Question

Im doing a reservation application and was wondering how would i handle the following scenario; if a booking has 2 or more “extra” items on it how do i create a SP or a trigger even to handle this? the SP i have now works fine for a booking with a single extra item on it. Im i making any sense?

ALTER PROCEDURE [dbo].[CreateBooking]

@DateFrom datetime,
@DateTo datetime,
@RoomID int,
@PersonID int,
@ProductID int,
@OrderAmount int


AS
BEGIN TRANSACTION 
SET NOCOUNT ON;

INSERT INTO booking(created_on, startdate, enddate, room_id, person_id) 
VALUES (getdate(), @DateFrom, @DateTo, @RoomID, @PersonID)

IF @@error <> 0
ROLLBACK TRANSACTION 
ELSE

INSERT INTO booking_details (booking_id,prod_id,order_amount) 
VALUES (SCOPE_IDENTITY(), @ProductID, @OrderAmount)

COMMIT TRANSACTION

Answer 1

You can pass an xml parameter then loop through it and write them.

CREATE PROCEDURE
SelectByIdList(@productIds xml) AS

DECLARE @Products TABLE (ID int)

INSERT INTO @Products (ID) SELECT
ParamValues.ID.value(‘.’,’VARCHAR(20)’)
FROM @productIds.nodes(‘/Products/id’)
as ParamValues(ID)

SELECT * FROM
Products INNER JOIN
@Products p ON Products.ProductID = p.ID