On Tue, Apr 14, 2020 at 2:44 PM Amit Langote <amitlangot...@gmail.com> wrote:
> Hi, > > Maybe I am missing something obvious, but is it intentional that > enable_indexscan is checked by cost_index(), that is, *after* creating > an index path? I was expecting that if enable_indexscan is off, then > no index paths would be generated to begin with, because I thought > they are optional. > I think the cost estimate of index paths is the same as other paths on that setting enable_xxx to off only adds a penalty factor (disable_cost) to the path's cost. The path would be still generated and compete with other paths in add_path(). Thanks Richard
