From: boinger <boinger@gmail.com>
To: Abhishek <ajcool@gmail.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: combining records from a single table and presenting them as one record
Date: Thu, 27 Oct 2005 16:46:43 -0500
Message-ID: <9e6d8b530510271446w63c1eb8dp97e7703dde3309a4@mail.gmail.com> (raw)
In-Reply-To: <506ca6630510271100y367e1fb2hfb05f5ecaae043a3@mail.gmail.com>
References: <506ca6630510271100y367e1fb2hfb05f5ecaae043a3@mail.gmail.com>
On 10/27/05, Abhishek <ajcool@gmail.com> wrote:
> I am tryng to write a query which returns me a record like this
<snip>
> I do the query as this:
>
> select callguid , ( select digits from TABEL1 where type='a' ), ( select
> digits from TABEL1 where type='b' ), ( select digits from TABEL1 where
> type='c' ) from TABLE1;
<snip>
> Note that I get the records which i wanted, but I get them duplicated. If I
> use 'distinct' keyword I get the desired result with no duplication. But
> 'distinct' seems to be too expensive.
>
> Is there any better way I can do this without compromising the performance ?
Just add 'LIMIT 1' to the end of the query.
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: boinger@gmail.com, ajcool@gmail.com
Subject: Re: combining records from a single table and presenting them as one record
In-Reply-To: <9e6d8b530510271446w63c1eb8dp97e7703dde3309a4@mail.gmail.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