{"id":156896,"date":"2024-11-02T21:06:19","date_gmt":"2024-11-02T13:06:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/156896\/"},"modified":"2024-11-02T21:06:20","modified_gmt":"2024-11-02T13:06:20","slug":"%e5%88%86%e6%9e%90%e6%af%94%e8%bc%83%e5%85%a9%e7%a8%ae-mysql-%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%8c%b9%e9%85%8d%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/156896\/","title":{"rendered":"\u5206\u6790\u6bd4\u8f03\u5169\u7a2e MySQL \u5b57\u7b26\u4e32\u5339\u914d\u6a21\u5f0f"},"content":{"rendered":"<h1 id=\"%e5%88%86%e6%9e%90%e6%af%94%e8%bc%83%e5%85%a9%e7%a8%ae-mysql-%e5%ad%97%e7%ac%a6%e4%b8%b2%e5%8c%b9%e9%85%8d%e6%a8%a1%e5%bc%8f-FuwlodRppl\">\u5206\u6790\u6bd4\u8f03\u5169\u7a2e MySQL \u5b57\u7b26\u4e32\u5339\u914d\u6a21\u5f0f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u5b57\u7b26\u4e32\u5339\u914d\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u4f7f\u7528 MySQL \u6642\u3002MySQL \u63d0\u4f9b\u4e86\u591a\u7a2e\u5b57\u7b26\u4e32\u5339\u914d\u6a21\u5f0f\uff0c\u5176\u4e2d\u6700\u5e38\u7528\u7684\u5169\u7a2e\u662f\u300cLIKE\u300d\u548c\u300cREGEXP\u300d\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u5206\u6790\u9019\u5169\u7a2e\u5339\u914d\u6a21\u5f0f\u7684\u7279\u9ede\u3001\u4f7f\u7528\u60c5\u5883\u53ca\u5176\u512a\u7f3a\u9ede\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u9078\u64c7\u6700\u9069\u5408\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"1-like-%e5%8c%b9%e9%85%8d%e6%a8%a1%e5%bc%8f-FuwlodRppl\">1. LIKE \u5339\u914d\u6a21\u5f0f<\/h2>\n<p>LIKE \u662f MySQL \u4e2d\u4e00\u7a2e\u7c21\u55ae\u7684\u5b57\u7b26\u4e32\u5339\u914d\u65b9\u5f0f\uff0c\u4e3b\u8981\u7528\u65bc\u67e5\u8a62\u4e2d\u3002\u5b83\u652f\u6301\u901a\u914d\u7b26\uff0c\u8b93\u7528\u6236\u80fd\u5920\u9032\u884c\u6a21\u7cca\u67e5\u8a62\u3002LIKE \u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT * FROM \u8868\u540d WHERE \u5217\u540d LIKE '\u6a21\u5f0f';<\/code><\/pre>\n<p>\u5728 LIKE \u4e2d\uff0c\u5e38\u7528\u7684\u901a\u914d\u7b26\u5305\u62ec\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\u60f3\u67e5\u8a62\u6240\u6709\u4ee5\u300cabc\u300d\u958b\u982d\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE username LIKE 'abc%';<\/code><\/pre>\n<h3 id=\"1-1-%e5%84%aa%e9%bb%9e-FuwlodRppl\">1.1 \u512a\u9ede<\/h3>\n<ul>\n<li>\u7c21\u55ae\u6613\u7528\uff0c\u9069\u5408\u57fa\u672c\u7684\u6a21\u7cca\u67e5\u8a62\u3002<\/li>\n<li>\u6027\u80fd\u8f03\u597d\uff0c\u7279\u5225\u662f\u5728\u6709\u7d22\u5f15\u7684\u60c5\u6cc1\u4e0b\u3002<\/li>\n<\/ul>\n<h3 id=\"1-2-%e7%bc%ba%e9%bb%9e-FuwlodRppl\">1.2 \u7f3a\u9ede<\/h3>\n<ul>\n<li>\u529f\u80fd\u6709\u9650\uff0c\u7121\u6cd5\u9032\u884c\u8907\u96dc\u7684\u6a21\u5f0f\u5339\u914d\u3002<\/li>\n<li>\u5c0d\u65bc\u5927\u6578\u64da\u96c6\uff0c\u6027\u80fd\u53ef\u80fd\u6703\u4e0b\u964d\u3002<\/li>\n<\/ul>\n<h2 id=\"2-regexp-%e5%8c%b9%e9%85%8d%e6%a8%a1%e5%bc%8f-FuwlodRppl\">2. REGEXP \u5339\u914d\u6a21\u5f0f<\/h2>\n<p>REGEXP \u662f MySQL \u4e2d\u7528\u65bc\u6b63\u5247\u8868\u9054\u5f0f\u5339\u914d\u7684\u529f\u80fd\uff0c\u63d0\u4f9b\u4e86\u66f4\u5f37\u5927\u7684\u5b57\u7b26\u4e32\u5339\u914d\u80fd\u529b\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT * FROM \u8868\u540d WHERE \u5217\u540d REGEXP '\u6b63\u5247\u8868\u9054\u5f0f';<\/code><\/pre>\n<p>\u4f7f\u7528 