array( 'name' => 'COL_FORCE_INIT', 'type' => 'VARCHAR', 'constraint' => '2', ), 'COL_SWL' => array( 'name' => 'COL_SWL', 'type' => 'VARCHAR', 'constraint' => '2', ), ); $this->dbforge->modify_column($this->config->item('table_name'), $fields); } public function down() { echo "Not possible, sorry."; } }