On Sat, Mar 23, 2013 at 1:35 AM, Adriano Lange <alange0...@gmail.com> wrote: > I have developed a new query optimizer for PostgreSQL and I would like to > share it with the community. The optimizer's name is Sampling and Dynamic > Programming (SDP). I put it into a plugin developed some years ago, named > LJQO: > > https://github.com/alange0001/ljqo.git
Looks great. Do you happen to have any papers or insight into why SDP works as well as it does? It isn't immediately clear to me why the cheapest left-deep tree is a good heuristic start point for the dynamic programming phase. Regards, Ants Aasma -- Cybertec Schönig & Schönig GmbH Gröhrmühlgasse 26 A-2700 Wiener Neustadt Web: http://www.postgresql-support.de -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
