SQLServer中求两个字符串的交集

代码高亮有点问题，测试时把@ str替换为@str

使用javascript的数组来计算，代码如下：

use   tempdb
go
if ( object_id ( 'fn_getArray' ) is not null )
    drop function dbo . fn_getArray
go
create function fn_getArray ( @ inStr1    varchar ( 8000 ), @ inStr2 varchar ( 8000 ))
returns    varchar ( 8000 )
as
begin
    declare @ str    varchar ( 8000 )
    set @ str = '
        var a = [''' + replace ( @ inStr1 , ',' , ''',''' ) + '''];
        var b = [''' + replace ( @ inStr2 ,''' ) + '''];
        var c=""
        for   (var   i=0;i<a.length;i++)
        {
            for   (var   j=0;j<b.length;j++)
            {    if(a[i]==b[j]&&c.indexOf(a[i])<0)
                    c+=a[i]+","
            }
        }
        '
    declare @ object int
    declare @ r varchar ( 800 )
    exec sp_OACreate 'MSScriptControl.ScriptControl' , @ object output   
    exec sp_OASetProperty @ object , 'Language' , 'javascript'
    exec sp_OAMethod @ object , 'eval' , @ r out , @ str
    return @ r
end
go
select dbo . fn_getArray ( 'abc,dced,f23e,gew432' , '23c,abc,geafd,ged' )


/* 输出
    abc,
*/