Difference between RIGHT & LEFT JOIN vs RIGHT & LEFT OUTER JOIN in SQL [duplicate]

Answer 1

There is no difference between RIGHT JOIN and RIGHT OUTER JOIN. Both are the same. That means that LEFT JOIN and LEFT OUTER JOIN are the same.

Visual Representation of SQL Joins

Answer 2

Nice explanation of SQL Join:

Reference: link

Answer 3

What is result difference between:

RIGHT JOIN and RIGHT OUTER JOIN

No difference.

LEFT JOIN and LEFT OUTER JOIN ?

No difference.

Simply put, the OUTER keyword is optional. You can include it or omit it without affecting the resultset.

Answer 4

Here's a very nice Visual Explanation of joins generally by our very own Jeff Atwood. A right outer join is the same as a right join, and left join and left outer join are also the same.