From: Martin Marques <martin@bugs.unl.edu.ar>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Markus Schaber <schabi@logix-tt.com>
Cc: PostgreSQL SQL List <pgsql-sql@postgresql.org>
Subject: Re: Slightly confused error message
Date: Fri, 28 Apr 2006 13:36:19 -0300
Message-ID: <dafdc3e847f55e0a67d11c779bf013ec@localhost> (raw)
In-Reply-To: <1612.1146240424@sss.pgh.pa.us>
References: <1612.1146240424@sss.pgh.pa.us>
On Fri, 28 Apr 2006 12:07:04 -0400, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Markus Schaber <schabi@logix-tt.com> writes:
>> I just stumbled over a slightly confused error message:
>
>> mydb=# select count(*),coverage_area from myschema.streets except select
>> cd as coverage_area from countryref.disks group by
> streets.coverage_area;
>> ERROR: column "streets.coverage_area" must appear in the GROUP BY
>> clause or be used in an aggregate function
>
>> As the query looks, streets.coverage_area is actually used in the GROUP
> BY.
>
> The complaint is 100% accurate; the subquery that it's unhappy about is
>
> select count(*),coverage_area from myschema.streets
>
> which is an aggregating query, but coverage_area is being used outside
> an aggregate without having been grouped by.
I see lack of parenthesis in the sub-query:
select count(*),coverage_area from myschema.streets except
(select cd as coverage_area from countryref.disks)
group by streets.coverage_area;
--
---------------------------------------------------------
Lic. Martín Marqués | SELECT 'mmarques' ||
Centro de Telemática | '@' || 'unl.edu.ar';
Universidad Nacional | DBA, Programador,
del Litoral | Administrador
---------------------------------------------------------
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To: pgsql-sql@postgresql.org
Cc: martin@bugs.unl.edu.ar, tgl@sss.pgh.pa.us, schabi@logix-tt.com
Subject: Re: Slightly confused error message
In-Reply-To: <dafdc3e847f55e0a67d11c779bf013ec@localhost>
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