I have two tables A (1 field, Name) e B (1 field, phone number).
A e B are joined with a one-to-many relationship.
I created a layout to show A records.
I want to show only A records where exist a relation in B.
For example I have 1000 name records in A and some phone number records in B.
In the layout I want to show only names with a phone number.
How can I do?