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Concatenating multiple rows into one field in MySQL

schedule Aug 12, 2023
Last updated
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MySQL
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We can concatenate multiple results into one field in MySQL using the GROUP_CONCAT(~) method.

Example

Consider the following table about whether students hold a drivers license:

student_id

full_name

age

has_license

1

Sky Towner

17

0

2

Ben Davis

19

1

3

Travis Apple

18

0

4

Arthur David

16

0

5

Benjamin Town

17

1

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

To concatenate the full_name of all students and return in a single row:

SELECT GROUP_CONCAT(full_name)
FROM drivers_license;
+--------------------------------------------------------------+
| GROUP_CONCAT(full_name) |
+--------------------------------------------------------------+
| Sky Towner,Ben Davis,Travis Apple,Arthur David,Benjamin Town |
+--------------------------------------------------------------+

For comparison, if we had not used GROUP_CONCAT(~) the result would look like below:

SELECT full_name FROM drivers_license;
+---------------+
| full_name |
+---------------+
| Sky Towner |
| Ben Davis |
| Travis Apple |
| Arthur David |
| Benjamin Town |
+---------------+
robocat
Published by Arthur Yanagisawa
Edited by 0 others
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