$where=Common::format(" store_id in({0}) and buyer_id in({1}) and order_state not in({2})",$storeIds,$memberIds,'-1,0');
// $where['store_id']=array('in',$storeIds);
// $where['buyer_id']=array('in',$memberIds);
// $where['order_state']=array('notin','-1,0');
// $where=$this->db->getSqlWhereByArray($where);
$res=$this->db->from($this->_tableName)->where($where)->select(" buyer_id as buyerId,store_id as storeId,(SUM(order_amount)-SUM(refund_amount)) AS orderTotal")->group('buyer_id')->group('store_id')->fetchAll();