Function write_by_semantic_type 

fn write_by_semantic_type<K>(
    table_data: &mut TableData,
    semantic_type: SemanticType,
    ktv_iter: impl Iterator<Item = (K, ColumnDataType, Option<ValueData>)>,
    one_row: &mut Vec<Value>,
) -> Result<()>
where
    K: AsRef<str> + Into<String>,