Josh Berkus <j...@agliodbs.com> writes: > On 02/26/2015 01:59 PM, Grzegorz Parka wrote: >> I'm interested in one of old TODO items related to the optimizer - >> 'Consider compressed annealing to search for query plans'.
> You might look at the earlier attempt to make the GEQO replacement > "pluggable". That project failed to complete sufficiently to be a > feature though, but it did enough to show that our current GEQO > implementation was suboptimal. > I'm currently searching for this project ... it was a GSOC project, but > I think before they required posting to Google Code. I seem to recall somebody demo'ing a simulated-annealing GEQO replacement at PGCon a couple years back. It never got to the point of being a submitted patch though. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers