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MySQL | NOT

Database
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MySQL
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Documentation
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Operators
schedule Jul 1, 2022
Last updated
local_offer MySQL
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tocTable of Contents
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MySQL's NOT operator can be used in conjunction with a WHERE clause to return values that do not satisfy a particular condition in the WHERE clause.

Syntax

SELECT column_name(s)
FROM table_name
WHERE NOT condition;

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 not 17 years old:

SELECT *
FROM studentsWHERE NOT age = 17;
+------------+--------+-------+--------------+------+----------+
| student_id | fname | lname | day_enrolled | age | username |
+------------+--------+-------+--------------+------+----------+
| 2 | Ben | Davis | 2016-04-20 | 19 | bdavis2 |
| 3 | Travis | Apple | 2018-08-14 | 18 | tapple3 |
| 4 | Arthur | David | 2016-04-01 | 16 | adavid4 |
+------------+--------+-------+--------------+------+----------+

NOT can be combined with other operators such as AND:

SELECT *
FROM students
WHERE NOT (age = 17 AND fname = 'Sky');
+------------+----------+-------+--------------+------+----------+
| student_id | fname | lname | day_enrolled | age | username |
+------------+----------+-------+--------------+------+----------+
| 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 |
+------------+----------+-------+--------------+------+----------+

We return all students except those that have age=17 and have fname='Sky'.

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Published by Arthur Yanagisawa
Edited by 0 others
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