Tom Lane 25549edb26 Fix equivclass.c's not-quite-right strategy for handling X=X clauses. ...

The original coding correctly noted that these aren't just redundancies
(they're effectively X IS NOT NULL, assuming = is strict).  However, they
got treated that way if X happened to be in a single-member EquivalenceClass
already, which could happen if there was an ORDER BY X clause, for instance.
The simplest and most reliable solution seems to be to not try to process
such clauses through the EquivalenceClass machinery; just throw them back
for traditional processing.  The amount of work that'd be needed to be
smarter than that seems out of proportion to the benefit.

Per bug #5084 from Bernt Marius Johnsen, and analysis by Andrew Gierth.

2009-09-29 01:20:34 +00:00

..

backend

Fix equivclass.c's not-quite-right strategy for handling X=X clauses.

2009-09-29 01:20:34 +00:00

bin

Sync psql's scanner with recent changes in backend scanner's flex rules.

2009-09-27 03:27:24 +00:00

include

Remove no-longer-needed ExecCountSlots infrastructure.

2009-09-27 21:10:53 +00:00

interfaces

Added some explanation about how the parser is generated, taken from an email by

2009-09-28 08:50:57 +00:00

makefiles

Update of install-sh, mkinstalldirs, and associated configury

2009-08-26 22:24:44 +00:00

pl

Convert a perl array to a postgres array when returned by Set Returning Functions as well as non SRFs. Backpatch to 8.1 where these facilities were introduced. with a little help from Abhijit Menon-Sen.

2009-09-28 17:31:12 +00:00

port

Don't error out if recycling or removing an old WAL segment fails at the end

2009-09-13 18:32:08 +00:00

template

Tweak configure to attempt to add -qnoansialias to CFLAGS whenever running

2009-02-11 20:02:40 +00:00

test

Fix equivclass.c's not-quite-right strategy for handling X=X clauses.

2009-09-29 01:20:34 +00:00

timezone

Update the tznames reference files, and add IDT (Israel Daylight Time)

2009-09-06 15:25:23 +00:00

tools

Ooops, fix to Genbki.pm for ROWTYPE_OID wasn't quite right. Also, make a few

2009-09-27 02:14:04 +00:00

tutorial

8.4 pgindent run, with new combined Linux/FreeBSD/MinGW typedef list

2009-06-11 14:49:15 +00:00

bcc32.mak

Remove old-style win32 client-only visual c++ build infrastructure for everything except

2007-03-05 14:18:38 +00:00

DEVELOPERS

Replace a couple of references to files that no longer exist in the source

2009-05-04 08:08:47 +00:00

Makefile

Update of install-sh, mkinstalldirs, and associated configury

2009-08-26 22:24:44 +00:00

Makefile.global.in

Update of install-sh, mkinstalldirs, and associated configury

2009-08-26 22:24:44 +00:00

Makefile.shlib

Derived files that are shipped in the distribution used to be built in the

2009-08-28 20:26:19 +00:00

nls-global.mk

Update of install-sh, mkinstalldirs, and associated configury

2009-08-26 22:24:44 +00:00

win32.mak

Update supported standalone VC++ version to 7.1+ only, and fix

2007-08-03 10:47:11 +00:00