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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)
Updated on: 13-Dec-2019
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