transferFee.id=MyMySqlConnection._connection.QueryFirstOrDefault<int?>(" select id from dc_base_amazon_fee where data_id=@data_id ",new{data_id=transferFee.data_id})??0;
transferFee.id=MyMySqlConnection._connection.QueryFirstOrDefault<int?>(" select id from dc_base_amazon_fee where data_id=@data_id ",new{data_id=transferFee.data_id})??0;