Alexander Korotkov <aekorot...@gmail.com> writes: > I have following proposal. Currently the ts_typanalyze function accumulates > frequency statistics for ts_vector using lossy counting technique. But no > frequency statistics is collecting over arrays. I'm going to generalize > ts_typanalyze to make it collecting statistics for arrays too. ts_typanalyze > internally uses lexeme comparison and hashing. I'm going to use functions > from default btree and hash opclasses of array element type in this > capacity. Collected frequency statistics for arrays can be used for && and > @> operators selectivity estimation.
It'd be better to just make a separate function for arrays, instead of trying to kluge ts_typanalyze to the point where it'd cover both cases. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers