SQL Server 验证身份证合法性函数(使用VBScript.RegExp)

版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/wzy0623/article/details/53895680

-- 建立正则表达式测试函数  
CREATE FUNCTION dbo.RegExpTest  
    (  
      @source VARCHAR(5000),   --需要匹配的源字符串  
      @regexp VARCHAR(1000),  --正则表达式  
      @ignorecase BIT = 0  --是否区分大小写,默认为false  
    )  
RETURNS BIT  --返回结果0-false,1-true  
AS BEGIN  
  
 --0(成功)或非零数字(失败),是由 OLE 自动化对象返回的 HRESULT 的整数值。  
    DECLARE @hr INTEGER  
  
--用于保存返回的对象令牌,以便之后对该对象进行操作  
    DECLARE @objRegExp INTEGER  
    DECLARE @objMatches INTEGER  
  
--保存结果  
    DECLARE @results BIT  
   
/*  
创建 OLE 对象实例,只有 sysadmin 固定服务器角色的成员才能执行 sp_OACreate,并确定机器中有VBScript.RegExp类库  
*/  
    EXEC @hr = sp_OACreate 'VBScript.RegExp', @objRegExp OUTPUT  
    IF @hr <> 0   
        BEGIN  
            SET @results = 0  
            RETURN @results  
        END  
/*  
以下三个分别是设置新建对象的三个属性。下面是'VBScript.RegExp'中常用的属性举例:  
    Dim regEx,Match,Matches         '建立变量。  
    Set regEx = New RegExp         '建立一般表达式。  
    regEx.Pattern= patrn         '设置模式。  
    regEx.IgnoreCase = True         '设置是否区分大小写。  
    regEx.Global=True                             '设置全局可用性。  
    set Matches=regEx.Execute(string)             '重复匹配集合  
    RegExpTest = regEx.Execute(strng)      '执行搜索。  
   for each match in matches                    '重复匹配集合  
   RetStr=RetStr &"Match found at position "  
   RetStr=RetStr&Match.FirstIndex&".Match Value is '"  
   RetStr=RetStr&Match.Value&"'."&vbCRLF Next  
   RegExpTest=RetStr  
  
*/  
    EXEC @hr = sp_OASetProperty @objRegExp, 'Pattern', @regexp  
    IF @hr <> 0   
        BEGIN  
            SET @results = 0  
            RETURN @results  
        END  
    EXEC @hr = sp_OASetProperty @objRegExp, 'Global', false  
    IF @hr <> 0   
        BEGIN  
            SET @results = 0  
            RETURN @results  
        END  
    EXEC @hr = sp_OASetProperty @objRegExp, 'IgnoreCase', @ignorecase  
    IF @hr <> 0   
        BEGIN  
            SET @results = 0  
            RETURN @results  
        END  
--调用对象方法  
    EXEC @hr = sp_OAMethod @objRegExp, 'Test', @results OUTPUT, @source  
    IF @hr <> 0   
        BEGIN  
            SET @results = 0  
            RETURN @results  
        END  
--释放已创建的 OLE 对象  
    EXEC @hr = sp_OADestroy @objRegExp  
    IF @hr <> 0   
        BEGIN  
            SET @results = 0  
            RETURN @results  
        END  
    RETURN @results  
   END  
  
-- 建立身份证验证函数     
ALTER  FUNCTION dbo.fn_checkidcard ( @p_idcard VARCHAR(18) )  
RETURNS INT  
AS BEGIN  
    DECLARE @v_regstr VARCHAR(2000) ;  
    DECLARE @v_sum INT ;  
    DECLARE @v_mod INT ;  
    DECLARE @v_checkcode CHAR(11) ;  
    SET @v_checkcode = '10X98765432' ;  
    DECLARE @v_checkbit CHAR(1) ;  
    DECLARE @v_areacode VARCHAR(2000) ;  
    SET @v_areacode = '11,12,13,14,15,21,22,23,31,32,33,34,35,36,37,41,42,43,44,45,46,50,51,52,53,54,61,62,63,64,65,71,81,82,91,' ;  
  
    DECLARE @l INT ;  
    SET @l = LEN(@p_idcard) ;  
      
    DECLARE @r INT ;  
    SET @r = 0 ;  
  
    IF @l = 15   
        BEGIN  
            IF CHARINDEX(SUBSTRING(@p_idcard, 1, 2) + ',', @v_areacode) = 0   
                RETURN 0 ;  
  
