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How to concatenate all values of a single column in MySQL?
You can use group_concat() along with concat() to concatenate all values of a single column. Let us first create a table −
mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, FirstName varchar(20) ); Query OK, 0 rows affected (0.73 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(FirstName) values('John');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable(FirstName) values('Larry');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable(FirstName) values('Chris');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable(FirstName) values('Robert');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable(FirstName) values('David');
Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+----+-----------+ | Id | FirstName | +----+-----------+ | 1 | John | | 2 | Larry | | 3 | Chris | | 4 | Robert | | 5 | David | +----+-----------+ 5 rows in set (0.00 sec)
Following is the query to concatenate all values of a single column in MySQL.
mysql> select group_concat(concat('"', FirstName, '"')) AS FirstName from DemoTable;This will produce the following output −
+-----------------------------------------+ | FirstName | +-----------------------------------------+ | "John","Larry","Chris","Robert","David" | +-----------------------------------------+ 1 row in set (0.05 sec)
Updated on: 30-Jul-2019
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