{"type":"rich","version":"1.0","provider_name":"Transistor","provider_url":"https://transistor.fm","author_name":"Postgres FM","title":"Extended Statistics","html":"<iframe width=\"100%\" height=\"180\" frameborder=\"no\" scrolling=\"no\" seamless src=\"https://share.transistor.fm/e/13ff79f4\"></iframe>","width":"100%","height":180,"duration":1961,"description":"Nikolay and Michael discuss the CREATE STATISTICS feature in Postgres — what it's for, how often it's used, and how to spot cases where it would help.  Here are some links to things they mentioned:CREATE STATISTICS https://www.postgresql.org/docs/current/sql-createstatistics.htmlcitext https://www.postgresql.org/docs/current/citext.htmlStatistics Used by the Planner https://www.postgresql.org/docs/current/planner-stats.htmldefault_statistics_target https://www.postgresql.org/docs/current/runtime-config-query.html#GUC-DEFAULT-STATISTICS-TARGETTomáš Vondra on Postgres TV https://www.youtube.com/watch?v=8la-OWfD3VIRecent commit to Postgres 18 for pg_upgrade https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=1fd1bd871012732e3c6c482667d2f2c56f1a9395Multivariate Statistics Examples https://www.postgresql.org/docs/current/multivariate-statistics-examples.htmlExtended statistics (README) https://github.com/postgres/postgres/blob/master/src/backend/statistics/READMEHow we used Postgres extended statistics to achieve a 3000x speedup (blog post by Jared Rulison) https://medium.com/affinity-engineering/how-we-used-postgres-extended-statistics-to-achieve-a-3000x-speedup-ea93d3dcdc61~~~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 produced by:Michael Christofides, founder of pgMustardNikolay Samokhvalov, founder of Postgres.aiWith credit to:Jessie Draws for the elephant artwork","thumbnail_url":"https://img.transistorcdn.com/NFbJlGhGV5mzIU1kM0iZ823A69pjZUNX40LszVO5LKI/rs:fill:0:0:1/w:400/h:400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS9zaG93/LzMyMTQ3LzE3MTA3/OTEzODMtYXJ0d29y/ay5qcGc.webp","thumbnail_width":300,"thumbnail_height":300}