Re: weird execution plan

From: David G Johnston <david(dot)g(dot)johnston(at)gmail(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: weird execution plan
Date: 2014-09-12 02:45:05
Message-ID: 1410489905373-5818733.post@n5.nabble.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-performance

Huang, Suya wrote
> Can someone figure out why the first query runs so slow comparing to the
> second one? They generate the same result...

Try: EXPLAIN (ANALYZE, BUFFERS)

I believe you are only seeing caching effects.

David J.

--
View this message in context: http://postgresql.1045698.n5.nabble.com/weird-execution-plan-tp5818730p5818733.html
Sent from the PostgreSQL - performance mailing list archive at Nabble.com.

In response to

Responses

Browse pgsql-performance by date

  From Date Subject
Next Message Huang, Suya 2014-09-12 03:33:42 Re: how to change the provoke table in hash join
Previous Message Huang, Suya 2014-09-12 02:26:04 weird execution plan