Fix tsmatchsel() to account properly for null rows. ts_typanalyze.c computes MCE statistics as fractions of the non-null rows, which seems fairly reasonable, and anyway changing it in released versions wouldn't be a good idea. But then ts_selfuncs.c has to account for that. Failure to do so results in overestimates in columns with a significant fraction of null documents. Back-patch to 8.4 where this stuff was introduced.
Jesper Krogh Branch ------ REL9_0_STABLE Details ------- http://git.postgresql.org/pg/commitdiff/848cd3289e4d08f9a3c78f654ceb6e3f754e1dd3 Modified Files -------------- src/backend/tsearch/ts_selfuncs.c | 6 ++++++ src/include/catalog/pg_statistic.h | 2 ++ 2 files changed, 8 insertions(+), 0 deletions(-) -- Sent via pgsql-committers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
