hi, We have a GIN index on jsonb_col. We always get Bitmap Index Scan + Bitmap Heap Scan when we do things like SELECT COUNT(*) FROM mytable WHERE jsonb_col ? 'key1' Theoretically, could support be added for Index-only scans on GIN indexes when only a COUNT() is requested? Thanks, Seamus PS. Here is the real query analyze: https://gist.github.com/seamusabshere/b9d72132361fa598f7a431fa1bcb120f -- Seamus Abshere, SCEA http://faraday.io https://github.com/seamusabshere http://linkedin.com/in/seamusabshere -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general