I think you need to define more clearly what you want as an end
product. You could create a serial column however there are
possibilities of skipped numbers. Next, how do these 'row number'
relate to your data when you delete a row? Do you expect that the
remaining rows will re-number themselves? Is this 'number' a client
id number?
This sounds like you need to better define your data needs.
Before anyone can help, you need to be clearer.
Ted
-----Original Message-----
From: "Al Kirkus" <Al@dist102.k12.il.us>
To: pgsql-general@postgresql.org
Date: Thu, 01 Nov 2001 14:24:29 -0600
Subject: [GENERAL] Probably simple answer
> Hi all.
>
> Can anyone tell me how to get a sequential row count field in the
> output of a query?
>
> Say I want to query for all users in a table sorted by lastname and
> firstname.
> I would like to include a column in my query called "rownum" which
> would uniquely identify the row in the order of the query results.
>
> Like this:
>
> rownum =1 lastname=jones, firstname=john
> rownum=2 lastname=smith, firstname=john
>
> etc.
> I assume rownum should be some kind of function of expresion
but I
> don't know what.
>
> Something like:
>
> Select ???? as rownum, lastname,firstname from users where xxx
=xxx
> order by lastname, firsname.
>
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