Flash cards
Review the key moves
What is the main idea behind SQL RIGHT JOIN?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
Which statement best captures the main point of this lesson?
Complete the missing token from the example code.
___(s)Put the learning moves in the order that makes the concept easiest to apply.
Sql Right Join
The RIGHT JOIN returns all rows from the right table (table2), and only the matched rows from the left table (table1).
If there is no match in the left table, the result for the columns from the left table will be NULL.
The RIGHT JOIN and RIGHT OUTER JOIN keywords are equal - the OUTER keyword is optional.
RIGHT JOIN Syntax
SELECT
column_name(s)
FROM
table1
RIGHT JOIN
table2
ON
table1.column_name
=
table2.column_name
;Note
The syntax combines two tables based on a related column , and the ON keyword is used to specify the matching condition.
Demo Database
Below is a selection from the "Orders" table:
| OrderID | CustomerID | EmployeeID | OrderDate | ShipperID |
|---|---|---|---|---|
| 10308 | 2 | 7 | 1996-09-18 | 3 |
| 10309 | 37 | 3 | 1996-09-19 | 1 |
| 10310 | 77 | 8 | 1996-09-20 | 2 |
And a selection from the "Employees" table:
| EmployeeID | LastName | FirstName | BirthDate | Photo |
|---|---|---|---|---|
| 1 | Davolio | Nancy | 1968-12-08 | EmpID1.pic |
| 2 | Fuller | Andrew | 1952-02-19 | EmpID2.pic |
| 3 | Leverling | Janet | 1963-08-30 | EmpID3.pic |
Here we see that the related column between the two tables above, is the "EmployeeID" column.
SQL RIGHT JOIN Example
The following SQL will return all employees, and any orders they might have placed:
Example
SELECT Orders.OrderID, Employees.LastName, Employees.FirstName
FROM Orders
RIGHT JOIN Employees ON Orders.EmployeeID = Employees.EmployeeID
ORDER BY Orders.OrderID;Note
The RIGHT JOIN keyword returns all records from the right table (Employees), even if there are no matches in the left table (Orders).