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MySQL | OR

Database
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MySQL
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Documentation
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Operators
schedule Mar 10, 2022
Last updated
local_offer MySQL
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tocTable of Contents
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MySQL's OR operator can be used in conjunction with a WHERE clause to return values that satisfy at least one of the conditions separated by OR in the WHERE clause.

Syntax

SELECT column_name(s)
FROM table_name
WHERE condition1 OR condition2;

Examples

Consider the following table about some students:

student_id

fname

lname

day_enrolled

age

username

1

Sky

Towner

2015-12-03

17

stowner1

2

Ben

Davis

2016-04-20

19

bdavis2

3

Travis

Apple

2018-08-14

18

tapple3

4

Arthur

David

2016-04-01

16

adavid4

5

Benjamin

Town

2014-01-01

17

btown5

The above sample table can be created using the code here.

Basic usage

To return students who are either older than 17 or enrolled after 2017-01-01:

SELECT *
FROM studentsWHERE age > 17 OR day_enrolled > '2017-01-01';
+------------+--------+-------+--------------+------+----------+
| student_id | fname | lname | day_enrolled | age | username |
+------------+--------+-------+--------------+------+----------+
| 2 | Ben | Davis | 2016-04-20 | 19 | bdavis2 |
| 3 | Travis | Apple | 2018-08-14 | 18 | tapple3 |
+------------+--------+-------+--------------+------+----------+

We can see that Ben and Travis are the only students to satisfy at least one of the conditions.

Note that we need to specify the field name for every condition. Therefore, the following syntax is invalid:

SELECT *
FROM students
WHERE age = 17 OR 18;
robocat
Published by Arthur Yanagisawa
Edited by 0 others
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