Scara Maccai wrote: > explain analyze > select nome1, > thv3tralacc, > dltbfpgpdch > FROM cell_bsc_60_0610 as cell_bsc > left outer join teststscell73_0610_1 as data on data.ne_id=cell_bsc.nome1 > left outer join teststscell13_0610_1 as data1 on data1.ne_id=cell_bsc.nome1 and data1.time=data.time > where > > data.time >=cell_bsc.starttime and data.time <=cell_bsc.endtime and > data.time between '2006-10-01 00:00:00' and '2006-10-06 00:00:00' > and data1.time >=cell_bsc.starttime and data1.time <=cell_bsc.endtime > and data1.time between '2006-10-01 00:00:00' and '2006-10-06 00:00:00' > and cell_bsc.nome2=2 > > explain analyze: > > http://explain-analyze.info/query_plans/3805-query-plan-2509 > > > same query, but using postgresql's partition pruning ("2"): > > explain analyze > select nome1, > thv3tralacc, > dltbfpgpdch > FROM cell_bsc_60_0610 as cell_bsc > left outer join teststscell73 as data on data.ne_id=cell_bsc.nome1 > left outer join teststscell13 as data1 on data1.ne_id=cell_bsc.nome1 and data1.time=data.time > where > > data.time >=cell_bsc.starttime and data.time <=cell_bsc.endtime and > data.time between '2006-10-01 00:00:00' and '2006-10-06 00:00:00' > and data1.time >=cell_bsc.starttime and data1.time <=cell_bsc.endtime > and data1.time between '2006-10-01 00:00:00' and '2006-10-06 00:00:00' > and cell_bsc.nome2=2 Huh, clearly not the same query (you're using the partition directly in the first query) ... Doing two changes at once is not helping your case. -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
