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From: Joseph Shraibman <jks(at)selectacast(dot)net>
To: "pgsql-sql(at)postgresql(dot)org" <pgsql-sql(at)postgresql(dot)org>
Subject: subselects
Date: 2000-11-30 00:03:36
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-sql
I tried to do this:
 SELECT r , a , (SELECT u , re FROM dir WHERE u = a) , cdate FROM rep
WHERE m IN(190);

... and I got:

ERROR:  Subselect must have only one field

An explain shows that two subselects result in two queries, even thought
they are accessing the same row.  Why can subselects only have one

Database version: PostgreSQL 7.0.3 on i686-pc-linux-gnu, compiled by gcc

Joseph Shraibman
Increase signal to noise ratio.


  • Re: subselects at 2000-12-02 10:27:23 from hubert depesz lubaczewski

pgsql-sql by date

Next:From: Joel BurtonDate: 2000-11-30 00:07:57
Subject: Re: Cache look up failure
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Subject: Rules with Conditions: Bug, or Misunderstanding

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