{"id":152329,"date":"2024-11-01T22:03:22","date_gmt":"2024-11-01T14:03:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152329\/"},"modified":"2024-11-01T22:03:23","modified_gmt":"2024-11-01T14:03:23","slug":"%e6%8e%a1%e7%94%a8sql%e6%ad%a3%e5%89%87%e6%9b%bf%e6%8f%9bmssql-%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90%e8%a9%b3%e8%a7%a3%ef%bc%88sql%e6%ad%a3%e5%89%87%e6%9b%bf%e6%8f%9bmssql%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152329\/","title":{"rendered":"\u63a1\u7528SQL\u6b63\u5247\u66ff\u63dbMSSQL\u2014\u2014\u6700\u4f73\u5be6\u8e10\u8a73\u89e3\uff08sql\u6b63\u5247\u66ff\u63dbmssql\uff09"},"content":{"rendered":"<h1 id=\"%e6%8e%a1%e7%94%a8sql%e6%ad%a3%e5%89%87%e6%9b%bf%e6%8f%9bmssql-%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90%e8%a9%b3%e8%a7%a3-EwmcblCBTV\">\u63a1\u7528SQL\u6b63\u5247\u66ff\u63dbMSSQL\u2014\u2014\u6700\u4f73\u5be6\u8e10\u8a73\u89e3<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u6578\u64da\u7ba1\u7406\u74b0\u5883\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u5df2\u6210\u70ba\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6838\u5fc3\u5de5\u5177\u3002\u7279\u5225\u662f\u5728Microsoft SQL Server\uff08MSSQL\uff09\u4e2d\uff0c\u6b63\u5247\u8868\u9054\u5f0f\u7684\u4f7f\u7528\u53ef\u4ee5\u5927\u5e45\u63d0\u5347\u6578\u64da\u8655\u7406\u7684\u9748\u6d3b\u6027\u548c\u6548\u7387\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728MSSQL\u4e2d\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u9032\u884c\u6578\u64da\u66ff\u63db\uff0c\u4e26\u63d0\u4f9b\u6700\u4f73\u5be6\u8e10\u7684\u8a73\u7d30\u8aaa\u660e\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-EwmcblCBTV\">\u4ec0\u9ebc\u662f\u6b63\u5247\u8868\u9054\u5f0f\uff1f<\/h2>\n<p>\u6b63\u5247\u8868\u9054\u5f0f\uff08Regular Expression\uff0c\u7c21\u7a31Regex\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u63cf\u8ff0\u5b57\u7b26\u4e32\u6a21\u5f0f\u7684\u5de5\u5177\u3002\u5b83\u53ef\u4ee5\u7528\u4f86\u6aa2\u67e5\u5b57\u7b26\u4e32\u662f\u5426\u7b26\u5408\u67d0\u7a2e\u6a21\u5f0f\u3001\u67e5\u627e\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u6a21\u5f0f\uff0c\u6216\u5c0d\u5b57\u7b26\u4e32\u9032\u884c\u66ff\u63db\u3002\u5728MSSQL\u4e2d\uff0c\u96d6\u7136\u4e0d\u76f4\u63a5\u652f\u6301\u6b63\u5247\u8868\u9054\u5f0f\uff0c\u4f46\u53ef\u4ee5\u901a\u904e\u4e00\u4e9b\u6280\u5de7\u4f86\u5be6\u73fe\u985e\u4f3c\u7684\u529f\u80fd\u3002<\/p>\n<h2 id=\"mssql%e4%b8%ad%e7%9a%84%e6%ad%a3%e5%89%87%e6%9b%bf%e6%8f%9b%e6%96%b9%e6%b3%95-EwmcblCBTV\">MSSQL\u4e2d\u7684\u6b63\u5247\u66ff\u63db\u65b9\u6cd5<\/h2>\n<p>\u5728MSSQL\u4e2d\uff0c\u5be6\u73fe\u6b63\u5247\u66ff\u63db\u7684\u5e38\u7528\u65b9\u6cd5\u662f\u4f7f\u7528\u5167\u5efa\u7684\u5b57\u7b26\u4e32\u51fd\u6578\uff0c\u5982 <code>REPLACE<\/code>\u3001<code>CHARINDEX<\/code> \u548c <code>PATINDEX<\/code>\u3002\u9019\u4e9b\u51fd\u6578\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u5728\u5b57\u7b26\u4e32\u4e2d\u67e5\u627e\u548c\u66ff\u63db\u7279\u5b9a\u7684\u6a21\u5f0f\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8replace%e5%87%bd%e6%95%b8-EwmcblCBTV\">\u4f7f\u7528REPLACE\u51fd\u6578<\/h3>\n<p><code>REPLACE<\/code> \u51fd\u6578\u7528\u65bc\u5c07\u5b57\u7b26\u4e32\u4e2d\u7684\u67d0\u500b\u5b50\u5b57\u7b26\u4e32\u66ff\u63db\u70ba\u53e6\u4e00\u500b\u5b50\u5b57\u7b26\u4e32\u3002\u5176\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>REPLACE ( string_expression , string_pattern , string_replacement )<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u5305\u542b\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u7684\u8868\u683c\uff0c\u6211\u5011\u60f3\u8981\u5c07\u6240\u6709\u7684\u300c@example.com\u300d\u66ff\u63db\u70ba\u300c@newdomain.com\u300d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE Users\nSET Email = REPLACE(Email, '@example.com', '@newdomain.com')\nWHERE Email LIKE '%@example.com%';<\/code><\/pre>\n<h3 id=\"%e4%bd%bf%e7%94%a8patindex%e5%92%8csubstring%e5%87%bd%e6%95%b8-EwmcblCBTV\">\u4f7f\u7528PATINDEX\u548cSUBSTRING\u51fd\u6578<\/h3>\n<p>\u5982\u679c\u9700\u8981\u66f4\u8907\u96dc\u7684\u6a21\u5f0f\u5339\u914d\uff0c\u53ef\u4ee5\u7d50\u5408\u4f7f\u7528 <code>PATINDEX<\/code> \u548c <code>SUBSTRING<\/code> \u51fd\u6578\u3002<code>PATINDEX<\/code> \u7528\u65bc\u67e5\u627e\u6a21\u5f0f\u5728\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\uff0c\u800c <code>SUBSTRING<\/code> \u5247\u7528\u65bc\u63d0\u53d6\u5b57\u7b26\u4e32\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u60f3\u8981\u66ff\u63db\u6240\u6709\u4ee5\u300cabc\u300d\u958b\u982d\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u9019\u6a23\u505a\uff1a<\/p>\n<pre><code>UPDATE MyTable\nSET MyColumn = 'new_value'\nWHERE PATINDEX('abc%', MyColumn) &gt; 0;<\/code><\/pre>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-EwmcblCBTV\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u6e2c\u8a66\u66ff\u63db\u64cd\u4f5c\uff1a<\/strong>\u5728\u9032\u884c\u5927\u898f\u6a21\u66ff\u63db\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u5728\u5c0f\u7bc4\u570d\u5167\u9032\u884c\u6e2c\u8a66\uff0c\u4ee5\u78ba\u4fdd\u66ff\u63db\u64cd\u4f5c\u4e0d\u6703\u5c0e\u81f4\u6578\u64da\u640d\u5931\u3002<\/li>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u4efb\u4f55\u6578\u64da\u4fee\u6539\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u60c5\u6cc1\u767c\u751f\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9\uff1a<\/strong>\u5728\u57f7\u884c\u66ff\u63db\u64cd\u4f5c\u6642\uff0c\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u64cd\u4f5c\u7684\u539f\u5b50\u6027\uff0c\u907f\u514d\u90e8\u5206\u66f4\u65b0\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/li>\n<li><strong>\u6027\u80fd\u8003\u91cf\uff1a<\/strong>\u5c0d\u65bc\u5927\u578b\u6578\u64da\u96c6\uff0c\u6b63\u5247\u66ff\u63db\u53ef\u80fd\u6703\u5f71\u97ff\u6027\u80fd\uff0c\u5efa\u8b70\u5728\u4f4e\u5cf0\u6642\u6bb5\u9032\u884c\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-EwmcblCBTV\">\u7d50\u8ad6<\/h2>\n<p>\u5728MSSQL\u4e2d\u4f7f\u7528\u6b63\u5247\u66ff\u63db\u96d6\u7136\u4e0d\u5982\u67d0\u4e9b\u5176\u4ed6\u6578\u64da\u5eab\u7cfb\u7d71\u90a3\u6a23\u76f4\u63a5\uff0c\u4f46\u901a\u904e\u9748\u6d3b\u904b\u7528\u5167\u5efa\u7684\u5b57\u7b26\u4e32\u51fd\u6578\uff0c\u6211\u5011\u4ecd\u7136\u53ef\u4ee5\u5be6\u73fe\u5f37\u5927\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\u3002\u9075\u5faa\u6700\u4f73\u5be6\u8e10\uff0c\u80fd\u5920\u6709\u6548\u5730\u63d0\u9ad8\u6578\u64da\u7ba1\u7406\u7684\u6548\u7387\u548c\u5b89\u5168\u6027\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u74b0\u5883\u4e2d\u5be6\u65bd\u9019\u4e9b\u6280\u8853\uff0c\u6216\u63a2\u7d22\u66f4\u591a\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MSSQL\u4e2d\u4f7f\u7528SQL\u6b63\u5247\u66ff\u63db\u7684\u6700\u4f73\u5be6\u8e10\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u7c21\u5316\u67e5\u8a62\u548c\u6578\u64da\u6e05\u7406\u904e\u7a0b\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-152329","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152329","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=152329"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152329\/revisions"}],"predecessor-version":[{"id":152330,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152329\/revisions\/152330"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=152329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=152329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=152329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}