Robert Haas escribió: > We allow extensibility and hooks in other parts of the database where > the use case is pretty thin and tenuous. I betcha there aren't many > people who try writing their own eqjoinsel() either.
The PostGIS guys do implement their own selectivity estimators. In fact it was them that first implemented pluggability in that area, AFAIR. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
