Tom Lane 9fd8843647 Fix mergejoin cost estimation so that we consider the statistical ranges of ... the two join variables at both ends: not only trailing rows that need not be scanned because there cannot be a match on the other side, but initial rows that will be scanned without possibly having a match. This allows a more realistic estimate of startup cost to be made, per recent pgsql-performance discussion. In passing, fix a couple of bugs that had crept into mergejoinscansel: it was not quite up to speed for the task of estimating descending-order scans, which is a new requirement in 8.3.		2007-12-08 21:05:11 +00:00
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bitmapset.h	Update CVS HEAD for 2007 copyright. Back branches are typically not	2007-01-05 22:20:05 +00:00
execnodes.h	Avoid incrementing the CommandCounter when CommandCounterIncrement is called	2007-11-30 21:22:54 +00:00
makefuncs.h	Make eval_const_expressions() preserve typmod when simplifying something like	2007-09-06 17:31:58 +00:00
memnodes.h	Adjust the output of MemoryContextStats() so that the stats for a	2007-08-07 06:25:14 +00:00
nodeFuncs.h	Update CVS HEAD for 2007 copyright. Back branches are typically not	2007-01-05 22:20:05 +00:00
nodes.h	Support SET FROM CURRENT in CREATE/ALTER FUNCTION, ALTER DATABASE, ALTER ROLE.	2007-09-03 18:46:30 +00:00
params.h	pgindent run for 8.3.	2007-11-15 21:14:46 +00:00
parsenodes.h	Code review for LIKE ... INCLUDING INDEXES patch. Fix failure to propagate	2007-12-01 23:44:44 +00:00
pg_list.h	Update CVS HEAD for 2007 copyright. Back branches are typically not	2007-01-05 22:20:05 +00:00
plannodes.h	Re-run pgindent with updated list of typedefs. (Updated README should	2007-11-15 22:25:18 +00:00
primnodes.h	Actually ... it's pretty silly that parse_oper.c doesn't set up the	2007-11-22 19:40:25 +00:00
print.h	Turn the rangetable used by the executor into a flat list, and avoid storing	2007-02-22 22:00:26 +00:00
readfuncs.h	Update CVS HEAD for 2007 copyright. Back branches are typically not	2007-01-05 22:20:05 +00:00
relation.h	Fix mergejoin cost estimation so that we consider the statistical ranges of	2007-12-08 21:05:11 +00:00
tidbitmap.h	Update CVS HEAD for 2007 copyright. Back branches are typically not	2007-01-05 22:20:05 +00:00
value.h	Update CVS HEAD for 2007 copyright. Back branches are typically not	2007-01-05 22:20:05 +00:00