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SQL Server 2005
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Comparing Computed columns
Comparing Computed columns
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rajkiran-331110
rajkiran-331110
Posted Wednesday, September 17, 2008 5:07 AM
Forum Newbie
Group: General Forum Members
Last Login: Wednesday, August 15, 2012 9:16 AM
Points: 6,
Visits: 153
Hello,
I have got 2computed columns.
select * from table followed by condition as memotype1
I want to pick up my memovalue1 based on memotype1
When i did select * from where memotype=memotype1 ,it is not picking the value.
how can i compare a computed column to populate another computed column
Post #570902
GSquared
GSquared
Posted Wednesday, September 17, 2008 7:02 AM
SSCoach
Group: General Forum Members
Last Login: Monday, May 06, 2013 1:09 PM
Points: 15,439,
Visits: 9,569
I'm not sure I follow your question. Are you asking how to select a computed column, or how to create one? You can't use one computed column in the definition of another computed column, if that's what you're asking about. But you can include the definition of the first one in the definition of the second one.
- Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
Property of The Thread
"Nobody knows the age of the human race, but everyone agrees it's old enough to know better." - Anon
Post #570963
Bert-687390
Bert-687390
Posted Thursday, September 18, 2008 4:36 AM
Mr or Mrs. 500
Group: General Forum Members
Last Login: Tuesday, March 08, 2011 2:31 AM
Points: 513,
Visits: 38
If I get the point right, you want to use a computed column in the select query. In that case, you should use something like (sorry for possible syntax errors, I have no SQL available where I currently reside :) ):
select * from
(
select SomeColumWithComputation as ComputedColumn
from SomeTable
) tmp
where ComputedColumn=bla
Cheers! Bert
------------------------
MCPD Web Developer, MCPD Windows Developer
Computers are made to solve problems you did not have in the days they didn't exist.
Post #571614
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