Refactor join_is_removable() to separate out distinctness-proving logic. Extracted from pending unique-join patch, since this is a rather large delta but it's simply moving code out into separately-accessible subroutines.
I (tgl) did choose to add a bit more logic to rel_supports_distinctness, so that it verifies that there's at least one potentially usable unique index rather than just checking indexlist != NIL. Otherwise there's no functional change here. David Rowley Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/f338dd7585cab45da9053e883ad65a440a99d3be Modified Files -------------- src/backend/optimizer/plan/analyzejoins.c | 244 +++++++++++++++++++----------- 1 file changed, 157 insertions(+), 87 deletions(-) -- Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
