Re: [HACKERS] union and LIMIT problem

Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> Can I assume this is fixed? I see it marked on the TODO list.

Yes, I think it is (barring a counterexample from someone ... the
UNION rewriter is awfully crufty ...).

It might be nice to allow LIMIT to be attached to subselects rather
than just the top level, but I have no idea what it would take in the
executor to implement that. I could handle fixing the parser & planner
if someone else wants to fix it in the executor.

>> Does anybody know how to use UNION and LIMIT together ?
>>
>> select msg_id from publications union
>> select key_id from keys limit 10
>> produces something I wasn't expected

regards, tom lane