Re: Fwd: Help required on query performance - Mailing list pgsql-sql

From Scott Marlowe
Subject Re: Fwd: Help required on query performance
Date
Msg-id dcc563d11001311654j4e09a853p9b8f46b0312ba2ad@mail.gmail.com
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In response to Fwd: Help required on query performance  (Dave Clements <dclements89@gmail.com>)
Responses Re: Fwd: Help required on query performance  (Dave Clements <dclements89@gmail.com>)
List pgsql-sql
On Sun, Jan 31, 2010 at 5:50 PM, Dave Clements <dclements89@gmail.com> wrote:
> Hello, I have this query in my system which takes around 2.5 seconds
> to run. I have diagnosed that the problem is actually a hashjoin on
> perm and s_ast_role tables. Is there a way I can avoid that join? I
> just want to change the
> query and no environment change.

What does

explain analyze select ... (rest of your query)

say?


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