From: | "Josh Berkus" <josh(at)agliodbs(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, josh(at)agliodbs(dot)com |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: BOOLEAN question |
Date: | 2002-10-29 20:32:02 |
Message-ID: | web-1804001@davinci.ethosmedia.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-sql |
Tom,
> Perhaps
> SELECT true = ANY (SELECT boolcol FROM ...);
> or
> SELECT true IN (SELECT boolcol FROM ...);
>
> Which is not to say that MAX(bool) might not be a nicer solution;
> but you can definitely do it with SQL-spec constructs.
Based on some rough testing,
SELECT true = ANY ( SELECT boolcol FROM complex query )
Is marginlly faster than
SELECT max(boolcol) FROM complex query
With a custom MAX(boolean) function.
So I'll stick to ANY().
-Josh
______AGLIO DATABASE SOLUTIONS___________________________
Josh Berkus
Complete information technology josh(at)agliodbs(dot)com
and data management solutions (415) 565-7293
for law firms, small businesses fax 621-2533
and non-profit organizations. San Francisco
From | Date | Subject | |
---|---|---|---|
Next Message | Peter Eisentraut | 2002-10-29 22:19:55 | Re: BOOLEAN question |
Previous Message | Stephan Szabo | 2002-10-29 18:36:17 | Re: [SQL] Creating Stored Procedures |