Nikolay and Michael discuss query hints — what they are, what we do and don't have in PostgreSQL, and some other things in and around the ecosystem to be aware of.  Here are some links to some extra things they mentioned: Query planning (docs) https://www.postgresql.org/docs/current/runtime-config-query.html  Statistics used by the planner (docs) https://www.postgresql.org/docs/current/planner-stats.html  default_statistics_target  https://www.postgresql.org/docs/current/runtime-config-query.html#GUC-DEFAULT-STATISTICS-TARGET  Optimiser hints discussion (wiki) https://wiki.postgresql.org/wiki/OptimizerHintsDiscussion   An example mailing list thread from 2006 https://www.postgresql.org/message-id/flat/20061012151439.GT28647%40nasby.net   Peter Geoghegan tweet regarding invalid index https://twitter.com/petervgeoghegan/status/1599191964045672449  plantuner http://sigaev.ru/git/gitweb.cgi?p=plantuner.git;a=blob;hb=HEAD;f=README.plantuner pg_hint_plan https://github.com/ossc-db/pg_hint_plan  Aurora PostgreSQL query plan management https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraPostgreSQL.Optimize.overview.html  Building automatic adviser & performance tuning tools - Julien Rouhaud & Tatsuro Yamada: PGCon 2020 (the completely misremembered presentation Michael mentioned 🙈) https://www.youtube.com/watch?v=LQZK6p3SwwA  hypopg https://github.com/HypoPG/hypopg  ~~~ What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc! ~~~ Postgres FM is brought to you by: Nikolay Samokhvalov, founder of Postgres.ai Michael Christofides, founder of pgMustard With special thanks to: Jessie Draws for the amazing artwork