postgresql/src/backend/optimizer/path/Makefile

#-------------------------------------------------------------------------
#
# Makefile--
#    Makefile for optimizer/path
#
# IDENTIFICATION
#    $PostgreSQL: pgsql/src/backend/optimizer/path/Makefile,v 1.19 2008/02/19 10:30:07 petere Exp $
#
#-------------------------------------------------------------------------

subdir = src/backend/optimizer/path
top_builddir = ../../../..
include $(top_builddir)/src/Makefile.global

OBJS = allpaths.o clausesel.o costsize.o equivclass.o indxpath.o \
       joinpath.o joinrels.o orindxpath.o pathkeys.o tidpath.o

include $(top_srcdir)/src/backend/common.mk
Simplify make files, add full dependencies. 1996-10-27 10:55:05 +01:00			`#-------------------------------------------------------------------------`
			`#`
			`# Makefile--`
			`# Makefile for optimizer/path`
			`#`
			`# IDENTIFICATION`
Refactor backend makefiles to remove lots of duplicate code 2008-02-19 11:30:09 +01:00			`# $PostgreSQL: pgsql/src/backend/optimizer/path/Makefile,v 1.19 2008/02/19 10:30:07 petere Exp $`
Simplify make files, add full dependencies. 1996-10-27 10:55:05 +01:00			`#`
			`#-------------------------------------------------------------------------`

Fix relative path references so that make knowns which dependencies refer to one another. Sort out builddir vs srcdir variable namings. Remove some now obsoleted make variables. 2000-08-31 18:12:35 +02:00			`subdir = src/backend/optimizer/path`
			`top_builddir = ../../../..`
			`include $(top_builddir)/src/Makefile.global`
Simplify make files, add full dependencies. 1996-10-27 10:55:05 +01:00
Refactor planner's pathkeys data structure to create a separate, explicit representation of equivalence classes of variables. This is an extensive rewrite, but it brings a number of benefits: * planner no longer fails in the presence of "incomplete" operator families that don't offer operators for every possible combination of datatypes. * avoid generating and then discarding redundant equality clauses. * remove bogus assumption that derived equalities always use operators named "=". * mergejoins can work with a variety of sort orders (e.g., descending) now, instead of tying each mergejoinable operator to exactly one sort order. * better recognition of redundant sort columns. * can make use of equalities appearing underneath an outer join. 2007-01-20 21:45:41 +01:00			`OBJS = allpaths.o clausesel.o costsize.o equivclass.o indxpath.o \`
Repair planning bugs caused by my misguided removal of restrictinfo link fields in JoinPaths --- turns out that we do need that after all :-(. Also, rearrange planner so that only one RelOptInfo is created for a particular set of joined base relations, no matter how many different subsets of relations it can be created from. This saves memory and processing time compared to the old method of making a bunch of RelOptInfos and then removing the duplicates. Clean up the jointree iteration logic; not sure if it's better, but I sure find it more readable and plausible now, particularly for the case of 'bushy plans'. 2000-02-07 05:41:04 +01:00			`joinpath.o joinrels.o orindxpath.o pathkeys.o tidpath.o`
Simplify make files, add full dependencies. 1996-10-27 10:55:05 +01:00
Refactor backend makefiles to remove lots of duplicate code 2008-02-19 11:30:09 +01:00			`include $(top_srcdir)/src/backend/common.mk`