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Concatenate all the columns in a single new column with MySQL
Let us first create a −
mysql> create table DemoTable1396 -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Name varchar(40), -> Age int -> ); Query OK, 0 rows affected (0.93 sec)
Insert some records in the table using insert −
mysql> insert into DemoTable1396(Name,Age) values('Chris',21);
Query OK, 1 row affected (0.18 sec)
mysql> insert into DemoTable1396(Name,Age) values('David',24);
Query OK, 1 row affected (0.34 sec)
mysql> insert into DemoTable1396(Name,Age) values('Bob',26);
Query OK, 1 row affected (0.40 sec)Display all records from the table using select −
mysql> select * from DemoTable1396;
This will produce the following output −
+----+-------+------+ | Id | Name | Age | +----+-------+------+ | 1 | Chris | 21 | | 2 | David | 24 | | 3 | Bob | 26 | +----+-------+------+ 3 rows in set (0.00 sec)
Following is the query to concatenate columns in a single new column −
mysql> select Id,Name,Age, concat(Id,Name,Age) as AllColumns from DemoTable1396;
This will produce the following output −
+----+-------+------+------------+ | Id | Name | Age | AllColumns | +----+-------+------+------------+ | 1 | Chris | 21 | 1Chris21 | | 2 | David | 24 | 2David24 | | 3 | Bob | 26 | 3Bob26 | +----+-------+------+------------+ 3 rows in set (0.00 sec)
Updated on: 11-Nov-2019
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