sql server 正则匹配查询数据

IF OBJECT_ID (N'dbo.RegexMatch') IS NOT NULL
   DROP FUNCTION dbo.RegexMatch
GO
ALTER FUNCTION dbo.RegexMatch
    (
      @pattern VARCHAR(2000),
      @matchstring VARCHAR(MAX)--Varchar(8000) got SQL Server 2000
    )
RETURNS INT
/* The RegexMatch returns True or False, indicating if the regular expression matches (part of) the string. (It returns null if there is an error).
When using this for validating user input, you'll normally want to check if the entire string matches the regular expression. To do so, put a caret at the start of the regex, and a dollar at the end, to anchor the regex at the start and end of the subject string.
*/ 
AS BEGIN

    DECLARE @objRegexExp INT,
        @objErrorObject INT,
        @strErrorMessage VARCHAR(255),
        @hr INT,
        @match BIT 

     
    SELECT  @strErrorMessage = 'creating a regex object'
    EXEC @hr= sp_OACreate 'VBScript.RegExp', @objRegexExp OUT
    IF @hr = 0 
        EXEC @hr= sp_OASetProperty @objRegexExp, 'Pattern', @pattern
        --Specifying a case-insensitive match 
    IF @hr = 0 
        EXEC @hr= sp_OASetProperty @objRegexExp, 'IgnoreCase', 1
        --Doing a Test' 
    IF @hr = 0 
        EXEC @hr= sp_OAMethod @objRegexExp, 'Test', @match OUT, @matchstring
    IF @hr <> 0 
        BEGIN
            RETURN NULL
        END
    EXEC sp_OADestroy @objRegexExp
    RETURN @match
   END
GO

--修改变量启用
sp_configure 'show advanced options', 1;
GO
RECONFIGURE;
GO
sp_configure 'Ole Automation Procedures', 1;
GO
RECONFIGURE;
GO

EXEC sp_configure 'Ole Automation Procedures';
GO 


--测试 匹配两个相同的单词
SELECT dbo.RegexMatch('("([A-Za-z0-9]+) +\1\b)','"test test asdas')