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pgsql-server/src backend/optimizer/path/costsi ...

From: tgl(at)svr1(dot)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql-server/src backend/optimizer/path/costsi ...
Date: 2004-02-17 00:52:53
Message-ID: 20040217005253.DB637D1D412@svr1.postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
CVSROOT:	/cvsroot
Module name:	pgsql-server
Changes by:	tgl(at)svr1(dot)postgresql(dot)org	04/02/16 20:52:53

Modified files:
	src/backend/optimizer/path: costsize.c 
	src/backend/optimizer/util: relnode.c 
	src/backend/utils/adt: selfuncs.c 
	src/include/optimizer: pathnode.h 
	src/include/utils: selfuncs.h 

Log message:
	Make use of statistics on index expressions.  There are still some
	corner cases that could stand improvement, but it does all the basic
	stuff.  A byproduct is that the selectivity routines are no longer
	constrained to working on simple Vars; we might in future be able to
	improve the behavior for subexpressions that don't match indexes.


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