Slightly confused error message

Hi,

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.

I know how to fix the query, but I wonder whether it is worth the effort
to try improving the error message.

Thanks,
Markus
-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

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