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From: Rob Sargent <robjsargent@gmail.com>
To: pgsql-sql@postgresql.org
Subject: Re: query based on row number for psql8.3
Date: Wed, 23 Mar 2016 12:26:36 -0600
Message-ID: <56F2DFDC.2020408@gmail.com> (raw)
In-Reply-To: <56F2D9C4.9010304@encs.concordia.ca>
References: <56F2D9C4.9010304@encs.concordia.ca>
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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!



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