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Re: returned row number

From: Bruno Wolff III <bruno(at)wolff(dot)to>
To: Keith Worthington <keithw(at)narrowpathinc(dot)com>
Cc: PostgreSQL Novice <pgsql-novice(at)postgresql(dot)org>
Subject: Re: returned row number
Date: 2005-05-06 21:00:16
Message-ID: 20050506210016.GB11254@wolff.to (view raw or flat)
Thread:
Lists: pgsql-novice
On Fri, May 06, 2005 at 15:45:02 -0400,
  Keith Worthington <keithw(at)narrowpathinc(dot)com> wrote:
> Hi All,
> 
> I have a quick question.  Is there a simple way to access the returned record
> number?
> 
> I want to be able to do something like
> 
> SELECT record AS record_no,
>        column1,
>        column2
>   FROM table1
>  WHERE column2 < 100
>  ORDER BY column1;
> 
> record_no | column1 | column2
> ----------+---------+---------
> 1         | A       | 1.75
> 2         | F       | 93
> 3         | M       | 12.5
> 4         | N       | 0
> 5         | Q       | 57.6

Normally the best thing to do is have the application count.
You can use a subquery to get the counts, but it will be a
lot slower. You could also write a set returning function
to do this.

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