Re: WIP Join Removal - Mailing list pgsql-patches

From Simon Riggs
Subject Re: WIP Join Removal
Date
Msg-id 1220372127.4371.456.camel@ebony.2ndQuadrant
Whole thread Raw
In response to Re: WIP Join Removal  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-patches
On Tue, 2008-09-02 at 12:02 -0400, Tom Lane wrote:
> Simon Riggs <simon@2ndQuadrant.com> writes:
> >> Oh. How does the query look like after removing the join, then?
>
> > Same answer, just slower. Removing the join makes the access to a into a
> > SeqScan, whereas it was a two-table index plan when both tables present.
>
> I don't really believe this...

Yes, this will be changed. No need to review further at this stage.

--
 Simon Riggs           www.2ndQuadrant.com
 PostgreSQL Training, Services and Support


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