I think that the PVC_RECURSE_WINDOWFUNCS flag shouldn't be used in
make_partial_grouping_target().
First, this function uses the grouping_target (see grouping_planner()) as the
input, and that should only contain the input expressions of window functions
as opposed to the window functions themselves. (make_window_input_target() is
responsible for pulling the input expressions from the window functions.)
Second, if a window function appeared in the result of
make_partial_grouping_target() for any reason, the Agg node would fail to
evaluate it. Am I wrong?
--
Antonin Houska
Web: https://www.cybertec-postgresql.com
