postgres

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Tom Lane 17804fa71b Prefer actual constants to pseudo-constants in equivalence class machinery.

generate_base_implied_equalities_const() should prefer plain Consts over
other em_is_const eclass members when choosing the "pivot" value that
all the other members will be equated to.  This makes it more likely that
the generated equalities will be useful in constraint-exclusion proofs.
Per report from Rushabh Lathia.

2012-10-26 14:19:34 -04:00

allpaths.c

Fix PARAM_EXEC assignment mechanism to be safe in the presence of WITH.

2012-09-05 12:55:01 -04:00

clausesel.c

Fix planner to pass correct collation to operator selectivity estimators.

2012-07-08 23:51:08 -04:00

costsize.c

Fix typo in previous MSC commit.

2012-10-07 19:56:26 -04:00

equivclass.c

Prefer actual constants to pseudo-constants in equivalence class machinery.