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Re: review: More frame options in window functions

Alvaro Herrera <alvherre@commandprompt.com>

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From: Alvaro Herrera <alvherre@commandprompt.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Dimitri Fontaine <dfontaine@hi-media.com>, Robert Haas <robertmhaas@gmail.com>, Martijn van Oosterhout <kleptog@svana.org>, Hitoshi Harada <umi.tanuki@gmail.com>, Erik Rijkers <er@xs4all.nl>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2010-02-12T15:49:34Z
Lists: pgsql-hackers 
Tom Lane escribió:
> Dimitri Fontaine <dfontaine@hi-media.com> writes:
> > Searching the archives ain't helping me refresh those memories. So it
> > seems the case for an extended opclass infrastructure, or a new side
> > one, is between thin an non-existent yet?
> 
> Yeah, I don't immediately see anything that would justify going to
> that level of effort.  Adding +/- as support functions for btree
> seems like the thing to do.

Would it work to use a fake access method instead?  If we add it to
btree, will we be able to backtrack and move that to a separate catalog
if we ever determine that it would have been better?

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support