On Wed, Aug 31, 2011 at 4:49 PM, Andy Colson <a...@squeakycode.net> wrote:
> On PG 9, after I ANALYZED the tables, it used indexes: > > > QUERY PLAN > ------------------------------**------------------------------** > ------------------------------**--------------------- > Merge Join (cost=1.59..82778.35 rows=13171 width=20) (actual > time=0.066..1076.616 rows=12966 loops=1) > Merge Cond: (a.id = b.id) > Join Filter: ((a."time" >= '2011-08-15 00:00:00'::timestamp without time > zone) OR (b."time" >= '2011-08-01 0 > -> Index Scan using a_pkey on a (cost=0.00..31389.36 rows=1000000 > width=12) (actual time=0.007..204.856 ro > -> Index Scan using b_pkey on b (cost=0.00..31389.36 rows=1000000 > width=12) (actual time=0.006..224.189 ro > > > ANALYZE is the magic. > You are, of course, right, but it doesn't use the TIME index. Hmmm, may be my example isn't large enough to produce the issue. -- Eld på åren og sol på eng gjer mannen fegen og fjåg. [Jøtul] <demo> 2011 Tore Halvorsen || +052 0553034554
