From: Richard Broersma Jr <rabroersma@yahoo.com>
To: James Cloos <cloos@jhcloos.com>
To: pgsql-sql@postgresql.org
Subject: Re: where clause subqueries vs multiple rows results
Date: Sun, 10 Sep 2006 22:01:29 -0700 (PDT)
Message-ID: <20060911050129.13298.qmail@web31814.mail.mud.yahoo.com> (raw)
In-Reply-To: <m3y7srm695.fsf@lugabout.jhcloos.org>
> I've a query which I'd have liked to word akin to:
>
> SELECT guid FROM child WHERE the_fkey =
> ( SELECT id FROM parent WHERE name ~ 'some_regex' )
> ORDER BY the_fkey, my_pkey;
>
> I got around it by doing the SELECT id first, and then doing a SELECT
> guid for each row returned, appending the results together.
>
> Can that be done in a single query, insead of 1+n queries?
select guid
from child C join parent P
on (C.the_fkey = P.di)
Where P.name ~ 'some_regex'
order by C.the_fkey, P.my_pkey;
Perhaps this might work.
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-sql@postgresql.org
Cc: rabroersma@yahoo.com, cloos@jhcloos.com
Subject: Re: where clause subqueries vs multiple rows results
In-Reply-To: <20060911050129.13298.qmail@web31814.mail.mud.yahoo.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox