Karl,
BTW, the other posted cleaner model doesn't work for me. If there is NO
row in the subtable that matches, the other version returns nothing (which
makes sense since the initial select fails to match any rows as one of the
things its trying to match is missing.)
Ah, wasn't thinking of
Karl Denninger [EMAIL PROTECTED] writes:
akcs= explain analyze select forum, (replied (select lastview from forumlog where
forumlog.login='genesis' and forumlog.forum='General' and number=post.number)) as
newflag, * from post where forum = 'General' and toppost = 1 order by pinned desc,
Karl,
SubPlan
- Seq Scan on forumlog (cost=0.00..1.18 rows=1 width=8)
Filter: ((login = '%s'::text) AND (forum = '%s'::text) AND
(number = $0))
Why is the subplan using a sequential scan? At minimum the index on the
post number (forumlog_number)
Karl,
Well, still with only 5 rows in the forumlog table you're not going get
realistic results compared to a loaded database. However, you are making
things difficult for the parser with awkward query syntax; what you currently
have encourages a sequential loop.
If there are potentially
