For situations in which there are a very large number of tuples in the join table, we can just disseminate information that allows sensors to identify tuples that definitely do not join with any predicates. Suppose we know that there are no predicates on attribute a in the range a1 a2. If we transmit this range into the network, then a sensor tuple, t, with value inside a1 a2 is guaranteed to not join with any predicates and need not be.