Display all the column values in a single row separated by comma in MySQL?

For this, use GROUP_CONCAT() and CONCAT(). Let us first create a table −

mysql> create table DemoTable1807      (      Id int      ); Query OK, 0 rows affected (0.00 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1807 values(101); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1807 values(102); Query OK, 1 row affected (0.00 sec) mysql> insert into DemoTable1807 values(103); Query OK, 1 row affected (0.00 sec)

Display all records from the table using select statement −

mysql> select * from DemoTable1807;

This will produce the following output −

+------+ | Id   | +------+ |  101 | |  102 | |  103 | +------+ 3 rows in set (0.00 sec)

Here is the query to convert SQL query to MySQL −

mysql> select group_concat(concat('[',Id,']'))  from DemoTable1807; 

This will produce the following output −

+----------------------------------+ | group_concat(concat('[',Id,']')) | +----------------------------------+ | [101],[102],[103]                | +----------------------------------+ 1 row in set (0.00 sec)