%e4%bd%9c%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ablike","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/181650\/","title":{"rendered":"\u6df1\u5165\u63a2\u7a76\uff1a\u6578\u64da\u5eablike\u5168\u90e8\u64cd\u4f5c\u7684\u4f7f\u7528\u65b9\u6cd5\uff08\u6578\u64da\u5eablike\u5168\u90e8\uff09"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%a9%b6%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ablike%e5%85%a8%e9%83%a8%e6%93%8d%e4%bd%9c%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ablike-FMqudjSeUS\">\u6df1\u5165\u63a2\u7a76\uff1a\u6578\u64da\u5eabLIKE\u5168\u90e8\u64cd\u4f5c\u7684\u4f7f\u7528\u65b9\u6cd5\uff08\u6578\u64da\u5eabLIKE\u5168\u90e8\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cLIKE\u64cd\u4f5c\u7b26\u662f\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u5de5\u5177\uff0c\u7279\u5225\u662f\u5728\u9032\u884c\u5b57\u7b26\u4e32\u5339\u914d\u6642\u3002\u7121\u8ad6\u662f\u67e5\u8a62\u7528\u6236\u8cc7\u6599\u3001\u7522\u54c1\u4fe1\u606f\uff0c\u9084\u662f\u5176\u4ed6\u9700\u8981\u6a21\u7cca\u5339\u914d\u7684\u5834\u666f\uff0cLIKE\u90fd\u80fd\u63d0\u4f9b\u5f37\u5927\u7684\u652f\u6301\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eLIKE\u64cd\u4f5c\u7684\u4f7f\u7528\u65b9\u6cd5\u53ca\u5176\u5728\u6578\u64da\u5eab\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"like%e6%93%8d%e4%bd%9c%e7%ac%a6%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-FMqudjSeUS\">LIKE\u64cd\u4f5c\u7b26\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>LIKE\u64cd\u4f5c\u7b26\u4e3b\u8981\u7528\u65bcSQL\u67e5\u8a62\u4e2d\uff0c\u5e6b\u52a9\u7528\u6236\u9032\u884c\u6a21\u7cca\u67e5\u8a62\u3002\u5b83\u901a\u5e38\u8207SELECT\u8a9e\u53e5\u7d50\u5408\u4f7f\u7528\uff0c\u5141\u8a31\u7528\u6236\u6839\u64da\u7279\u5b9a\u6a21\u5f0f\u4f86\u67e5\u627e\u6578\u64da\u3002LIKE\u64cd\u4f5c\u7b26\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column1, column2, ...\nFROM table_name\nWHERE columnN LIKE pattern;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>pattern<\/code>\u53ef\u4ee5\u5305\u542b\u901a\u914d\u7b26\uff0c\u9019\u4f7f\u5f97LIKE\u64cd\u4f5c\u66f4\u52a0\u9748\u6d3b\u3002<\/p>\n<h2 id=\"%e9%80%9a%e9%85%8d%e7%ac%a6%e7%9a%84%e4%bd%bf%e7%94%a8-FMqudjSeUS\">\u901a\u914d\u7b26\u7684\u4f7f\u7528<\/h2>\n<p>\u5728LIKE\u64cd\u4f5c\u4e2d\uff0c\u4e3b\u8981\u6709\u5169\u7a2e\u901a\u914d\u7b26\uff1a<\/p>\n<ul>\n<li><strong>%<\/strong>\uff1a\u4ee3\u8868\u96f6\u500b\u6216\u591a\u500b\u5b57\u7b26\u3002\u4f8b\u5982\uff0c<code>WHERE name LIKE 'A%'<\/code>\u5c07\u5339\u914d\u6240\u6709\u4ee5\u5b57\u6bcdA\u958b\u982d\u7684\u540d\u5b57\u3002<\/li>\n<li><strong>_<\/strong>\uff1a\u4ee3\u8868\u55ae\u500b\u5b57\u7b26\u3002\u4f8b\u5982\uff0c<code>WHERE name LIKE 'A_'<\/code>\u5c07\u5339\u914d\u6240\u6709\u4ee5A\u958b\u982d\u4e14\u6709\u4e00\u500b\u5b57\u7b26\u7684\u540d\u5b57\u3002<\/li>\n<\/ul>\n<h2 id=\"like%e6%93%8d%e4%bd%9c%e7%9a%84%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8-FMqudjSeUS\">LIKE\u64cd\u4f5c\u7684\u5be6\u969b\u61c9\u7528<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9bLIKE\u64cd\u4f5c\u7684\u5be6\u969b\u61c9\u7528\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"1-%e6%9f%a5%e8%a9%a2%e4%bb%a5%e7%89%b9%e5%ae%9a%e5%ad%97%e6%af%8d%e9%96%8b%e9%a0%ad%e7%9a%84%e6%95%b8%e6%93%9a-FMqudjSeUS\">1. \u67e5\u8a62\u4ee5\u7279\u5b9a\u5b57\u6bcd\u958b\u982d\u7684\u6578\u64da<\/h3>\n<pre><code>SELECT * FROM users\nWHERE username LIKE 'J%';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u7528\u6236\u540d\u4ee5\u5b57\u6bcdJ\u958b\u982d\u7684\u7528\u6236\u3002<\/p>\n<h3 id=\"2-%e6%9f%a5%e8%a9%a2%e5%8c%85%e5%90%ab%e7%89%b9%e5%ae%9a%e5%ad%97%e6%af%8d%e7%9a%84%e6%95%b8%e6%93%9a-FMqudjSeUS\">2. \u67e5\u8a62\u5305\u542b\u7279\u5b9a\u5b57\u6bcd\u7684\u6578\u64da<\/h3>\n<pre><code>SELECT * FROM products\nWHERE product_name LIKE '%phone%';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u7522\u54c1\u540d\u7a31\u4e2d\u5305\u542b\u201cphone\u201d\u7684\u7522\u54c1\u3002<\/p>\n<h3 id=\"3-%e6%9f%a5%e8%a9%a2%e7%89%b9%e5%ae%9a%e9%95%b7%e5%ba%a6%e7%9a%84%e5%ad%97%e7%ac%a6%e4%b8%b2-FMqudjSeUS\">3. \u67e5\u8a62\u7279\u5b9a\u9577\u5ea6\u7684\u5b57\u7b26\u4e32<\/h3>\n<pre><code>SELECT * FROM employees\nWHERE employee_id LIKE '12_';<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u54e1\u5de5ID\u4ee5\u201c12\u201d\u958b\u982d\u4e14\u9577\u5ea6\u70ba3\u7684\u54e1\u5de5\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-FMqudjSeUS\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528LIKE\u64cd\u4f5c\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>LIKE\u64cd\u4f5c\u901a\u5e38\u4e0d\u5340\u5206\u5927\u5c0f\u5beb\uff0c\u5177\u9ad4\u53d6\u6c7a\u65bc\u6578\u64da\u5eab\u7684\u8a2d\u7f6e\u3002<\/li>\n<li>\u4f7f\u7528\u901a\u914d\u7b26\u6642\uff0c\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u5927\u578b\u6578\u64da\u96c6\u4e0a\u3002<\/li>\n<li>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528LIKE\u64cd\u4f5c\u53ef\u80fd\u6703\u5c0e\u81f4\u5168\u8868\u6383\u63cf\uff0c\u9019\u6703\u5f71\u97ff\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-FMqudjSeUS\">\u7d50\u8ad6<\/h2>\n<p>LIKE\u64cd\u4f5c\u7b26\u5728\u6578\u64da\u5eab\u67e5\u8a62\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u6a21\u7cca\u5339\u914d\u7684\u60c5\u6cc1\u4e0b\u3002\u901a\u904e\u9748\u6d3b\u904b\u7528\u901a\u914d\u7b26\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9ad8\u6548\u5730\u67e5\u8a62\u6240\u9700\u6578\u64da\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528LIKE\u6642\uff0c\u4e5f\u9700\u8003\u616e\u5230\u6027\u80fd\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002\u4e86\u89e3LIKE\u64cd\u4f5c\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6578\u64da\u5eab\u67e5\u8a62\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u76f8\u95dc\u6280\u8853\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\u3002\u6211\u5011\u63d0\u4f9b\u5404\u7a2e<a 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