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 how to reference columns??

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sharcfinz
Starting Member

4 Posts

Posted - 2010-08-25 : 16:14:49
I've got a view that has calculated columns, and I need to add another column that gives a total sum of the values in each row.. .. so ColumnA + ColumnB + ColumnC etc... .

Part of my query looks like this:
SELECT 1 AS ResultOrder, 'TotalScreen' AS TotalName, SUM(CASE WHEN Site = '01' THEN CASE WHEN DateAsked = dateadd(ms, 0, CONVERT(varchar, GetDate(), 101)) THEN 1 ELSE 0 END ELSE 0 END) AS [Column A], SUM(CASE WHEN Site = '02' THEN CASE WHEN DateAsked= dateadd(ms, 0, CONVERT(varchar, GetDate(), 101)) THEN 1 ELSE 0 END ELSE 0 END) AS [Column B], SUM(CASE WHEN Site = '03' THEN CASE WHEN DateAsked= dateadd(ms, 0, CONVERT(varchar, GetDate(), 101)) THEN 1 ELSE 0 END ELSE 0 END) AS [Column C], '' AS 'Across Sites'

In that last column that I called 'Across Sites', I want to sum up the values of ColumnA, ColumnB, and ColumnC. but how do I reference them?

When I put ([ColumnA] + [ColumnB] + [ColumnC]) AS 'Across Sites', I get an error.

Help please?

webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2010-08-25 : 18:33:25
You have to repeat the statements
sum(...) + sum(...) + sum(...) as [Across Sites]

or you can use your query as derived table and build your last column in the outer query.


No, you're never too old to Yak'n'Roll if you're too young to die.
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sharcfinz
Starting Member

4 Posts

Posted - 2010-08-26 : 08:58:35
Thanks a lot. That did the trick :-) I guess I was thinking that I was just a special way to reference those column names but there wasn't. . . thanks again!
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visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2010-08-26 : 11:05:36
there's a special way.but for that you need to make your query a derived table like

SELECT put the other columns here...,[ColumnA] + [ColumnB] + [ColumnC] AS [Across Sites]
FROM
(
SELECT 1 AS ResultOrder, 'TotalScreen' AS TotalName, SUM(CASE WHEN Site = '01' THEN CASE WHEN DateAsked = dateadd(ms, 0, CONVERT(varchar, GetDate(), 101)) THEN 1 ELSE 0 END ELSE 0 END) AS [Column A], SUM(CASE WHEN Site = '02' THEN CASE WHEN DateAsked= dateadd(ms, 0, CONVERT(varchar, GetDate(), 101)) THEN 1 ELSE 0 END ELSE 0 END) AS [Column B], SUM(CASE WHEN Site = '03' THEN CASE WHEN DateAsked= dateadd(ms, 0, CONVERT(varchar, GetDate(), 101)) THEN 1 ELSE 0 END ELSE 0 END) AS [Column C]
...
)t

also dont put '' across column aliases

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http://visakhm.blogspot.com/

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