On 08/12/2013 01:31 PM, tubadzin wrote: > Hi users. > I want to sure, that is no this implementation in Postgresql: > For Sorte Merge Join Alghoritm: > If the large input arrives sorted, > g-join joins its pages with the buffer pool contents by strictly > increasing join key values and the join output is also strictly > sorted.
I'm not quite sure what you're asking. We have a merge sort already, and AFAIK it doesn't resort the input if it was sorted in an earlier step. -- Josh Berkus PostgreSQL Experts Inc. http://pgexperts.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
