mysql_create_procedures.txt

-- Procedure: GetMaxQuantity
DELIMITER //

CREATE PROCEDURE GetMaxQuantity()
BEGIN
    SELECT MAX(Quantity) AS MaxQuantity FROM OrderDetails;
END //

DELIMITER ;

-- Procedure: ManageBooking
DELIMITER //

CREATE PROCEDURE ManageBooking(IN orderID INT, IN deliveryDate DATE)
BEGIN
    UPDATE Orders SET DeliveryDate = deliveryDate WHERE OrderID = orderID;
    SELECT CONCAT('Order ', orderID, ' updated with new delivery date: ', deliveryDate) AS Message;
END //

DELIMITER ;

-- Procedure: UpdateBooking
DELIMITER //

CREATE PROCEDURE UpdateBooking(IN orderID INT, IN customerID INT, IN orderDate DATE, IN deliveryDate DATE)
BEGIN
    UPDATE Orders
    SET CustomerID = customerID,
        OrderDate = orderDate,
        DeliveryDate = deliveryDate
    WHERE OrderID = orderID;
    
    SELECT CONCAT('Order ', orderID, ' updated successfully.') AS Message;
END //

DELIMITER ;

-- Procedure: AddBooking
DELIMITER //

CREATE PROCEDURE AddBooking(IN orderID INT, IN orderDate DATE, IN deliveryDate DATE, IN customerID INT)
BEGIN
    INSERT INTO Orders (OrderID, OrderDate, DeliveryDate, CustomerID)
    VALUES (orderID, orderDate, deliveryDate, customerID);
    
    SELECT CONCAT('Order ', orderID, ' added successfully.') AS Message;
END //

DELIMITER ;

-- Procedure: CancelBooking
DELIMITER //

CREATE PROCEDURE CancelBooking(IN orderID INT)
BEGIN
    DELETE FROM Orders WHERE OrderID = orderID;
    
    SELECT CONCAT('Order ', orderID, ' canceled successfully.') AS Message;
END //

DELIMITER ;