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Re: Performance issue: index not used on GROUP BY... - Mailing list pgsql-performance

From	Victor Yegorov
Subject	Re: Performance issue: index not used on GROUP BY...
Date	August 28, 2014 08:57:15
Msg-id	CAGnEbogEvqqdwGA_jrrdt_8S3dMvvSNdT=sna8jC87nRmAW+cA@mail.gmail.com Whole thread Raw
In response to	Performance issue: index not used on GROUP BY... (gmb <[email protected]>)
Responses	Re: Performance issue: index not used on GROUP BY...
List	pgsql-performance

2014-08-28 11:50 GMT+03:00 gmb <[email protected]>:

It seems as if the planner is not using the PRIMARY KEY as index which was
my assumption.

Can you send `EXPLAIN (analyze, buffers)` for your query instead?

It'll show exactly what's going on.

--
Victor Y. Yegorov

From: gmb
Date: 28 August 2014, 08:50:45
Subject: Performance issue: index not used on GROUP BY...

From: gmb
Date: 28 August 2014, 09:09:09
Subject: Re: Performance issue: index not used on GROUP BY...