You might be interested in the AQO project that was presented at PGCon 2017: https://www.pgcon.org/2017/schedule/events/1086.en.html https://www.pgcon.org/2017

You might be interested in the AQO project that was presented at PGCon 2017: https://www.pgcon.org/2017/schedule/events/1086.en.html https://www.pgcon.org/2017/schedule/events/1086.en.html It's using machine learning techniques to improve cardinality estimates.