PG Doc comments form <noreply(at)postgresql(dot)org> writes:
> I think the documentation should mention one particular aspect of b-tree
> partial indexes:
> Say we have a row that satisfy a partial index's predicate. That row will be
> referenced by the partial index. Say now that this row gets updated in such
> a way that the updated row no longer satisfies the predicate. The entry of
> that row in the index (more precisely, the row previous version) is still
> kept in a leaf node of the b-tree until a VACUUM is issued on the index's
> table.
How is this different from the behavior for any other dead row version?
regards, tom lane