From: | greg(at)proterians(dot)net |
---|---|
To: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
Cc: | Dirk Lutzebaeck <lutzeb(at)aeccom(dot)com>, pgsql-general(at)hub(dot)org |
Subject: | Re: [GENERAL] backend crashing with INTERSECT / ORDER BY |
Date: | 1999-09-28 05:23:19 |
Message-ID: | Pine.LNX.4.05.9909280721490.12179-100000@proterians.net |
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Lists: | pgsql-general |
> >
> > So I tried INTERSECT with ORDER BY and it crashes on 6.5 and 6.5.1:
> >
> > [csmaster(at)kamet release0]$ psql cs1
> > Welcome to the POSTGRESQL interactive sql monitor:
> > Please read the file COPYRIGHT for copyright terms of POSTGRESQL
> > [PostgreSQL 6.5.1 on i686-pc-linux-gnu, compiled by gcc egcs-2.91.66]
> >
> > type \? for help on slash commands
> > type \q to quit
> > type \g or terminate with semicolon to execute query
> > You are currently connected to the database: cs1
> >
> > cs1=> SELECT envelope FROM docobj
> > cs1-> WHERE attrid=5
> > cs1-> INTERSECT
> > cs1-> SELECT envelope FROM docobj
> > cs1-> WHERE attrid=6
> > cs1-> ORDER BY attrid DESC
> > cs1-> ;
> > 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.
> >
>
> Not sure. I just tried this:
>
> test=> select relname from pg_class intersect select relname from
> pg_class order by relname;
> ERROR: get_sortgroupclause_expr: ORDER/GROUP BY expression not found in
> targetlist
>
> Not sure what this means either.
>
On 6.5.2 ....
test=> select relname from pg_class intersect select relname from
pg_class order by relname;
works fine...
--Greg--
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