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