Peter Geoghegan <p...@heroku.com> writes: > On Thu, Feb 18, 2016 at 9:40 AM, Tom Lane <t...@sss.pgh.pa.us> wrote: >> I think this is a bug and we ought to fix the code to include the >> metapage in the reported index_size. Thoughts?
> I tend to agree, but I think you should note that specifically in the > documentation. I'm in favor of tools like pgstattuple and pageinspect > going into this kind of detail in their documentation generally. Yeah ... the numbers already appear not to add up because the root page is counted in index_size but not any other column, so there's already something worthy of explanation there. Maybe something like "The reported index_size will normally correspond to two more pages than are accounted for by internal_pages + leaf_pages + empty_pages + deleted_pages, because it also includes the index's metapage and root page". regards, tom lane -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers