Sql加入，更新一個表格並從另一個表格生成輸出

Question

CREATE TABLE LeadCustomer 
( 
    CustomerID INTEGER NOT NULL, FirstName VARCHAR(20) NOT NULL, 
    Surname VARCHAR(40) NOT NULL, BillingAddress VARCHAR(200) NOT NULL, 
    email VARCHAR(30) NOT NULL  
) 

CREATE TABLE Flight 
(
FlightID INTEGER NOT NULL, FlightDate TIMESTAMP NOT NULL, 
Origin VARCHAR(30) NOT NULL, Destination VARCHAR(30) NOT NULL, 
MaxCapacity INTEGER NOT NULL, PricePerSeat DECIMAL NOT NULL 
) 

CREATE TABLE FlightBooking 
(
BookingID INTEGER NOT NULL, CustomerID INTEGER NOT NULL, FlightID INTEGER NOT NULL, 
NumSeats INTEGER NOT NULL, Status CHAR(1) NOT NULL, BookingTime TIMESTAMP NOT NULL, 
TotalCost DECIMAL 
) 

如果航班重新安排，我們如何生成需要聯繫的客戶列表？

到目前爲止，我已經完成了到：

SELECT 
LeadCustomer.CustomerID,Flight.FlightID 
FROM LeadCustomer 
inner join FlightBooking 
ON LeadCustomer.CustomerID = FlightBooking.CustomerID    
inner join 
Flight ON FlightBooking.FlightID = Flight.FlightID; 

，但不知道如何更新的飛行時間

Answer 1

我明白Flight.FlightDate等於FlightBooking.BookingTime。當您更新的第一列，您可以搜索，其中一個成爲不同於其他，如：

SELECT 
LeadCustomer.CustomerID,Flight.FlightID 
FROM LeadCustomer 
inner join FlightBooking 
ON LeadCustomer.CustomerID = FlightBooking.CustomerID    
inner join 
Flight ON FlightBooking.FlightID = Flight.FlightID 
WHERE Flight.FlightDate <> FlightBooking.BookingTime 

如果I'm錯誤你能不能解釋一下更好