Query hints

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.plantunerpg_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.aiMichael Christofides, founder of pgMustardWith special thanks to:Jessie Draws for the amazing artwork