Re: [PATCH] Incremental sort (was: PoC: Partial sort)

Alvaro Herrera  writes:
> ... all plan types that use only one child use the outer one.  They
> could use either, as long as it does that consistently, I think.

Yeah, exactly.  The outer/inner terminology is really only sensible
for join nodes, but there isn't a third child-plan pointer reserved
for single-child node types, so you gotta use one of those.  And
conventionally we use the "outer" one.

			regards, tom lane