REGEXP\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5229\u7528\u6b63\u5247\u8868\u9054\u5f0f\u7684\u5f37\u5927\u529f\u80fd\u4f86\u9032\u884c\u66f4\u8907\u96dc\u7684\u67e5\u8a62\u3002\u4f8b\u5982\uff0c\u67e5\u8a62\u6240\u6709\u5305\u542b\u300cabc\u300d\u6216\u300cxyz\u300d\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE username REGEXP 'abc|xyz';<\/code><\/pre>\n<h3 id=\"2-1-%e5%84%aa%e9%bb%9e-FuwlodRppl\">2.1 \u512a\u9ede<\/h3>\n<ul>\n<li>\u652f\u6301\u8907\u96dc\u7684\u6a21\u5f0f\u5339\u914d\uff0c\u80fd\u5920\u8655\u7406\u591a\u7a2e\u60c5\u6cc1\u3002<\/li>\n<li>\u9748\u6d3b\u6027\u9ad8\uff0c\u9069\u5408\u9700\u8981\u9ad8\u7d1a\u67e5\u8a62\u7684\u5834\u666f\u3002<\/li>\n<\/ul>\n<h3 id=\"2-2-%e7%bc%ba%e9%bb%9e-FuwlodRppl\">2.2 \u7f3a\u9ede<\/h3>\n<ul>\n<li>\u6027\u80fd\u8f03\u5dee\uff0c\u7279\u5225\u662f\u5728\u5927\u6578\u64da\u96c6\u4e0a\uff0c\u56e0\u70ba\u6b63\u5247\u8868\u9054\u5f0f\u7684\u8a08\u7b97\u6210\u672c\u8f03\u9ad8\u3002<\/li>\n<li>\u8a9e\u6cd5\u8f03\u70ba\u8907\u96dc\uff0c\u5c0d\u65bc\u4e0d\u719f\u6089\u6b63\u5247\u8868\u9054\u5f0f\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u5b78\u7fd2\u66f2\u7dda\u8f03\u9661\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e4%bd%95%e6%99%82%e4%bd%bf%e7%94%a8-like-%e6%88%96-regexp-FuwlodRppl\">3. \u4f55\u6642\u4f7f\u7528 LIKE \u6216 REGEXP<\/h2>\n<p>\u9078\u64c7\u4f7f\u7528 LIKE \u9084\u662f REGEXP \u4e3b\u8981\u53d6\u6c7a\u65bc\u5177\u9ad4\u7684\u9700\u6c42\u3002\u5982\u679c\u67e5\u8a62\u9700\u6c42\u76f8\u5c0d\u7c21\u55ae\uff0c\u4e14\u6027\u80fd\u662f\u4e3b\u8981\u8003\u91cf\uff0c\u5247\u4f7f\u7528 LIKE \u662f\u66f4\u597d\u7684\u9078\u64c7\u3002\u76f8\u53cd\uff0c\u7576\u9700\u8981\u9032\u884c\u8907\u96dc\u7684\u6a21\u5f0f\u5339\u914d\u6642\uff0cREGEXP \u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u9748\u6d3b\u6027\u548c\u529f\u80fd\u3002<\/p>\n<h2 id=\"4-%e7%b8%bd%e7%b5%90-FuwlodRppl\">4. \u7e3d\u7d50<\/h2>\n<p>\u5728 MySQL \u4e2d\uff0cLIKE \u548c REGEXP \u662f\u5169\u7a2e\u5e38\u7528\u7684\u5b57\u7b26\u4e32\u5339\u914d\u6a21\u5f0f\uff0c\u5404\u6709\u5176\u512a\u7f3a\u9ede\u3002LIKE \u9069\u5408\u7c21\u55ae\u7684\u6a21\u7cca\u67e5\u8a62\uff0c\u800c REGEXP \u5247\u9069\u5408\u9700\u8981\u8907\u96dc\u5339\u914d\u7684\u60c5\u6cc1\u3002\u6839\u64da\u5177\u9ad4\u7684\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u5339\u914d\u6a21\u5f0f\uff0c\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u61c9\u7528\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5169\u7a2e MySQL \u5b57\u7b26\u4e32\u5339\u914d\u6a21\u5f0f\u7684\u5206\u6790\u8207\u6bd4\u8f03\uff0c\u4e86\u89e3\u5176\u6027\u80fd\u3001\u7528\u6cd5\u53ca\u9069\u7528\u5834\u666f\uff0c\u52a9\u4f60\u512a\u5316\u6578\u64da\u67e5\u8a62\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-156896","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156896","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=156896"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156896\/revisions"}],"predecessor-version":[{"id":156897,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156896\/revisions\/156897"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=156896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=156896"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=156896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}