Hash indexes

Nikolay and Michael discuss hash indexes in Postgres — what they are, some brief history, their pros and cons vs btrees, and whether or when they recommend using them.Update: the idea Nikolay mentioned at the end of this episode turns out to be a little fraught (and as such, inadvisable).  Here are some links to things they mentioned:Index types (docs) https://www.postgresql.org/docs/current/indexes-types.html  Re-introducing hash indexes in PostgreSQL (blog post by Haki Benita and Michael) https://hakibenita.com/postgresql-hash-index Hash indexes intro (docs) https://www.postgresql.org/docs/current/hash-intro.html Hash indexes implementation (docs) https://www.postgresql.org/docs/current/hash-implementation.html~~~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