Re: [HACKERS] Join optimization for inheritance tables

2009-07-06 Thread Nedyalko Borisov
Tom Lane wrote: Nedyalko Borisov writes: In summary, we are making two suggestions: 1. Extend the optimizer to consider joins between child tables when hierarchies are joined together. We already handle this for the case where the join is nestloop with inner index scan, and I'

[HACKERS] Join optimization for inheritance tables

2009-06-26 Thread Nedyalko Borisov
We've created some basic implementation, just to verify the benefits of these ideas. The initial results seem promising as we observed decreased execution time and for large data set the query execution time could be several times faster than before. We would greatly appreciate your comments, thoughts or suggestions that you might have regarding these ideas. Regards, Nedyalko Borisov and Herodotos Herodotou -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers