On Fri, Mar 17, 2023 at 6:15 AM Tom Lane wrote:
> Pushed. I thought the comment needed to be completely rewritten not just
> tweaked, and I felt it was probably reasonable to continue to exclude
> dummy paths from getting the more expensive treatment.
Yes agreed. Thanks for the changes and
Richard Guo writes:
> Attached is a patch for this change and the changes described upthread.
Pushed. I thought the comment needed to be completely rewritten not just
tweaked, and I felt it was probably reasonable to continue to exclude
dummy paths from getting the more expensive treatment.
On Tue, Dec 6, 2022 at 5:00 PM Richard Guo wrote:
> As we can see, MemoizePath can be generated for partitioned AppendPath
> but not for union-all AppendPath.
>
> For the fix I think we can relax the check in create_append_path and
> always use get_baserel_parampathinfo if the parent is a
While trying the codes of MemoizePath I noticed that MemoizePath cannot
be generated if inner path is a union-all AppendPath, even if it is
parameterized. And I found the problem is that for a union-all
AppendPath the ParamPathInfo is not created in the usual way. Instead
it is created with
