On Wed, Apr 6, 2022 at 3:58 PM Etsuro Fujita <etsuro.fuj...@gmail.com> wrote: > I have committed the patch after modifying it as such.
The patch calls trivial_subqueryscan() during create_append_plan() to determine the triviality of a SubqueryScan that is a child of an Append node. Unlike when calling it from set_subqueryscan_references(), this is done before some post-processing such as set_plan_references() on the subquery. The reason why this is safe wouldn't be that obvious, so I added to trivial_subqueryscan() comments explaining this. Attached is a patch for that. Best regards, Etsuro Fujita
Improve-comments-for-trivial_subqueryscan.patch
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