You can include one or more SELECT statements in a batch. For example:

IF EXISTS( SELECT *
            FROM SYSTAB
            WHERE table_name='Employees' )
THEN
   SELECT   Surname AS LastName,
            GivenName AS FirstName
   FROM Employees;
   SELECT Surname, GivenName
   FROM Customers;
   SELECT Surname, GivenName
   FROM Contacts;
END IF;

The alias for the result set is necessary only in the first SELECT statement, as the server uses the first SELECT statement in the batch to describe the result set.

A RESUME statement is necessary following each query to retrieve the next result set.