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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)
Updated on: 30-Jun-2020
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