Task: Text to Code
Input (English): Step 1: For each row in Customers table, find the corresponding rows in Customers_Cards table.
Step 2: find Customers's customer_id, customer_first_name of the results of step 1 whose card_number not equals Credit
Output (English): SELECT T1.customer_id , T1.customer_first_name FROM Customers AS T1 JOIN Customers_Cards AS T2 WHERE T2.card_number ! = "Credit"