SELECT card_type_code FROM Customers_cards GROUP BY card_type_code ORDER BY count(*) DESC LIMIT 1
Return the code of the card type that is most common.
SELECT card_type_code FROM Customers_cards GROUP BY card_type_code ORDER BY count ( * ) DESC LIMIT 1
select card_type_code from customers_cards group by card_type_code order by count ( * ) desc limit value
Return the code of the card type that is most common .