Emre Hasegeli wrote: > > I guess multicolumn BRIN behaves similarly to B-tree or GiST. But I'm > > no expert, so I need someone knowledgeable to confirm this. If the > > following wording is OK, I will update the patch. > > Multicolumn BRIN is like GIN. Every column is indexed separately. > The order of the columns doesn't matter.
Right. You can use one index to cover all columns; the position of the column in the index won't matter for a query that uses one column. The only reason to have multiple BRIN indexes on a single table is to have a different pages_per_range. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers