SQLSERVER自定义正则匹配函数

candyl6

sqlserver数据库没有自带正则匹配函数，可以创建CLR程序集来实现，这里使用的是C#

先上创建方法

1. 启用数据库的 CLR 集成，默认是关闭的

   sp_configure 'clr enabled', 1;
   RECONFIGURE;

   2.创建程序集，这里FROM后面的内容其实就是将dll文件转换后的十六进制

   CREATE ASSEMBLY RegexAssembly
   FROM 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   WITH PERMISSION_SET = SAFE;

   3.创建函数，这里RegexAssembly.[RegexFunctions.RegexFunctions].RegexMatch要按照程序集名.[namespace.类名].方法名方式补充完整

   CREATE FUNCTION dbo.RegexMatch( @input NVARCHAR(MAX), @pattern NVARCHAR(MAX))
   RETURNS BIT
   AS EXTERNAL NAME RegexAssembly.[RegexFunctions.RegexFunctions].RegexMatch

   4.测试

   SELECT dbo.RegexMatch('hello word','hello');--匹配成功返回1

dll文件内容如下:

RegexAssembly.zip (1.53 KB, 下载次数: 13)

2024-7-22 23:06 上传

点击文件名下载附件

maike233

感谢楼主分享

keepxcw

非常感谢楼主分享

t77m5313

我去试试，感谢楼主分享

Carinx

我没记错的话，sqlserver的like和patindex也可以进行简单的正则匹配

louther

学习一下SQL

ilpj

学习了，感谢楼主分享

binger04

感谢楼主分享

fxfxs

谢谢分享，SQL学习中