How many credit cards does Blanche Huels have?
SELECT count ( * )  FROM Customers_cards AS T1 JOIN Customers AS T2 ON T1.customer_id   =   T2.customer_id WHERE T2.customer_first_name   =   "Blanche" AND T2.customer_last_name   =   "Huels" AND T1.card_type_code   =   "Credit"
counting the number of credit cards = COUNT(*); for a specific person (Blanche Huels) involves joining customer information (Customers) with their cards (Customers_cards) and filtering by first and last name; credit cards are identified by card_type_code = 'Credit';