Implement a functionality to return the number of affected rows (updated/deleted/inserted).
We will need to introduce a result object which will be returned after ever WRITE query. The result object will have an affectedRows property which will represent a number of actually affected/changed rows.
One difference between MySQL and CUBRID in this sense is that CUBRID always updates the row if the condition matches. In contrast, MySQL reports that a row has matched by was not updated if the target column has identical data.