• sql server 正则匹配查询数据


     1 IF OBJECT_ID (N'dbo.RegexMatch') IS NOT NULL
     2    DROP FUNCTION dbo.RegexMatch
     3 GO
     4 ALTER FUNCTION dbo.RegexMatch
     5     (
     6       @pattern VARCHAR(2000),
     7       @matchstring VARCHAR(MAX)--Varchar(8000) got SQL Server 2000
     8     )
     9 RETURNS INT
    10 /* The RegexMatch returns True or False, indicating if the regular expression matches (part of) the string. (It returns null if there is an error).
    11 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.
    12 */ 
    13 AS BEGIN
    14 
    15     DECLARE @objRegexExp INT,
    16         @objErrorObject INT,
    17         @strErrorMessage VARCHAR(255),
    18         @hr INT,
    19         @match BIT 
    20 
    21      
    22     SELECT  @strErrorMessage = 'creating a regex object'
    23     EXEC @hr= sp_OACreate 'VBScript.RegExp', @objRegexExp OUT
    24     IF @hr = 0 
    25         EXEC @hr= sp_OASetProperty @objRegexExp, 'Pattern', @pattern
    26         --Specifying a case-insensitive match 
    27     IF @hr = 0 
    28         EXEC @hr= sp_OASetProperty @objRegexExp, 'IgnoreCase', 1
    29         --Doing a Test' 
    30     IF @hr = 0 
    31         EXEC @hr= sp_OAMethod @objRegexExp, 'Test', @match OUT, @matchstring
    32     IF @hr <> 0 
    33         BEGIN
    34             RETURN NULL
    35         END
    36     EXEC sp_OADestroy @objRegexExp
    37     RETURN @match
    38    END
    39 GO
    40 
    41 --修改变量启用
    42 sp_configure 'show advanced options', 1;
    43 GO
    44 RECONFIGURE;
    45 GO
    46 sp_configure 'Ole Automation Procedures', 1;
    47 GO
    48 RECONFIGURE;
    49 GO
    50 
    51 EXEC sp_configure 'Ole Automation Procedures';
    52 GO 
    53 
    54 
    55 --测试 匹配两个相同的单词
    56 SELECT dbo.RegexMatch('("([A-Za-z0-9]+) +1)','"test test asdas')
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  • 原文地址:https://www.cnblogs.com/Gold-fangjin/p/14582406.html
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