postgresql/src
Tom Lane f4230d2937 Change patternsel() so that instead of switching from a pure
pattern-examination heuristic method to purely histogram-driven selectivity at
histogram size 100, we compute both estimates and use a weighted average.
The weight put on the heuristic estimate decreases linearly with histogram
size, dropping to zero for 100 or more histogram entries.
Likewise in ltreeparentsel().  After a patch by Greg Stark, though I
reorganized the logic a bit to give the caller of histogram_selectivity()
more control.
2008-03-09 00:32:09 +00:00
..
backend Change patternsel() so that instead of switching from a pure 2008-03-09 00:32:09 +00:00
bin Don't call AddUserToDacl on Cygwin 2008-02-29 23:31:20 +00:00
include Change patternsel() so that instead of switching from a pure 2008-03-09 00:32:09 +00:00
interfaces Include -lgss in libpq link, if available. Bjorn Munch 2008-03-05 05:39:11 +00:00
makefiles Reorganize some of the exports list generation code. It seems that this 2008-02-26 10:45:24 +00:00
pl Document the fix for perl 5.10 with this comment: 2008-01-23 00:55:47 +00:00
port Fix handling of restricted processes for Windows Vista (mainly), 2008-02-29 15:31:33 +00:00
template Use SYSV semaphores rather than POSIX on Darwin >= 6.0 (i.e., OS X 10.2 2007-09-26 00:32:46 +00:00
test Use windows DACL fix for pg_regress as well. 2008-03-04 15:38:31 +00:00
timezone Venezuela Time now means UTC-4:30, not UTC-4:00. Adjust our treatment 2008-03-02 00:10:22 +00:00
tools Support for building contrib/uuid-ossp with MSVC. 2008-02-28 12:17:59 +00:00
tutorial Update copyrights in source tree to 2008. 2008-01-01 19:46:01 +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 Testing commit stuff 2006-07-10 15:50:02 +00:00
Makefile Tsearch2 functionality migrates to core. The bulk of this work is by 2007-08-21 01:11:32 +00:00
Makefile.global.in Upgrade to Autoconf 2.61: 2008-02-17 16:36:43 +00:00
Makefile.shlib Don't build the win32 support files in the all target, only in distprep and 2008-02-26 14:26:16 +00:00
nls-global.mk When merging PO files, take into consideration translations in other PO 2006-04-05 13:40:15 +00:00
win32.mak Update supported standalone VC++ version to 7.1+ only, and fix 2007-08-03 10:47:11 +00:00