{"id":160053,"date":"2024-11-03T19:53:20","date_gmt":"2024-11-03T11:53:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160053\/"},"modified":"2024-11-03T19:53:21","modified_gmt":"2024-11-03T11:53:21","slug":"mysql-%e6%95%99%e7%a8%8b-mysql-%e6%ad%a3%e5%89%87%e8%a1%a8%e9%81%94%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160053\/","title":{"rendered":"MYSQL \u6559\u7a0b MySQL \u6b63\u5247\u8868\u9054\u5f0f"},"content":{"rendered":"<h1 id=\"mysql-%e6%95%99%e7%a8%8b%ef%bc%9amysql-%e6%ad%a3%e5%89%87%e8%a1%a8%e9%81%94%e5%bc%8f-kBFkJvQPOf\">MySQL \u6559\u7a0b\uff1aMySQL \u6b63\u5247\u8868\u9054\u5f0f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cMySQL \u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u5b83\u63d0\u4f9b\u4e86\u591a\u7a2e\u529f\u80fd\u4f86\u8655\u7406\u548c\u67e5\u8a62\u6578\u64da\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u6b63\u5247\u8868\u9054\u5f0f\uff08Regular Expressions\uff09\u3002\u6b63\u5247\u8868\u9054\u5f0f\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4f86\u5339\u914d\u548c\u64cd\u4f5c\u5b57\u7b26\u4e32\u3002\u672c\u6587\u5c07\u4ecb\u7d39 MySQL \u4e2d\u7684\u6b63\u5247\u8868\u9054\u5f0f\u7684\u57fa\u672c\u7528\u6cd5\u53ca\u5176\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%ad%a3%e5%89%87%e8%a1%a8%e9%81%94%e5%bc%8f%ef%bc%9f-kBFkJvQPOf\">\u4ec0\u9ebc\u662f\u6b63\u5247\u8868\u9054\u5f0f\uff1f<\/h2>\n<p>\u6b63\u5247\u8868\u9054\u5f0f\u662f\u4e00\u7a2e\u7528\u65bc\u63cf\u8ff0\u5b57\u7b26\u4e32\u6a21\u5f0f\u7684\u8a9e\u6cd5\u3002\u5b83\u53ef\u4ee5\u7528\u4f86\u6aa2\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u7b26\u5408\u67d0\u7a2e\u6a21\u5f0f\uff0c\u6216\u5f9e\u5b57\u7b26\u4e32\u4e2d\u63d0\u53d6\u7279\u5b9a\u7684\u90e8\u5206\u3002\u5728 MySQL \u4e2d\uff0c\u6b63\u5247\u8868\u9054\u5f0f\u4e3b\u8981\u7528\u65bc <code>WHERE<\/code> \u5b50\u53e5\u4e2d\uff0c\u4ee5\u4fbf\u9032\u884c\u66f4\u9748\u6d3b\u7684\u67e5\u8a62\u3002<\/p>\n<h2 id=\"mysql-%e4%b8%ad%e7%9a%84%e6%ad%a3%e5%89%87%e8%a1%a8%e9%81%94%e5%bc%8f%e8%aa%9e%e6%b3%95-kBFkJvQPOf\">MySQL \u4e2d\u7684\u6b63\u5247\u8868\u9054\u5f0f\u8a9e\u6cd5<\/h2>\n<p>\u5728 MySQL \u4e2d\uff0c\u6b63\u5247\u8868\u9054\u5f0f\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><code>REGEXP<\/code>\uff1a\u7528\u65bc\u5339\u914d\u6b63\u5247\u8868\u9054\u5f0f\u3002<\/li>\n<li><code>NOT REGEXP<\/code>\uff1a\u7528\u65bc\u4e0d\u5339\u914d\u6b63\u5247\u8868\u9054\u5f0f\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\u683c\uff0c\u5305\u542b <code>username<\/code> \u6b04\u4f4d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u67e5\u627e\u6240\u6709\u4ee5\u5b57\u6bcd &#8220;a&#8221; \u958b\u982d\u7684\u7528\u6236\u540d\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE username REGEXP '^a';<\/code><\/pre>\n<h2 id=\"%e5%b8%b8%e7%94%a8%e7%9a%84%e6%ad%a3%e5%89%87%e8%a1%a8%e9%81%94%e5%bc%8f%e6%a8%a1%e5%bc%8f-kBFkJvQPOf\">\u5e38\u7528\u7684\u6b63\u5247\u8868\u9054\u5f0f\u6a21\u5f0f<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u6b63\u5247\u8868\u9054\u5f0f\u6a21\u5f0f\uff1a<\/p>\n<ul>\n<li><code>^<\/code>\uff1a\u8868\u793a\u5b57\u7b26\u4e32\u7684\u958b\u59cb\u3002<\/li>\n<li><code>$<\/code>\uff1a\u8868\u793a\u5b57\u7b26\u4e32\u7684\u7d50\u675f\u3002<\/li>\n<li><code>.<\/code>\uff1a\u8868\u793a\u4efb\u610f\u55ae\u500b\u5b57\u7b26\u3002<\/li>\n<li><code>*<\/code>\uff1a\u8868\u793a\u524d\u4e00\u500b\u5b57\u7b26\u51fa\u73fe\u96f6\u6b21\u6216\u591a\u6b21\u3002<\/li>\n<li><code>+<\/code>\uff1a\u8868\u793a\u524d\u4e00\u500b\u5b57\u7b26\u51fa\u73fe\u4e00\u6b21\u6216\u591a\u6b21\u3002<\/li>\n<li><code>?