Re: Conditional expresion in query - Mailing list pgsql-novice

From Oliveiros d'Azevedo Cristina
Subject Re: Conditional expresion in query
Date
Msg-id 5690BD247AA54F9488E46A6E4B6DB4C9@marktestcr.marktest.pt
Whole thread Raw
In response to Conditional expresion in query  (JORGE MALDONADO <jorgemal1960@gmail.com>)
List pgsql-novice
Yes, it does.
Can't see why not.
 
Why do you ask that, Jorge?
 
Have you tried and it failed?
 
Best,
Oliveiros
----- Original Message -----
Sent: Thursday, February 09, 2012 3:25 PM
Subject: [NOVICE] Conditional expresion in query

I have been reading about contidional expresions in a query and I have a question about the following example included in the documentation:

SELECT a,      CASE WHEN a=1 THEN 'one'           WHEN a=2 THEN 'two'           ELSE 'other'      END   FROM test;

I would like to make a few changes but I need to give a name (an alias) to the result of  the CASE. Can an "AS" be added as shown below?

SELECT a, b,      CASE WHEN a=b THEN a           ELSE a || '-' || b      END AS ab   FROM test;


Respectfully,
Jorge Maldonado


pgsql-novice by date:

Previous
From: Carlos Mennens
Date:
Subject: Re: Two Tables That Share Data?
Next
From: Michael Wood
Date:
Subject: Re: Two Tables That Share Data?