Hi, In our scenario, we can have a relational expression that is composed of a single logical table function scan operator (i.e., the logical table function scan operator if the root of the relational expression). We would like to be able to differentiate this with scenarios where this operator appears as a leaf of some other operators. However, I am not able to find a way to properly express this as a rule, e.g., by restricting a rule to match only from the root of the relational expression. Or is there another way to achieve this ?
Thanks, Regards -- Renaud Delbru
