Tom Lane c6a11b89e4 Teach SPGiST to store nulls and do whole-index scans. ... This patch fixes the other major compatibility-breaking limitation of SPGiST, that it didn't store anything for null values of the indexed column, and so could not support whole-index scans or "x IS NULL" tests. The approach is to create a wholly separate search tree for the null entries, and use fixed "allTheSame" insertion and search rules when processing this tree, instead of calling the index opclass methods. This way the opclass methods do not need to worry about dealing with nulls. Catversion bump is for pg_am updates as well as the change in on-disk format of SPGiST indexes; there are some tweaks in SPGiST WAL records as well. Heavily rewritten version of a patch by Oleg Bartunov and Teodor Sigaev. (The original also stored nulls separately, but it reused GIN code to do so; which required undesirable compromises in the on-disk format, and would likely lead to bugs due to the GIN code being required to work in two very different contexts.)		2012-03-11 16:29:59 -04:00
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backend	Teach SPGiST to store nulls and do whole-index scans.	2012-03-11 16:29:59 -04:00
bin	psql: Remove useless code	2012-03-08 23:15:03 +02:00
include	Teach SPGiST to store nulls and do whole-index scans.	2012-03-11 16:29:59 -04:00
interfaces	ecpg: Fix off-by-one error in memory copying	2012-03-08 22:29:01 +02:00
makefiles	Add pg_upgrade test suite	2011-11-27 22:42:32 +02:00
pl	Fix I/O-conversion-related memory leaks in plpgsql.	2012-02-11 18:06:24 -05:00
port	Move CRC tables to libpgport, and provide them in a separate include file.	2012-02-28 19:53:39 -05:00
template	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
test	Teach SPGiST to store nulls and do whole-index scans.	2012-03-11 16:29:59 -04:00
timezone	Update copyright notices for year 2012.	2012-01-01 18:01:58 -05:00
tools	Fix MSVC builds for previous patch's addition of a src/port file.	2012-02-29 00:24:01 -05:00
tutorial	Update copyright notices for year 2012.	2012-01-01 18:01:58 -05:00
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:04 +02:00
bcc32.mak	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
DEVELOPERS	Replace a couple of references to files that no longer exist in the source	2009-05-04 08:08:47 +00:00
Makefile	Fix some oversights in distprep and maintainer-clean targets.	2011-03-10 00:04:05 -05:00
Makefile.global.in	ecpg: Improve test building	2012-02-02 20:33:29 +02:00
Makefile.shlib	Use single quotes in preference to double quotes for protecting pathnames.	2011-06-15 21:45:23 -04:00
nls-global.mk	Sort compendium lists for msgmerge	2011-12-27 20:22:51 +02:00
win32.mak	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00