Skip to content

Instantly share code, notes, and snippets.

Last active March 28, 2018 18:12
  • Star 5 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
Star You must be signed in to star a gist
What would you like to do?
B-tree index bloat estimation
/* The bloat estimation queries moved to this respository:
Copy link

The bloat for pg_operator on a database I just looked at returned -80 as the bloat ratio with this query.

Copy link

ioguix commented Oct 8, 2014

Hi darkixion,

Sorry for the late answer, I never noticed your comment.

As explained in my various blog posts, this table is using the "name" type, leading to really bad estimations. You have to filter out indexes that we can not have a good estimation using the "is_na" field.

See "Known bug" in

I should add links to my blog posts as documentation or put these queries in a repository with a proper README at some point...

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment