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f41803bb39
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.
25 lines
664 B
Makefile
25 lines
664 B
Makefile
#-------------------------------------------------------------------------
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#
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# Makefile--
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# Makefile for optimizer/path
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#
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# IDENTIFICATION
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# $PostgreSQL: pgsql/src/backend/optimizer/path/Makefile,v 1.18 2007/01/20 20:45:38 tgl Exp $
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#
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#-------------------------------------------------------------------------
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subdir = src/backend/optimizer/path
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top_builddir = ../../../..
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include $(top_builddir)/src/Makefile.global
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OBJS = allpaths.o clausesel.o costsize.o equivclass.o indxpath.o \
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joinpath.o joinrels.o orindxpath.o pathkeys.o tidpath.o
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all: SUBSYS.o
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SUBSYS.o: $(OBJS)
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$(LD) $(LDREL) $(LDOUT) SUBSYS.o $(OBJS)
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clean:
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rm -f SUBSYS.o $(OBJS)
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