Re: On disable_cost

On Wed, Oct 2, 2024 at 4:55 AM David Rowley <dgrowleyml@gmail.com> wrote:
> On Tue, 1 Oct 2024 at 06:17, Laurenz Albe <laurenz.albe@cybertec.at> wrote:
> > Why did you change "Disabled" from an integer to a boolean?
>
> I just don't think "Disabled Nodes" is all that self-documenting and
> I'm also unsure why the full integer value of disabled_nodes is
> required over just displaying the boolean value of if the node is
> disabled or not. Won't readers look at the remainder of the plan to
> determine information about which other nodes are disabled? Do we need
> to give them a running total?

I don't think this will produce the right answer in all cases because
disabled node counts don't propagate across subquery levels.

--
Robert Haas
EDB: http://www.enterprisedb.com