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Replacing a string in MySQL

Database
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MySQL
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Functions Cookbooks
schedule Jul 1, 2022
Last updated
local_offer MySQL
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tocTable of Contents
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We can replace a particular string with another string in MySQL using the REPLACE(~) method.

Example

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.

To update records in this table that contain the string 'dav' in their username and replace it with 'DAV':

UPDATE students
SET username = REPLACE(username, 'dav', 'DAV');

SELECT * FROM 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 |
+------------+----------+--------+--------------+------+----------+

Note that the usernames for Ben and Arthur have now been updated to bDAVis2 and aDAVid4 respectively.

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Published by Arthur Yanagisawa
Edited by 0 others
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