Calling a stored procedure from CodeIgniter's Active Record class

Question

In my CI application setup to query a mssql database. I want to execute a stored procedure from active record. But I

Answer 1

public function callSp_model{
   $sql = "CALL Materialwise_PURC_report(?,?,?)";
    $query = $this->lite_db->query($sql,array($supplierid,$fromdate,$todate));
    return $query->result_array(); }