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MySQL concatenation operator?
You can use in-built function CONCAT() from MySQL. The syntax is as follows −
SELECT CONCAT(('(',yourColumnName1,',', yourColumnName2,',',yourColumnName3,...N')')as anyVariableName from yourTableName;To understand the above syntax, let us first create a table. The query to create a table is as follows −
mysql> create table Concatenation_OperatorDemo -> ( -> -> VendorId int, -> VendorName varchar(100), -> VendorCountry varchar(100) -> ); Query OK, 0 rows affected (0.69 sec)
Insert some records in the table using insert command. The query is as follows −
mysql> insert into Concatenation_OperatorDemo values(101,'Carol','US'); Query OK, 1 row affected (0.19 sec) mysql> insert into Concatenation_OperatorDemo values(102,'Bob','UK'); Query OK, 1 row affected (0.18 sec) mysql> insert into Concatenation_OperatorDemo values(103,'John','US'); Query OK, 1 row affected (0.14 sec) mysql> insert into Concatenation_OperatorDemo values(104,'David','UK'); Query OK, 1 row affected (0.25 sec)
Display all records from the table using select statement. The query is as follows −
mysql> select *from Concatenation_OperatorDemo;
The following is the output −
+----------+------------+---------------+ | VendorId | VendorName | VendorCountry | +----------+------------+---------------+ | 101 | Carol | US | | 102 | Bob | UK | | 103 | John | US | | 104 | David | UK | +----------+------------+---------------+ 4 rows in set (0.00 sec)
Now you can concat N number of columns using concat() function. Here, we will concat all three columns from the above table. The query to concat the column values are as follows −
mysql> select concat('(',VendorId,',', VendorName,',', VendorCountry,')')as
ConcatenationDemo
-> from Concatenation_OperatorDemo;The following is the output −
+-------------------+ | ConcatenationDemo | +-------------------+ | (101,Carol,US) | | (102,Bob,UK) | | (103,John,US) | | (104,David,UK) | +-------------------+ 4 rows in set (0.00 sec)
Updated on: 25-Jun-2020
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