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CREATE FUNCTION dbo.find_regular_expression
(
  @source varchar(5000),   --ÐèҪƥÅäµÄÔ´×Ö·û´®
  @regexp varchar(1000),  --ÕýÔò±í´ïʽ
  @ignorecase bit = 0  --ÊÇ·ñÇø·Ö´óСд£¬Ä¬ÈÏΪfalse
)
RETURNS bit  --·µ»Ø½á¹û0-false£¬1-true
AS
BEGIN
--0£¨³É¹¦£©»ò·ÇÁãÊý×Ö£¨Ê§°Ü£©£¬ÊÇÓÉ OLE ×Ô¶¯»¯¶ÔÏó·µ»ØµÄ HRESULT µÄÕûÊýÖµ¡£
  DECLARE @hr integer
--ÓÃÓÚ±£´æ·µ»ØµÄ¶ÔÏóÁîÅÆ£¬ÒÔ±ãÖ®ºó¶Ô¸Ã¶ÔÏó½øÐвÙ×÷
  DECLARE @objRegExp integer   DECLARE @objMatches integer
--±£´æ½á¹û
  DECLARE @results bit
  
/*
´´½¨ OLE ¶ÔÏóʵÀý,Ö»ÓÐ sysadmin ¹Ì¶¨·þÎñÆ÷½ÇÉ«µÄ³ÉÔ±²ÅÄÜÖ´ÐÐ sp_OACreate,²¢È·¶¨»úÆ÷ÖÐÓÐVBScript.RegExpÀà¿â
*/
  EXEC @hr = sp_OACreate 'VBScript.RegExp', @objRegExp OUTPUT
  IF @hr <> 0 BEGIN
   SET @results = 0
   RETURN @results
  END
/*
ÒÔÏÂÈý¸ö·Ö±ðÊÇÉèÖÃн¨¶ÔÏóµÄÈý¸öÊôÐÔ¡£ÏÂÃæÊÇ'VBScript.RegExp'Öг£ÓõÄÊôÐÔ¾ÙÀý£º
     Dim regEx,Match,Matches          '½¨Á¢±äÁ¿¡£
     Set regEx = New RegExp          '½¨Á¢Ò»°ã±í´ïʽ¡£
     regEx.Pattern= patrn          'ÉèÖÃģʽ¡£
     regEx.IgnoreCase = True          'ÉèÖÃÊÇ·ñÇø·Ö´óСд¡£
     regEx.Global=True                              'ÉèÖÃÈ«¾Ö¿ÉÓÃÐÔ¡£
     set Matches=regEx.Execute(string)   


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