Message-ID: <392E9926.6B40AE53@austin.rr.com>
Date: Fri, 26 May 2000 10:32:54 -0500
From: Ed Loehr <eloehr@austin.rr.com>
MIME-Version: 1.0
To: Alexandr Listopad <laa@laa.zp.ua>
CC: pgsql-interfaces@postgresql.org
Subject: Re: Where is a mistake?
References: <Pine.BSF.4.10.10005261724210.27113-100000@Eagle.ZGIA.zp.ua>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Alexandr Listopad wrote:
> 
> CREATE VIEW v1 AS SELECT n.net AS net,
>                         n.sh_desc AS net_name,
>                         count(s.ip) AS total_q
>                         sum(s.bytes)/1024 AS Kb
>                         FROM zgia_nets n,
>                         squid_logs s
>                         WHERE network_sub(s.ip,n.net)
>                         AND
>                         date_eq(dt::date,'24-05-2000')
>                         AND
>                         s.peer_stat != 'NONE'
>                         GROUP BY net,net_name
>                         ORDER BY Kb;
> 
> stats=> select t1.net,t1.net_name,t1.total_q,t1.total_q/sum(t2.total_q) from v1 t1,
> v1 t2 group by 1,2,3;
> 
> pqReadData() -- backend closed the channel unexpectedly.
>         This probably means the backend terminated abnormally
>         before or while processing the request.
> We have lost the connection to the backend, so further processing is
> impossible.  Terminating.
> 
> where is a mistake? or is it a bug?
> 
> I have PGSQL v 6.5.3.

Mistake #1:  using 6.5.3 instead of 7.0  :)
Mistake #2:  aggregates are not supported in views  :(

Loaded question:  What does your server log show when this happens?

Regards,
Ed Loehr