    function update_optiongroup_master() {
        global $db;

        $id = empty($this->params['id']) ? null : $this->params['id'];
        $og = new optiongroup_master($id);
        $oldtitle = $og->title;
        $og->update($this->params);

        // if the title of the master changed we should update the option groups that are already using it.
        if ($oldtitle != $og->title) {
            $db->sql('UPDATE '.$db->prefix.'optiongroup SET title="'.$og->title.'" WHERE title="'.$oldtitle.'"');
        }

        expHistory::back();
    }
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.