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How to concatenate more than 2 fields with SQL?
To concatenate more than 2 fields with SQL, you can use CONCAT() or CONCAT_WS() function. The syntax is as follows. Let us first see using CONCAT().
SELECT CONCAT(yourColumnName1,'/',yourColumnName2, '/',yourColumnName3, '/',......N) AS anyVariableName FROM yourTableName;
The syntax is as follows:
SELECT CONCAT_WS(‘/’,yourColumnName1,yourColumnName2,.....N) AS anyVariableName FROM yourTableName;
To understand the above syntax, let us create a table. The query to create a table is as follows:
mysql> create table MoreThan2ColumnConcat -> ( -> Id int, -> Name varchar(20), -> Age int, -> Marks int -> ); Query OK, 0 rows affected (2.59 sec)
Insert some records in the table using insert command. The query is as follows:
mysql> insert into MoreThan2ColumnConcat values(1,'John',24,89); Query OK, 1 row affected (0.17 sec) mysql> insert into MoreThan2ColumnConcat values(11,'Larry',25,90); Query OK, 1 row affected (0.21 sec) mysql> insert into MoreThan2ColumnConcat values(15,'Mike',26,79); Query OK, 1 row affected (0.13 sec) mysql> insert into MoreThan2ColumnConcat values(16,'Sam',21,99); Query OK, 1 row affected (0.14 sec)
Now you can display all records from the table using select statement. The query is as follows:
mysql> select *from MoreThan2ColumnConcat;
The following is the output:
+------+-------+------+-------+ | Id | Name | Age | Marks | +------+-------+------+-------+ | 1 | John | 24 | 89 | | 11 | Larry | 25 | 90 | | 15 | Mike | 26 | 79 | | 16 | Sam | 21 | 99 | +------+-------+------+-------+ 4 rows in set (0.00 sec)
Here is the query to concatenate more than two fields with CONCAT().
mysql> select concat(Id,'/',Name, '/',Age, '/',Marks) as ConcatMoreFields from MoreThan2ColumnConcat;
The following is the output:
+------------------+ | ConcatMoreFields | +------------------+ | 1/John/24/89 | | 11/Larry/25/90 | | 15/Mike/26/79 | | 16/Sam/21/99 | +------------------+ 4 rows in set (0.00 sec)
Let us see the query to concatenate more than two fields using CONCAT_WS().
mysql> select concat_ws('/',Id,Name,Age,Marks) as ConcatMoreFields from MoreThan2ColumnConcat;The following is the output:
+------------------+ | ConcatMoreFields | +------------------+ | 1/John/24/89 | | 11/Larry/25/90 | | 15/Mike/26/79 | | 16/Sam/21/99 | +------------------+ 4 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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