如何使用sqlflite在数据库中保存日期时间？

dependencies:
  sqlflite: ^2.0.0

DateTime dateTime = DateTime.now();
int timestamp = dateTime.millisecondsSinceEpoch;

await db.insert('table_name', {'datetime_column': timestamp});

DateTime dateTime = DateTime.now();
String datetimeString = dateTime.toIso8601String();

await db.insert('table_name', {'datetime_column': datetimeString});

List<Map<String, dynamic>> results = await db.query('table_name');
List<DateTime> datetimes = results.map((row) {
  int timestamp = row['datetime_column'];
  return DateTime.fromMillisecondsSinceEpoch(timestamp);
}).toList();

List<Map<String, dynamic>> results = await db.query('table_name');
List<DateTime> datetimes = results.map((row) {
  String datetimeString = row['datetime_column'];
  return DateTime.parse(datetimeString);
}).toList();