Re: Slow query on partitioned table.

2018-03-27 Thread Justin Pryzby
Re-added -performance. On Tue, Mar 27, 2018 at 05:13:25PM +0100, Glenn Pierce wrote: > Damn as I was playing with the indexes I must have deleted the constraints :( > Question if I have a constraint like > > ALTER TABLE sensor_values_2007q1 > ADD CONSTRAINT sensor_values_2007q1_sensor_id_timest

Re: Slow query on partitioned table.

2018-03-27 Thread Justin Pryzby
On Tue, Mar 27, 2018 at 03:14:30PM +0100, Glenn Pierce wrote: > Hi I am having terrible trouble with a simple partitioned table. > Select queries are very slow. > The child tables are all like > Check constraints: > "sensor_values_2018q1_timestamp_check" CHECK (ts >= '2018-01-01 > 00:00:00

Slow query on partitioned table.

2018-03-27 Thread Glenn Pierce
Hi I am having terrible trouble with a simple partitioned table. Select queries are very slow. Ie SELECT ts::timestamptz, s1.sensor_id, s1.value FROM sensor_values s1 WHERE s1.sensor_id = ANY(ARRAY[596304,597992,610978,597998])