On Wed, May 10, 2006 at 09:47:07AM -0500, Dave Dutcher wrote:
> The hash lines mean your tables are being joined by hash joins. You
> should read this page for more info:
>
> http://www.postgresql.org/docs/8.1/interactive/performance-tips.html
You might also want to read
http://www.pervasivepost
I will try answering your questions. Please note that I am a newbie myself.
Clemens Eisserer wrote
> All primary keys are indixed, and this is what explain tells me:
> Unique (cost=15.67..16.69 rows=34 width=115)
> -> Sort (cost=15.67..15.75 rows=34 width=115)
> Sort Key: customer.em
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of
> Clemens Eisserer
> Sent: Wednesday, May 10, 2006 6:50 AM
> To: pgsql-performance@postgresql.org
> Subject: [PERFORM] Question about explain-command...
>
> What does the hash-lines mean, does that
