To make Three row values in a single row

Question

Hi,
Below is the Table Format i have.
Here for the first Mail_ID i have 3 mail addresses.similarly for second ID too.
I want First three rows to be in a single row.and so on...
Plz help in doing this.
Thanks 
Deepa

Answer 1

Deepa,
Check if this helps.. Does dynamic conersion of data to columns ..
--Your Email table
create table #temp (mailid int,to_mail varchar(100))
insert #temp select 1,'[email protected]'
insert #temp select 1,'[email protected]'
insert #temp select 1,'[email protected]'
insert #temp select 2,'[email protected]'
insert #temp select 2,'[email protected]'
insert #temp select 3,'[email protected]'
--Constructing a temp table to hold data with row_numbers
select *,row_number() over(partition by mailid order by to_mail) as rn
into #t
from #temp
--declaration of variables
declare @n int,@list varchar(max),@sql nvarchar(max)
set @n=(select max(rn) from #t)
--Population of list to form the dynamic query
;with cte
as
select cast(',[email1]' as varchar(max)) as ch,1 as num
UNION ALL
select cast(ch+',[email'+cast((num+1) as varchar(100))+']' as varchar(max)) as ch,num+1 as num
from cte where num<@n
select top 1 @list=stuff(ch,1,1,'')
from cte
order by num desc
--Formulating the complete dynamic query
set @sql='
select mailid,'+@list+'
from
select mailid,to_mail,''email''+cast(rn as varchar) as emailnum from #t
) tab
PIVOT
max(to_mail) for emailnum in ('+@list+')
) pvt'
exec sp_executesql @sql
--clean up
drop table #t
Thanks,
Jay
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