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Tom Lane 1a77f8b63d Avoid scanning nulls at the beginning of a btree index scan. ... If we have an inequality key that constrains the other end of the index, it doesn't directly help us in doing the initial positioning ... but it does imply a NOT NULL constraint on the index column. If the index stores nulls at this end, we can use the implied NOT NULL condition for initial positioning, just as if it had been stated explicitly. This avoids wasting time when there are a lot of nulls in the column. This is the reverse of the examples given in bugs #6278 and #6283, which were about failing to stop early when we encounter nulls at the end of the indexscan.		14 years ago
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backend	Avoid scanning nulls at the beginning of a btree index scan.	14 years ago
bin	Remove hard-coded "\connect postgres" from pg_dumpall.	14 years ago
include	Refactor xlog.c to create src/backend/postmaster/startup.c	14 years ago
interfaces	Clean up whitespace and indentation in parser and scanner files	14 years ago
makefiles	Fix pgxs.mk to always add --dbname=$(CONTRIB_TESTDB) to REGRESS_OPTS.	15 years ago
pl	Clean up whitespace and indentation in parser and scanner files	14 years ago
port	Fix typo in pg_srand48 (srand48 in older branches).	15 years ago
template	Remove cvs keywords from all files.	15 years ago
test	Fix btree stop-at-nulls logic properly.	14 years ago
timezone	Update docs to point to the timezone library's new home at IANA.	14 years ago
tools	Add simple script to check for right recursion in Bison grammars.	14 years ago
tutorial	Stamp copyrights for year 2011.	15 years ago
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	15 years ago
DEVELOPERS	…
Makefile	Fix some oversights in distprep and maintainer-clean targets.	15 years ago
Makefile.global.in	Make distprep and *clean build targets recurse into all subdirectories.	15 years ago
Makefile.shlib	Use single quotes in preference to double quotes for protecting pathnames.	15 years ago
bcc32.mak	Remove useless whitespace at end of lines	15 years ago
nls-global.mk	Add the possibility to pass --flag arguments to xgettext calls	15 years ago
win32.mak	Remove useless whitespace at end of lines	15 years ago