sql value update problem

[eluser]Unknown[/eluser]
First of all sorry for my bad english.

I have a problem increasing value in sql table.

Table column type:

int(3)

Code is:

Code:

$this->db->query("UPDATE table SET field=field+1 WHERE x=1 LIMIT 1");

It is increasing 3 times. Example: value = 1, run the code, result = 4.

What is the problem, please help me.