Use results from one column for another column

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Use results from one column for another column

Author

Topic

pvong
Yak Posting Veteran

58 Posts

Posted - 2013-01-04 : 18:00:50

Doing this in SQL 2008.

Is it possible to use the results of one column to calculate another column? Example:

Select .. VERY LONG FORMULA as Results1

I need another column with a CASE so..

CASE Result1 < 100 Then something as Results2

Is it possible to do something like this or do I have to do the whole long formula again like...

CASE VERY LONG FORMULA < 100 Then something as Result2

I already have Results1 and it's silly to do it again just to calculate Results2.

God I hope this isn't too confusing.

Thanks in advance.
Phil

------------------------------
Using VS2010 / Learning in VB.Net / Win2008 R2 / SQL 2008 R2
Be kind to the newbies because you were once there.

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2013-01-04 : 20:40:59

you can do in both ways

either

CASE VERY LONG FORMULA < 100 Then something as Result2

or make first result into derved table and then use it like


SELECT ....,
CASE Result1 < 100 Then something as Results2,
..
FROM
(
SELECT ...,
VERY LONG FORMULA as Results1
FROM
....
)t

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

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