fn new_join_conditions(
new_left_keys: &[Arc<dyn PhysicalExpr>],
new_right_keys: &[Arc<dyn PhysicalExpr>],
) -> Vec<(PhysicalExprRef, PhysicalExprRef)>fn new_join_conditions(
new_left_keys: &[Arc<dyn PhysicalExpr>],
new_right_keys: &[Arc<dyn PhysicalExpr>],
) -> Vec<(PhysicalExprRef, PhysicalExprRef)>