[EMAIL PROTECTED] writes:
> I wonder why my ecxt_scantuple has a TupleDesc matching the subplan's
> tlist, not my plan's tlist.
That's the way it's supposed to be --- the scantuple slot is for
scanning your subplan's output.
> 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.
That makes no sense at all. ExecProject can't be expected to access
output columns of the current node --- they haven't been computed yet.
regards, tom lane
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
