From: Tom Lane <tgl@sss.pgh.pa.us>
To: Francesc Leveque <webmaster@loroadictos.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: Subselect returning 2 columns
Date: Thu, 06 May 2004 21:26:33 -0400
Message-ID: <26990.1083893193@sss.pgh.pa.us> (raw)
In-Reply-To: <4099FCB4.1090300@loroadictos.com>
References: <4099FCB4.1090300@loroadictos.com>
Francesc Leveque <webmaster@loroadictos.com> writes:
> Is correct to do something like?:
> SELECT row1,row2 FROM mytable
> WHERE (row1,row3) IN
> (SELECT row1 as p1,MAX(row3) as p2 FROM mytable
> WHERE row3 <= current_date
> GROUP BY row1)
Sure.
> I mean, I don't see documentation about subselects returning more than
> one column, but it seems to work...
http://www.postgresql.org/docs/7.4/static/functions-subquery.html#AEN12497
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, webmaster@loroadictos.com
Subject: Re: Subselect returning 2 columns
In-Reply-To: <26990.1083893193@sss.pgh.pa.us>
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