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DROP PROCEDURE IF EXISTS GetCustomerLevel3;
DELIMITER $$
CREATE PROCEDURE GetCustomerLevel3(
IN pCustomerNumber INT,
OUT pCustomerLevel VARCHAR(20))
BEGIN
DECLARE credit DECIMAL(10,2) DEFAULT 0;
#SET pCustomerLevel = 'LEAD'; # Sets a default value.
SELECT creditLimit
INTO credit
FROM customers
WHERE customerNumber = pCustomerNumber;
IF credit > 50000 THEN
SET pCustomerLevel = 'PLATINUM';
ELSEIF credit <= 50000 AND credit > 10000 THEN
SET pCustomerLevel = 'GOLD';
ELSE
SET pCustomerLevel = 'SILVER';
END IF;
END$$
DELIMITER ;
CALL GetCustomerLevel3(141, @level);
SELECT @level;
CALL GetCustomerLevel3(103, @level);
SELECT @level;
CALL GetCustomerLevel3(447, @level);
SELECT @level;