Concatenate columns from different tables in MySQL

You can use CONCAT(). Let us first create a table −

mysql> create table DemoTable1    -> (    -> FirstName varchar(20)    -> ); Query OK, 0 rows affected (0.90 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1 values('Chris'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable1 values('David'); Query OK, 1 row affected (0.12 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable1;

This will produce the following output −

+-----------+ | FirstName | +-----------+ | Chris     | | David     | +-----------+ 2 rows in set (0.00 sec)

Here is the query to create the second table −

mysql> create table DemoTable2    -> (    -> LastName varchar(20)    -> ); Query OK, 0 rows affected (0.95 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable2 values('Brown'); Query OK, 1 row affected (0.55 sec) mysql> insert into DemoTable2 values('Miller'); Query OK, 1 row affected (0.18 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable2;

This will produce the following output −

+----------+ | LastName | +----------+ | Brown    | | Miller   | +----------+ 2 rows in set (0.00 sec)

Here is the query to concatenate column from different tables −

mysql> select concat(tbl1.FirstName,' ',tbl2.LastName) from DemoTable tbl1    -> left join DemoTable2 tbl2    -> on tbl2.LastName='Brown' or tbl2.LastName='Miller';

This will produce the following output −

+------------------------------------------+ | concat(tbl1.FirstName,' ',tbl2.LastName) | +------------------------------------------+ | Chris Brown                              | | David Brown                              | | Chris Miller                             | | David Miller                             | +------------------------------------------+ 4 rows in set (0.04 sec)