clone_exp.setColumnIndex(new_idx);
PlanColumn new_col = state.plannerContext.getPlanColumn(clone_exp, orig_pc.getDisplayName(), orig_pc.getSortOrder(), orig_pc.getStorage());
assert (new_col != null);
outer_output_guids.set(new_idx, new_col.guid());
// new_output_guids.add(new_col.guid());
new_sorted_output_guids.put(new_idx, new_col.guid());
if (debug.val)
LOG.debug(String.format("OUTER OFFSET %d => %d [new_guid=%d]", orig_idx, new_idx, new_col.guid()));
}
// If we don't have this PlanColumn, that means that it isn't
// being passed up from the