> Bruce Momjian wrote:
>
> >
> > > Does anybody know how to use UNION and LIMIT together ?
> > > I want to get 10 rows from publications and 10 rows
> > > from keys.
> > >
> > > select msg_id from publications limit 10 union
> > > select key_id from keys limit 10
> > > produces
> > > ERROR: parser: parse error at or near "union
> > >
> > > select msg_id from publications union
> > > select key_id from keys limit 10
> > > produces something I wasn't expected
> >
> > I have on the TODO list:
> >
> > * UNION with LIMIT fails
>
> and must fail by it's implementation. LIMIT is handled by the
> outermost executor loop, suppressing OFFSET result tuples and
> stopping execution after LIMIT results sent to the client.
Ah, but it works sometimes:
test=> select * from pg_language union select * from pg_language limit 1;
lanname|lanispl|lanpltrusted|lanplcallfoid|lancompiler-------+-------+------------+-------------+----------- |t |f
|f | 0|/bin/cc (1 row)
so we would need to get it working, or disable it from happening.
-- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610)
853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill,
Pennsylvania19026
