From: C F <tacnaboyz@yahoo.com>
To: pgsql-sql@postgresql.org
Subject: SQL Help
Date: Fri, 30 May 2003 08:47:03 -0700 (PDT)
Message-ID: <20030530154703.37238.qmail@web20415.mail.yahoo.com> (raw)
Hello,
I already tried this same basic question with no response.... maybe I was too wordy. So here it is simplified.... what's the best way to write this query? I'm open to using stored procedures, but even then I don't know how I would conditionally populate a resultset (refcursor). Notice that in the first three cases, the expression is the exact same, only the return value is different. This seems inefficient....
select
(case when column1 = column2 then column3 end) as alias1,
(case when column1 = column2 then column4 end) as alias2,
(case when column1 = column2 then column5 end) as alias3,
(case when column6 = column7 then column8 end) as alias4
from
mytable
;
Any ideas?
Thanks!
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To: pgsql-sql@postgresql.org
Cc: tacnaboyz@yahoo.com
Subject: Re: SQL Help
In-Reply-To: <20030530154703.37238.qmail@web20415.mail.yahoo.com>
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