queryAllAitSession method
查询对应账号中所有@的sessionId
Implementation
Future<List<String>> queryAllAitSession(String accId) async {
Database? db = await instance.database;
List<Map<String, dynamic>> result = await db!.query(table,
columns: [sessionIdColumn], where: '$myAccId = ?', whereArgs: [accId]);
return result.map((row) => row[sessionIdColumn] as String).toList();
}