Yes, I enter query manually while testing. Here are explain plans : for select count(*) from poll_3 where eid = 72333
"Aggregate (cost=34697.64..34697.65 rows=1 width=0)" " -> Seq Scan on poll_3 (cost=0.00..34650.40 rows=18893 width=0)" " Filter: (eid = 72333)" for for select count(*) from poll where eid = 72333 "Aggregate (cost=320001.59..320001.60 rows=1 width=0)" " -> Append (cost=0.00..319570.78 rows=172323 width=0)" " -> Seq Scan on poll (cost=0.00..27.50 rows=17 width=0)" " Filter: (eid = 72333)" " -> Seq Scan on poll_0 poll (cost=0.00..14348.85 rows=9014 width=0)" " Filter: (eid = 72333)" " -> Seq Scan on poll_1 poll (cost=0.00..34796.82 rows=18735 width=0)" " Filter: (eid = 72333)" " -> Seq Scan on poll_2 poll (cost=0.00..34993.84 rows=18527 width=0)" " Filter: (eid = 72333)" " -> Seq Scan on poll_3 poll (cost=0.00..34650.40 rows=18893 width=0)" " Filter: (eid = 72333)" " -> Seq Scan on poll_4 poll (cost=0.00..34230.55 rows=18099 width=0)" " Filter: (eid = 72333)" " -> Seq Scan on poll_5 poll (cost=0.00..34267.64 rows=17543 width=0)" " Filter: (eid = 72333)" " -> Seq Scan on poll_6 poll (cost=0.00..34469.73 rows=18719 width=0)" " Filter: (eid = 72333)" " -> Seq Scan on poll_7 poll (cost=0.00..33642.98 rows=17968 width=0)" " Filter: (eid = 72333)" " -> Seq Scan on poll_8 poll (cost=0.00..32199.15 rows=16480 width=0)" " Filter: (eid = 72333)" " -> Seq Scan on poll_9 poll (cost=0.00..31943.33 rows=18328 width=0)" " Filter: (eid = 72333)" On Tue, 2007-11-27 at 17:40 -0800, paul rivers wrote: > Alex Vinogradovs wrote: > > Hello all, > > > > > > I have a table which is partitioned by range into 10 pieces with > > constraint exceptions. Constraint exceptions is enabled in server > > configuration too. For some reason, queries to the master table > > are still slower than direct queries against partitions. Is there > > any real reason for that, or I should look into misconfiguration ? > > > > Thanks! > > > > > > Best regards, > > Alex Vinogradovs > > > Is that true even if you type the query yourself in psql and ensure that > the values for the partitioned columns are constants in the where > clause? Can you post an explain of the sql? > > Paul > ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
