compare two columns

Question

compare two columns

peter478

SSCrazy

Points: 2939
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December 5, 2016 at 2:50 am

#323813

Hello,
I have two datetime columns, that I want to compare and get result just for one.
Something like this: SELECT IIF ( column1 > column2, column1, column2) AS Result;
How can I do it in my view?
Thanks.
column2 is null
column1 > column2
column2 > column1

, and you want column1 returned under two of those conditions, so you want to test for the one condition where you're not returning column1.

Drew

J. Drew Allen
Business Intelligence Analyst
Philadelphia, PA

daniel.freedman 80164 Mr or Mrs. 500 Points: 535 More actions · Answer 1

use a case statement:

select case when column1 > column2 then column1 else column2 end as Result;

peter478 SSCrazy Points: 2939 More actions · Answer 2

Thank you , btw. sometimes has column2 value = NULL and result is also NULL. I this case I want to put date from column1.

Neil Burton SSC-Insane Points: 22924 More actions · Answer 3

peter478 (12/5/2016)
Thank you , btw. sometimes has column2 value = NULL and result is also NULL. I this case I want to put date from column1.

CASE

WHEN column1 >= ISNULL(column2,Column1)

THEN column1

ELSE column2 END AS Result

This will handle that situation.

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drew.allen SSC Guru Points: 76948 More actions · Answer 4

Assuming that column1 cannot be null, then this will give the same results and should be slightly faster.

CASE

WHEN column2 > column1

THEN column2

ELSE column1 END AS Result

You have three conditions: