Re: [HACKERS] Re: Apparent bug in _make_subplan

> After looking through all the references to varlevelsup, it's clear
> that all pieces of the system *except* subselect.c treat varlevelsup
> as a relative level number, so-many-levels-out-from-current-subplan.
> subselect.c has a couple of places that think nonzero varlevelsup
> is an absolute level number, with 1 as the top plan. This is certainly
> a source of bugs --- it happens to work for two-level plans, but will
> fail for anything more deeply nested. I will work on fixing subselect.c
> to bring it in line with the rest of the world...

varlevelsup was always intended to be relative.

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