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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
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.. | ||
data | ||
expected | ||
input | ||
output | ||
sql | ||
.gitignore | ||
GNUmakefile | ||
Makefile | ||
parallel_schedule | ||
pg_regress_main.c | ||
pg_regress.c | ||
pg_regress.h | ||
README | ||
regress.c | ||
regressplans.sh | ||
resultmap | ||
serial_schedule | ||
standby_schedule |
Documentation concerning how to run these regression tests and interpret the results can be found in the PostgreSQL manual, in the chapter "Regression Tests".