getById method
Implementation
Future<RawRowData> getById(int id) async {
FieldData fieldData =
smd.getTableByTableId(table_id).getSelectFieldData(table_id);
WhereData whereData = WhereData();
whereData.set("id", SqlOperator.EQUAL, id);
RawTableData rawTableData = await select(fieldData, whereData);
return rawTableData.getRawRowData(0);
}