On 8/31/2011 9:53 AM, Tore Halvorsen wrote:
On Wed, Aug 31, 2011 at 4:49 PM, Andy Colson <andy@xxxxxxxxxxxxxxx <mailto:andy@xxxxxxxxxxxxxxx>> 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 <http://a.id> = b.id <http://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
wow, yea.. I saw index and just assumed. Didn't even notice, sorry about that.
-Andy -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
