PG Doc comments form <nore...@postgresql.org> writes: > In the documentation on > https://www.postgresql.org/account/comments/new/15/indexes-multicolumn.html/ > Constraints on columns to the right of these columns are checked in the > index, so they save visits to the table proper, but they do not reduce the > portion of the index that has to be scanned.
> "so they save visits to the table proper" should be "so they save visits to > the table heap". Doesn't seem like an improvement from here, especially not with one eye on the non-heap table AMs that are being worked on. regards, tom lane