<\/code>\uff1a\u8868\u793a\u524d\u4e00\u500b\u5b57\u7b26\u51fa\u73fe\u96f6\u6b21\u6216\u4e00\u6b21\u3002<\/li>\n<li><code>[abc]<\/code>\uff1a\u8868\u793a\u5339\u914d\u5b57\u7b26\u96c6\u4e2d\u7684\u4efb\u610f\u4e00\u500b\u5b57\u7b26\u3002<\/li>\n<li><code>[^abc]<\/code>\uff1a\u8868\u793a\u5339\u914d\u4e0d\u5728\u5b57\u7b26\u96c6\u4e2d\u7684\u4efb\u610f\u5b57\u7b26\u3002<\/li>\n<li><code>(abc|def)<\/code>\uff1a\u8868\u793a\u5339\u914d &#8220;abc&#8221; \u6216 &#8220;def&#8221;\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e7%a4%ba%e4%be%8b-kBFkJvQPOf\">\u5be6\u969b\u61c9\u7528\u793a\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u60f3\u8981\u67e5\u627e\u6240\u6709\u5305\u542b\u6578\u5b57\u7684\u7528\u6236\u540d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE username REGEXP '[0-9]';<\/code><\/pre>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u627e\u6240\u6709\u4ee5 &#8220;admin&#8221; \u958b\u982d\u7684\u7528\u6236\u540d\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE username REGEXP '^admin';<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-kBFkJvQPOf\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>MySQL \u7684\u6b63\u5247\u8868\u9054\u5f0f\u662f\u5340\u5206\u5927\u5c0f\u5beb\u7684\u3002\u5982\u679c\u9700\u8981\u4e0d\u5340\u5206\u5927\u5c0f\u5beb\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>LOWER()<\/code> \u51fd\u6578\u3002<\/li>\n<li>\u6b63\u5247\u8868\u9054\u5f0f\u7684\u6027\u80fd\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u901f\u5ea6\uff0c\u7279\u5225\u662f\u5728\u5927\u578b\u6578\u64da\u96c6\u4e0a\u3002\u56e0\u6b64\uff0c\u61c9\u8b39\u614e\u4f7f\u7528\u3002<\/li>\n<li>MySQL \u7684\u6b63\u5247\u8868\u9054\u5f0f\u652f\u6301 POSIX \u6a19\u6e96\uff0c\u4f46\u4e0d\u652f\u6301 Perl \u98a8\u683c\u7684\u6b63\u5247\u8868\u9054\u5f0f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-kBFkJvQPOf\">\u7e3d\u7d50<\/h2>\n<p>MySQL \u4e2d\u7684\u6b63\u5247\u8868\u9054\u5f0f\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u9032\u884c\u9748\u6d3b\u7684\u6578\u64da\u67e5\u8a62\u3002\u901a\u904e\u638c\u63e1\u6b63\u5247\u8868\u9054\u5f0f\u7684\u57fa\u672c\u8a9e\u6cd5\u548c\u5e38\u7528\u6a21\u5f0f\uff0c\u60a8\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u8655\u7406\u548c\u5206\u6790\u6578\u64da\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\u4f86\u652f\u6301\u60a8\u7684 MySQL \u6578\u64da\u5eab\u904b\u884c\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u9805\u76ee\u9084\u662f\u5927\u578b\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u63d0\u5347\u60a8\u7684\u696d\u52d9\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 MySQL \u6559\u7a0b\u4e2d\u7684\u6b63\u5247\u8868\u9054\u5f0f\uff0c\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u67e5\u8a62\u4e2d\u6709\u6548\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u9032\u884c\u6a21\u5f0f\u5339\u914d\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-160053","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160053","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=160053"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160053\/revisions"}],"predecessor-version":[{"id":160054,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160053\/revisions\/160054"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160053"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160053"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160053"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}