            IF ( ( CAST(( SUBSTRING(@p_idcard, 6, 2) ) AS INT) + 1900 ) % 400 = 0 )  
                OR ( ( ( CAST(( SUBSTRING(@p_idcard, 6, 2) ) AS INT) + 1900 )  
                       % 100 <> 0 )  
                     AND ( ( CAST(( SUBSTRING(@p_idcard, 6, 2) ) AS INT)  
                             + 1900 ) % 4 = 0 )  
                   )   
                SET @v_regstr = '^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$' ;  
            ELSE   
                SET @v_regstr = '^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$' ;                    
                  
            IF dbo.RegExpTest(@p_idcard, @v_regstr, 0) = 1   
                SET @r = 1 ;  
            ELSE   
                SET @r = 0 ;           
        END ;          
    ELSE   
        IF @l = 18   
            BEGIN                                                  
                IF CHARINDEX(SUBSTRING(@p_idcard, 1, 2) + ',', @v_areacode) = 0   
                    RETURN 0 ;  
                                        
                IF ( ( CAST(( SUBSTRING(@p_idcard, 6, 4) ) AS INT) + 1900 )  
                     % 400 = 0 )  
                    OR ( ( ( CAST(( SUBSTRING(@p_idcard, 6, 4) ) AS INT)  
                             + 1900 ) % 100 <> 0 )  
                         AND ( ( CAST(( SUBSTRING(@p_idcard, 6, 4) ) AS INT)  
                                 + 1900 ) % 4 = 0 )  
                       )   
                    SET @v_regstr = '^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$' ;  
                ELSE   
                    SET @v_regstr = '^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$' ;  
                  
                IF dbo.RegExpTest(@p_idcard, @v_regstr, 0) = 1   
                    BEGIN  
                        SET @v_sum = ( CAST(SUBSTRING(@p_idcard, 1, 1) AS INT)  
                                       + CAST(SUBSTRING(@p_idcard, 11, 1) AS INT) )  
                            * 7 + ( CAST(SUBSTRING(@p_idcard, 2, 1) AS INT)  
                                    + CAST(SUBSTRING(@p_idcard, 12, 1) AS INT) )  
                            * 9 + ( CAST(SUBSTRING(@p_idcard, 3, 1) AS INT)  
                                    + CAST(SUBSTRING(@p_idcard, 13, 1) AS INT) )  
                            * 10 + ( CAST(SUBSTRING(@p_idcard, 4, 1) AS INT)  
                                     + CAST(SUBSTRING(@p_idcard, 14, 1) AS INT) )  
                            * 5 + ( CAST(SUBSTRING(@p_idcard, 5, 1) AS INT)  
                                    + CAST(SUBSTRING(@p_idcard, 15, 1) AS INT) )  
                            * 8 + ( CAST(SUBSTRING(@p_idcard, 6, 1) AS INT)  
                                    + CAST(SUBSTRING(@p_idcard, 16, 1) AS INT) )  
                            * 4 + ( CAST(SUBSTRING(@p_idcard, 7, 1) AS INT)  
                                    + CAST(SUBSTRING(@p_idcard, 17, 1) AS INT) )  
                            * 2 + CAST(SUBSTRING(@p_idcard, 8, 1) AS INT) * 1  
                            + CAST(SUBSTRING(@p_idcard, 9, 1) AS INT) * 6  
                            + CAST(SUBSTRING(@p_idcard, 10, 1) AS INT) * 3 ;  
                              
                        SET @v_mod = @v_sum % 11 ;  
                        SET @v_checkbit = SUBSTRING(@v_checkcode, @v_mod + 1,  
                                                    1) ;  
                                                      
                        IF @v_checkbit = SUBSTRING(@p_idcard, 18, 1)   
                            SET @r = 1 ;  
                        ELSE   
                            SET @r = 0 ;                             
                    END ;  
                ELSE   
                    RETURN 0 ;  
            END ;  
    RETURN @r ;  
   -- 身份证号码位数不对  
   END ;  
;  
  
-- 开启Ole Automation Procedures配置  
EXEC sp_configure 'show advanced options', 1   
RECONFIGURE   
EXEC sp_configure 'Ole Automation Procedures', 1   
RECONFIGURE   
EXEC sp_configure 'show advanced options', 0   
RECONFIGURE  
  
-- 测试  
SELECT dbo.fn_checkidcard('110102197203270816');  

问题:这种方法对每一行都要创建对象、设置对象属性、释放对象等一系列操作,数据量大时性能很差。但这种在SQL Server中使用正则表达式的方法比较简单。

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