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Tom Lane b21e665f2d Disable transforms that replaced AT TIME ZONE with RelabelType. 
These resulted in wrong answers if the relabeled argument could be matched
to an index column, as shown in bug #14504 from Evgeniy Kozlov.  We might
be able to resurrect these optimizations by adjusting the planner's
treatment of RelabelType, or by adjusting btree's rules for selecting
comparison functions, but either solution will take careful analysis
and does not sound like a fit candidate for backpatching.

I left the catalog infrastructure in place and just reduced the transform
functions to always-return-NULL.  This would be necessary anyway in the
back branches, and it doesn't seem important to be more invasive in HEAD.

Bug introduced by commit b8a18ad48.  Back-patch to 9.5 where that came in.

Report: https://postgr.es/m/20170118144828.1432.52823@wrigleys.postgresql.org
Discussion: https://postgr.es/m/18771.1484759439@sss.pgh.pa.us
2017-01-18 15:21:52 -05:00
..
backend Disable transforms that replaced AT TIME ZONE with RelabelType. 2017-01-18 15:21:52 -05:00
bin pg_upgrade: Fix for changed pg_ctl default stop mode 2017-01-13 16:19:48 -05:00
common pgindent run for 9.6 2016-06-09 18:02:36 -04:00
fe_utils Restore psql's SIGPIPE setting if popen() fails. 2016-12-07 12:39:24 -05:00
include Fix ALTER TABLE / SET TYPE for irregular inheritance 2017-01-09 19:26:58 -03:00
interfaces Fix buffer overflow on particularly named files and clarify documentation about 2016-12-22 08:29:13 +01:00
makefiles Fix typos in comments and doc 2016-01-28 16:47:36 +09:00
pl Be more careful about Python refcounts while creating exception objects. 2016-12-09 15:27:23 -05:00
port Make pgwin32_putenv() visit debug CRTs. 2016-12-03 15:46:42 -05:00
template Remove some remains from Alpha support removal 2015-10-29 16:40:14 -04:00
test Disable transforms that replaced AT TIME ZONE with RelabelType. 2017-01-18 15:21:52 -05:00
timezone Sync our copy of the timezone library with IANA release tzcode2016j. 2016-12-15 14:32:58 -05:00
tools Change qr/foo$/m to qr/foo\n/m, for Perl 5.8.8. 2016-11-07 20:27:35 -05:00
tutorial Update copyright for 2016 2016-01-02 13:33:40 -05:00
.gitignore Convert cvsignore to gitignore, and add .gitignore for build targets. 2010-09-22 12:57:04 +02:00
bcc32.mak Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
DEVELOPERS Replace a couple of references to files that no longer exist in the source 2009-05-04 08:08:47 +00:00
Makefile Install TAP test infrastructure so it's available for extension testing. 2016-09-23 15:50:00 -04:00
Makefile.global.in Make TAP test suites to work, when @INC does not contain current dir. 2016-10-07 22:01:04 +03:00
Makefile.shlib Fix misstatement in comment in Makefile.shlib. 2016-10-01 13:45:23 -04:00
nls-global.mk nls-global.mk: search build dir for source files, too 2016-06-07 18:55:18 -04:00
win32.mak Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00