How to display column values as CSV in MySQL?

To display column values as CSV, use GROUP_CONCAT().

Let us first create a table −

mysql> create table DemoTable786 (    StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    StudentName varchar(100) )   AUTO_INCREMENT=101; Query OK, 0 rows affected (0.70 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable786(StudentName) values('Chris'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable786(StudentName) values('Robert'); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable786(StudentName) values('Mike'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable786(StudentName) values('Sam'); Query OK, 1 row affected (0.12 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable786;

This will produce the following output -

+-----------+-------------+ | StudentId | StudentName | +-----------+-------------+ | 101 | Chris | | 102 | Robert | | 103 | Mike | | 104 | Sam | +-----------+-------------+ 4 rows in set (0.00 sec)

Following is the query to select columns as CSV in MySQL −

mysql> select group_concat(StudentId),group_concat(StudentName) from DemoTable786;

This will produce the following output -

+-------------------------+---------------------------+ | group_concat(StudentId) | group_concat(StudentName) | +-------------------------+---------------------------+ | 101,102,103,104 | Chris,Robert,Mike,Sam | +-------------------------+---------------------------+ 1 row in set (0.00 sec)