[PERFORM] Unsubscribe

 Please unsubscribe me!  Thank you!         Also, it would be better to have a message foot saying how to unsubscribe.

[PERFORM] postgresql geqo optimization

I have a question with regard to GEQO optimizer of Postgresql.   For complex queries with over 12 tables in a join, (12 is the default value), the Postgresql optimizer by default will not use the dynamic programming style optimizer. Instead, it uses genetic algorithm to compute a sub-optimal query