Need some direction and syntax. Preemptive thanks for your advice. I can use select expert to get all customers of a specific types, but how would I exclude if customer is any other type?

cust, type#
Ed, 1
John, 2
Ed, 3
Bert, 2
John, 99

Most of the time a customer will have many different types.
Very rarely will a customer have just one or two types

Im trying to create a report which displays customer with a specified type#(s), kicker is, if customer has any other type, I don't want to display customer at all.

Ex. I want only customer type 1 and 2 but if they are also customer type 3, 4, 5,...,99 I don't want to see them. *Table above should only show Bert.

Thank you for your insights, will try.