Adding integers from a variable to a MySQL column?

To set a variable, use MySQL SET. For adding integers from a variable, use UPDATE and SET as in the below syntax −

set @anyVariableName:=yourValue; update yourTableName set yourColumnName=yourColumnName+ @yourVariableName;

Let us first create a table −

mysql> create table DemoTable -> ( -> Number int -> ); Query OK, 0 rows affected (0.68 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values(10); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values(20); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable values(40); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values(60); Query OK, 1 row affected (0.13 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable;

Output

This will produce the following output −

+--------+ | Number | +--------+ | 10 | | 20 | | 40 | | 60 | +--------+ 4 rows in set (0.00 sec)

Following is the query to add integers from a variable to MySQL column −

mysql> set @intValue:=100; Query OK, 0 rows affected (0.00 sec) mysql> update DemoTable set Number=Number+ @intValue; Query OK, 4 rows affected (0.15 sec) Rows matched: 4 Changed: 4 Warnings: 0

Let us check table records once again −

mysql> select *from DemoTable;

Output

This will produce the following output −

+--------+ | Number | +--------+ | 110 | | 120 | | 140 | | 160 | +--------+ 4 rows in set (0.00 sec)