Tom Lane 707867e9fd When we have successfully optimized a MIN or MAX aggregate into an indexscan, ...

the query result must be exactly one row (since we don't do this when there's
any GROUP BY).  Therefore any ORDER BY or DISTINCT attached to the query is
useless and can be dropped.  Aside from saving useless cycles, this protects
us against problems with matching the hacked-up tlist entries to sort clauses,
as seen in a bug report from Taiki Yamaguchi.  We might need to work harder
if we ever try to optimize grouped queries with this approach, but this
solution will do for now.

2008-03-27 19:06:23 +00:00

..

access

Fix heap_page_prune's problem with failing to send cache invalidation

2008-03-13 18:00:39 +00:00

bootstrap

Update copyrights in source tree to 2008.

2008-01-01 19:46:01 +00:00

catalog

Fix various infelicities that have snuck into usage of errdetail() and

2008-03-24 19:12:58 +00:00

commands

Fix various infelicities that have snuck into usage of errdetail() and

2008-03-24 19:12:58 +00:00

executor

Fix several memory leaks when rescanning SRFs. Arrange for an SRF's

2008-02-29 02:49:43 +00:00

lib

Update copyrights in source tree to 2008.

2008-01-01 19:46:01 +00:00

libpq

Since GSSAPI and SSPI authentication don't work in protocol version 2,

2008-02-08 17:58:46 +00:00

main

Update copyrights in source tree to 2008.

2008-01-01 19:46:01 +00:00

nodes

Add missing copyfuncs/equalfuncs support for AlterTSDictionaryStmt and

2008-02-07 20:19:47 +00:00

optimizer

When we have successfully optimized a MIN or MAX aggregate into an indexscan,

2008-03-27 19:06:23 +00:00

parser

Some variants of ALTER OWNER tried to make the "object" field of the

2008-02-07 21:07:55 +00:00

po

Translation updates

2008-03-14 04:46:30 +00:00

port

Add support for dlopen on recent NetBSD/MIPS, per Rémi Zara.

2008-03-05 21:20:47 +00:00

postmaster

Fix inappropriately-timed memory context switch in autovacuum_do_vac_analyze.

2008-03-14 23:49:33 +00:00

regex

Fix assorted security-grade bugs in the regex engine. All of these problems

2008-01-03 20:47:55 +00:00

rewrite

Update copyrights in source tree to 2008.

2008-01-01 19:46:01 +00:00

snowball

Update copyrights in source tree to 2008.

2008-01-01 19:46:01 +00:00

storage

Fix PREPARE TRANSACTION to reject the case where the transaction has dropped a

2008-03-04 19:54:13 +00:00

tcop

Fix vacuum so that autovacuum is really not cancelled when doing an emergency

2008-03-14 17:26:01 +00:00

tsearch

Fix memory arrangement of tsquery after removing stop words. It causes

2008-03-07 15:29:27 +00:00

utils

Fix various infelicities that have snuck into usage of errdetail() and

2008-03-24 19:12:58 +00:00

Makefile

Update copyrights in source tree to 2008.

2008-01-01 19:46:01 +00:00

nls.mk

Translation updates

2008-03-14 04:46:30 +00:00