Adding procedure in database - mysql

Question

I'm trying to create a procedure that adds data into two tables at the same time but using mySQL, but I don't have much experience using if/else statement in database so could someone tell me how I can fix my code
Here the Attributes:
Customer information: ID,Name, Address, Telephone.
Staff information: ID, Name, Phone
Camera/Len Type: ID,Name
Camera: ID, typeID, Model, Status, Color, Hiring Price (per day), Paying Price (in case of loss).
Len: ID, TypeID, Model, Status, Hiring Price (per day), Paying Price (in case of loss).
Order orderID, customerID, employeeID, hireDate, returnDate
OrderDetail: orderID, cameraID, lenID, cameraQuantity, lenQuantity, Status(paid/not paid), pStatus(Lost/Ok)
Here's the Procedure code:
DELIMITER $$
Create Procedure addOrder(IN cust_id int, IN camera_id int, IN len_id int,
IN emp_id int, IN c_quantity int,IN l_quantity int,
IN status char(30), IN p_Status char(30), IN hire_date date, IN return_date
date)
begin
Declare order_id int;
Declare hireTime int;
Declare totalC int;
Declare totalL int;
Declare totalP int;
Select order_id = max(orderID) from orders;
if orderID is null then set order_id = 1;
Set hireTime = DATEDILL(hire_date, return_date);
if hire_date == return_date then set hireTime = 1;
if p_Status = "Lost" then set
select totalC = hireTime*c_quantity*hPrice + pPrice from Camera as C
inner join orderDetail as OD on C.camID = OD.camera_id inner join Orders
as O on O.orderID = OD.order_id;
select totalL = hireTime*l_quantity*hPrice + pPrice from Lens as L
inner join orderDetail as OD on L.lenID = OD.len_id inner join Orders as
O on O.orderID = OD.order_id;
Set totalP = totalL + totalC;
else set
select totalC = hireTime*c_quantity*hPrice + pPrice from Camera as C
inner join orderDetail as OD on C.camID = OD.camera_id inner join Orders
as O on O.orderID = OD.order_id;
select totalL = hireTime*l_quantity*hPrice + pPrice from Lens as L
inner join orderDetail as OD on L.lenID = OD.len_id inner join Orders as
O on O.orderID = OD.order_id;
Set totalP = totalL + totalC;
end if;
insert into Orders(custID, empID, hireDate, returnDate)
values (cust_id, emp_id,hire_date, return_date);
insert into orderDetail(orderID, cameraID, lenID, totalPrice, camQuantity,
lenQuantity, status, pStatus) values (order_id,camera_id, len_id, totalP,
c_quantity, l_quantity, status, p_Status);
end $$
DELIMITER

Answer 1

I think u need to use view table to add all tables after that use stored procedure. And I give you and example I think u can figure out.
CREATE PROCEDURE [dbo].[sp_CMIDByID] #UID INT, #TID INT
AS
BEGIN
DECLARE #CMID INT
IF(#TID IS NULL AND #UID IS NOT NULL)
BEGIN
SELECT #TID = TID, #CMID = CMID FROM tbl_U WHERE UID = #UID
END
IF (#CMID IS NULL AND #TID IS NOT NULL)
BEGIN
SELECT #CMID = CMID FROM tbl_T WHERE TID = #TID
END
SELECT #CMID
END