Hi all,
I wonder why my ecxt_scantuple has a TupleDesc matching the subplan's tlist,
not my plan's tlist. Basically, my question is what is x in
econtext->ecxt_scantuple = x ?
I have written a new executor node Foo, with corresponding ExecFoo and make_foo
functions. I have also written a new Expr type called Bar, along with a
ExecEvalBar.
In make_foo I append some Bar columns. When I try to evaluate the Bar columns
in ExecFoo via ExecProject, I need the Bar columns to access each other.
But sadly, the ecxt_scantuple doesn't have any Bar columns because it has a
TupleDesc from the subplan.
What are the steps I have to take to make sure I can access my Bar columns
(which only exist in Foo) in ExecEvalBar? Where do I get a TupleTableSlot with
the desired TupleDesc from?
I'll be happy to provide more information, if needed.
Regards
Peter
---------------------------(end of broadcast)---------------------------
TIP 4: Have you searched our list archives?
http://archives.postgresql.org
