Combine 2 rows from derived table into 1 row w/o repeating query?

I'm trying not to use a temp table, but i may have to do so..

i have a derived table that makes the following results:

ID Status Name

2 1 "A"

2 2 "B"

I want to get the following:

ID Name1 Name2

2 "A" "B"

but like I said before, I can't repeat the query that gets the first 2 rows, as it's pretty invovled. a temp table is the best route I see right now, but I just wanted to be sure I'm not missing something.

Here it is,

Code Snippet

Create Table #data (

[ID] int ,

[Status] int ,

[Name] Varchar(100)

);

Insert Into #data Values('2','1','A');

Insert Into #data Values('2','2','B');

Select

Id

,max(case when Status=1 Then [Name] end) [name1]

,max(case when Status=2 Then [Name] end) [name2]

from

(

Select * from #data -- Your Derived Table

) as Data

Group By

Id

|||

The solution will work, I just needed to think about how to expand it for more columns, but I got it now.

If it's very very slow, I will try something with a CTE - I think that'll work as well.

|||

The CTE was 50-60% faster than the other route! but that method is also useful if using sql2000.|||

Yeah a CTE is going to be the way to go on this in 2005 for sure. Never been a fan of using temp tables and I avoid them when I can. So here's my own variation on the above sample...

Code Snippet

SELECT
[ID],
max(case when Status=1 Then [Name] end) [name1],
max(case when Status=2 Then [Name] end) [name2]

from (
SELECT 2 As [ID], 1 As Status, 'A' As [Name]
UNION SELECT 2, 2, 'B'
) AS Data
GROUP BY [ID]