Re: query based on row number for psql8.3

-----Original Message-----
From: pgsql-sql-owner(at)postgresql(dot)org [mailto:pgsql-sql-owner(at)postgresql(dot)org] On Behalf Of Rob Sargent
Sent: Wednesday, March 23, 2016 2:27 PM
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: [SQL] query based on row number for psql8.3

On 03/23/2016 12:00 PM, Emi wrote:
> Hello,
>
> For psql8.3, is there a simple way to query based on row number please?
>
> For example,
>
> select case
> when row_num=1 THEN t1.tot_hr
> ELSE t1.tot_hr - t1.pre_hr
> END
> FROM t1 ;
>
>
>
>
>
I seem to recall other posts from condordia: Someone needs to take of
their skates and update postgres!

[ST]
I'm not sure if this link works, as I don't have access to 8.3
http://postgresql.nabble.com/How-to-realize-ROW-NUMBER-in-8-3-td4328448.html

If this works, then wrap the query with a main query that uses "rownum" in the case statement.

STeve

--
Sent via pgsql-sql mailing list (pgsql-sql(at)postgresql(dot)org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-sql
THIS MESSAGE (AND ALL ATTACHMENTS) IS INTENDED FOR THE USE OF THE PERSON OR ENTITY TO WHOM IT IS ADDRESSED AND MAY CONTAIN INFORMATION THAT IS PRIVILEGED, CONFIDENTIAL AND EXEMPT FROM DISCLOSURE UNDER APPLICABLE LAW. If you are not the intended recipient, your use of this message for any purpose is strictly prohibited. If you have received this communication in error, please delete the message without making any copies and notify the sender so that we may correct our records. Thank you.