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Store strings in variables and concatenate them to display them in a single column in MYSQL
For this, use CONCAT_WS() in MySQL. Let us first create a −
mysql> create table DemoTable1433 -> ( -> ClientId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> ClientFirstName varchar(20), -> ClientLastName varchar(20) -> ); Query OK, 0 rows affected (0.58 sec)
Insert some records in the table using insert −
mysql> insert into DemoTable1433(ClientFirstName,ClientLastName) values('David','Miller');
Query OK, 1 row affected (0.14 sec)Display all records from the table using select −
mysql> select * from DemoTable1433;
This will produce the following output −
+----------+-----------------+----------------+ | ClientId | ClientFirstName | ClientLastName | +----------+-----------------+----------------+ | 1 | David | Miller | +----------+-----------------+----------------+ 1 row in set (0.00 sec)
Following is the query to store strings in variables and concatenate them −
mysql> set @concat_variable:=(select concat_ws('-',ClientFirstName,ClientLastName) from DemoTable1433);
Query OK, 0 rows affected (0.00 sec)mysql> select @concat_variable;
This will produce the following output −
+------------------+ | @concat_variable | +------------------+ | David-Miller | +------------------+ 1 row in set (0.00 sec)
Updated on: 12-Nov-2019
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