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2686ee1b7c
Follow on patch in the multi-variate statistics patch series.
CREATE STATISTICS s1 WITH (dependencies) ON (a, b) FROM t;
ANALYZE;
will collect dependency stats on (a, b) and then use the measured
dependency in subsequent query planning.
Commit 7b504eb282 added
CREATE STATISTICS with n-distinct coefficients. These are now
specified using the mutually exclusive option WITH (ndistinct).
Author: Tomas Vondra, David Rowley
Reviewed-by: Kyotaro HORIGUCHI, Álvaro Herrera, Dean Rasheed, Robert Haas
and many other comments and contributions
Discussion: https://postgr.es/m/56f40b20-c464-fad2-ff39-06b668fac47c@2ndquadrant.com
17 lines
451 B
Makefile
17 lines
451 B
Makefile
#-------------------------------------------------------------------------
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#
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# Makefile--
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# Makefile for statistics
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#
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# IDENTIFICATION
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# src/backend/statistics/Makefile
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#
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#-------------------------------------------------------------------------
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subdir = src/backend/statistics
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top_builddir = ../../..
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include $(top_builddir)/src/Makefile.global
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OBJS = extended_stats.o dependencies.o mvdistinct.o
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include $(top_srcdir)/src/backend/common.mk
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