On Thu, Oct 22, 2009 at 6:22 AM, Kenneth Marshall k...@rice.edu wrote:
On Wed, Oct 21, 2009 at 03:51:25PM -0700, Doug Cole wrote:
I have a reporting query that is taking nearly all of it's time in aggregate
functions and I'm trying to figure out how to optimize it. The query takes
[mailto:pgsql-performance-ow...@postgresql.org] On Behalf Of Nikolas
Everett
Sent: Thursday, October 22, 2009 4:48 AM
To: Doug Cole
Cc: pgsql-performance
Subject: Re: [PERFORM] optimizing query with multiple aggregates
So you've got a query like:
SELECT SUM(CASE WHEN field = 0 AND field 10 THEN 1
On Wed, Oct 21, 2009 at 10:21 PM, Doug Cole dougc...@gmail.com wrote:
On Wed, Oct 21, 2009 at 5:39 PM, Merlin Moncure mmonc...@gmail.com wrote:
On Wed, Oct 21, 2009 at 6:51 PM, Doug Cole dougc...@gmail.com wrote:
I have a reporting query that is taking nearly all of it's time in
aggregate
On 10/21/09 3:51 PM, Doug Cole dougc...@gmail.com wrote:
I have a reporting query that is taking nearly all of it's time in aggregate
functions and I'm trying to figure out how to optimize it. The query takes
approximately 170ms when run with select *, but when run with all the
aggregate
I have a reporting query that is taking nearly all of it's time in aggregate
functions and I'm trying to figure out how to optimize it. The query takes
approximately 170ms when run with select *, but when run with all the
aggregate functions the query takes 18 seconds. The slowness comes from
On Wed, Oct 21, 2009 at 6:51 PM, Doug Cole dougc...@gmail.com wrote:
I have a reporting query that is taking nearly all of it's time in aggregate
functions and I'm trying to figure out how to optimize it. The query takes
approximately 170ms when run with select *, but when run with all the
On Wed, Oct 21, 2009 at 5:39 PM, Merlin Moncure mmonc...@gmail.com wrote:
On Wed, Oct 21, 2009 at 6:51 PM, Doug Cole dougc...@gmail.com wrote:
I have a reporting query that is taking nearly all of it's time in aggregate
functions and I'm trying to figure out how to optimize it. The query
On Wed, Oct 21, 2009 at 6:51 PM, Doug Cole dougc...@gmail.com wrote:
repeated across many different x,y values and fields to build out several
histograms of the data. The main culprit appears to be the CASE statement,
but I'm not sure what to use instead. I'm sure other people have had
