Josh Berkus <[EMAIL PROTECTED]> writes:
> SELECT a.id, b.type, max(b.number),
> (SELECT count(*) from c where c.b_type = b.type) as count_c
> FROM a, b
> WHERE a.id = b.a_id
> GROUP BY a.id, b.type
> HAVING count_c > 2;
> Will get a:
> ERROR: Attribute "count_c" not found.
As it should.
> I'd guess that this is being worked on for 7.4/8.0?
No, because it's not a bug. The SELECT list is evaluated after HAVING,
so what you are asking for is an impossibility in the SQL semantic
model.
(Yeah, I know there's some laxity in GROUP BY ... one of our worse
mistakes IMHO ...)
regards, tom lane
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