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Concatenate two columns in MySQL?
To concatenate two columns, use CONCAT() function in MySQL. The syntax is as follows −
select CONCAT(yourColumnName1, ' ',yourColumnName2) as anyVariableName from yourTableName;
To understand the above concept, let us create a table. The query to create a table is as follows −
mysql> create table concatenateTwoColumnsDemo −> ( −> StudentId int, −> StudentName varchar(200), −> StudentAge int −> ); Query OK, 0 rows affected (1.06 sec)
Now you can insert some records in the table. The query to insert records is as follows −
mysql> insert into concatenateTwoColumnsDemo values(1,'Sam',21); Query OK, 1 row affected (0.18 sec) mysql> insert into concatenateTwoColumnsDemo values(2,'David',24); Query OK, 1 row affected (0.17 sec) mysql> insert into concatenateTwoColumnsDemo values(3,'Carol',22); Query OK, 1 row affected (0.13 sec) mysql> insert into concatenateTwoColumnsDemo values(4,'Johnson',19); Query OK, 1 row affected (0.17 sec)
Display all records from the table with the help of select statement. The query is as follows −
mysql> select *from concatenateTwoColumnsDemo;
The following is the output −
+-----------+-------------+------------+ | StudentId | StudentName | StudentAge | +-----------+-------------+------------+ | 1 | Sam | 21 | | 2 | David | 24 | | 3 | Carol | 22 | | 4 | Johnson | 19 | +-----------+-------------+------------+ 4 rows in set (0.00 sec)
Implement the CONCAT() function to concatenate two columns. Here, we are concatenating columns StudentName and StudentAge. The query is as follows −
mysql> select CONCAT(StudentName, ' ',StudentAge) as NameAndAgeColumn from concatenateTwoColumnsDemo;
The following is the output displaying the concatenated columns −
+------------------+ | NameAndAgeColumn | +------------------+ | Sam 21 | | David 24 | | Carol 22 | | Johnson 19 | +------------------+ 4 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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