SQLServer中求两个字符串的交集

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,f23e,geafd,ged' )
/* 输出
abc,f23e,
*/