OR Operator works togther with WHERE Clause, OR operator display records when any condition is met. OR Operator is a part of the logical operator.
In SELECT Statement
Syntax:-
SELECT column(s)
FROM table_name
WHERE condition1 OR condition2..
Example:- Suppose we have employees table which has 7 records
+----+------------+-----------+----------------+-----------+
| id | first_name | last_name | email | country |
+----+------------+-----------+----------------+-----------+
| 1 | John | Tailor | john@abc.com | USA |
| 2 | Rom | Tailor | rom@abc.com | USA |
| 3 | Andrew | Symonds | andrew@abc.com | Australia |
| 4 | Miacle | clerk | miacle@abc.com | Australia |
| 5 | Sachin | Tendulkar | sachin@abc.com | India |
| 6 | Virat | Kohli | virat@abc.com | India |
| 7 | rohit | NULL | rohit@abc.com | India |
Now, we have to get the employees which country has INDIA OR USA.
SELECT * FROM employees where country='India' OR country='USA';
Output:-
+----+------------+-----------+----------------+---------+
| id | first_name | last_name | email | country |
+----+------------+-----------+----------------+---------+
| 1 | John | Tailor | john@abc.com | USA |
| 2 | Rom | Tailor | rom@abc.com | USA |
| 5 | Sachin | Tendulkar | sachin@abc.com | India |
| 6 | Virat | Kohli | virat@abc.com | India |
| 7 | rohit | NULL | rohit@abc.com | India |
+----+------------+-----------+----------------+---------+
5 rows in set (0.00 sec)