原来sql里的变量要赋值再应用，否则为空

use carddb 
DECLARE @info varchar(200) 
declare @sum varchar(8000) 
DECLARE @curs cursor 
set @sum=''
SET @curs=cursor scroll dynamic 
FOR 
select TOP 6 r.OuterUID+':'+cast(re.ChannelID as varchar(50))+';' as info from BankCard_PayUsedRecord r(nolock) 
join BankCard_PayUsedRequest re(nolock) on r.RecordId=re.RecordId 
OPEN @curs 
FETCH NEXT FROM @curs INTO @info 

WHILE (@@fetch_status=0 )
BEGIN 

 select @sum = @sum + @info+';' 
print @sum
--SELECT @info =@info+';' 
FETCH NEXT FROM @curs INTO @info 
END 
print @sum
CLOSE @curs 
deallocate @curs