Concatenating multiple rows into one field in MySQL

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schedule Jul 1, 2022

Last updated

local_offer MySQL

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 |
+---------------+

Published by Arthur Yanagisawa

Edited by 0 others

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