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/*
GetCustomerLevel(customerNumber, customerLevel)
Returns customerLevel for the customerNumber.
Uses and IF clause to determine customerLevel.
Usage: GetCustomerLevel(customerNumber)
Returns: customerLevel
*/
USE classicmodels;
DROP PROCEDURE IF EXISTS GetCustomerLevel;
DELIMITER $$
CREATE PROCEDURE GetCustomerLevel(
IN p_customerNumber int(11),
OUT p_customerLevel varchar(10))
BEGIN
DECLARE creditlim double;
SELECT creditlimit INTO creditlim
FROM customers
WHERE customerNumber = p_customerNumber;
IF creditlim > 50000 THEN
SET p_customerLevel = 'PLATINUM';
ELSEIF (creditlim <= 50000 AND creditlim >= 10000) THEN
SET p_customerLevel = 'GOLD';
ELSEIF creditlim < 10000 THEN
SET p_customerLevel = 'SILVER';
END IF;
END$$
DELIMITER ;