Re: Merge Append Patch merged up to 85devel

> Can you provide some more details about the objective of this patch?  Or 
> a link to previous discussion?

Suppose, Greg's patch could be modified to support order OR index scans:
SELECT ... WHERE (c > 10 AND c < 20) OR (c > 100 AND C < 110) ORDER BY c DESC

with plan:
Result   -> Append       -> Backward index scan (c > 100 AND C < 110)       -> Backward index scan (c > 10 AND C < 20)

I suggested a similar patch two years ago: 
http://archives.postgresql.org/message-id/45742C51.9020602@sigaev.ru (4-th 
point) and subsequent discussion 
http://archives.postgresql.org/pgsql-patches/2006-12/msg00029.php

-- 
Teodor Sigaev                                   E-mail: teodor@sigaev.ru
  WWW: http://www.sigaev.ru/