Returns a TRUE value if each logical expression is TRUE.
This procedure lists all customers with credit limits between two values (supplied by the user and stored in the variables low-credit and hi-credit). The expressions Customer.CreditLimit >= low-credit and Customer.CreditLimit <= hi-credit are logical expressions because each yields a true or false value. Using the AND operator to join these logical expressions results in a logical expression that follows the WHERE keyword.
r-and.p
DEFINE VARIABLE low-credit LIKE credit-limit LABEL "Low Credit Limit". DEFINE VARIABLE hi-credit LIKE credit-limit LABEL "High Credit Limit". REPEAT: SET low-credit hi-credit WITH FRAME cr-range. FOR EACH Customer NO-LOCK WHERE (Customer.CreditLimit >= low-credit) AND (Customer.CreditLimit <= hi-credit): DISPLAY Customer.CustNum Customer.Name Customer.CreditLimit. END. END. |