Re: join removal - Mailing list pgsql-hackers

From Robert Haas
Subject Re: join removal
Date
Msg-id 603c8f071003281255l6189a719o8bb7e3a3fa509ec5@mail.gmail.com
Whole thread Raw
In response to Re: join removal  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: join removal
List pgsql-hackers
On Sun, Mar 28, 2010 at 2:10 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
>> On Sun, Mar 28, 2010 at 2:04 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>> * in a new file in plan/.  Not sure if it's worth this, though your
>>> thought that we might add more logic later makes it more defensible.
>
>> I sort of like the last of these ideas though I'm at a loss for what
>> to call it.  Otherwise I kind of like planmain.c.
>
> joinremoval.c ?

Maybe, except as I mentioned in the email linked upthread, my plan for
implementing inner join removal would also include allowing join
reordering in cases where we currently don't.  So I don't want to
sandbox it too tightly as join removal, per se, though that's
certainly what we have on the table ATM.  It's more like advanced
open-heart join-tree surgery - like prepjointree, but much later in
the process.

...Robert


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