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MySQL | CHAR_LENGTH method

schedule Aug 10, 2023
Last updated
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MySQL's CHAR_LENGTH(~) method returns the length of the input string measured in characters. It is synonymous with method CHARACTER_LENGTH.

Parameters

1. str | string

The string to return length for.

Return value

The length of the input string in characters.

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 the length of first names:

SELECT fname, CHAR_LENGTH(fname)
FROM students;
+----------+--------------------+
| fname | CHAR_LENGTH(fname) |
+----------+--------------------+
| Sky | 3 |
| Ben | 3 |
| Travis | 6 |
| Arthur | 6 |
| Benjamin | 8 |
+----------+--------------------+
5 rows in set (0.00 sec)

To return length of 'HELLO':

SELECT CHAR_LENGTH('HELLO');
+----------------------+
| CHAR_LENGTH('HELLO') |
+----------------------+
| 5 |
+----------------------+
1 row in set (0.00 sec)
robocat
Published by Arthur Yanagisawa
Edited by 0 others
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