SQL Join Types: Right (Outer) Join with Exclusion

Tables

Table 1: Employees

EmployeeID

LastName

FirstName

BirthDate

Photo

Callahan 

Laura 

1/9/1958 

EmpID8.pic 

Dodsworth 

Anne 

7/2/1969 

EmpID9.pic 

10 

West 

Adam 

9/19/1928 

EmpID10.pic 

Table 2: Orders

OrderID

CustomerID

EmployeeID

OrderDate

ShipperID

10255 

68 

7/12/1996 

10262 

65 

7/22/1996 

10263 

20 

7/23/1996 

10268 

33 

7/30/1996 

Note: There is no record with EmployeeID = 10 (West Adam).

Query

If you need a place to try this query, try here: https://www.w3schools.com/sql/trysql.asp?filename=trysql_op_in

SELECT Orders.OrderID, Employees.LastName, Employees.FirstName
FROM Orders
  RIGHT JOIN Employees
    ON Orders.EmployeeID = Employees.EmployeeID
WHERE Employees.EmployeeID IS NULL
ORDER BY Orders.OrderID;

Result

OrderID

LastName

FirstName

NULL

West

Adam 

© 2019, Alejandro G. Carlstein Ramos Mejia. All rights reserved.

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