ある時点よりも前の日付に作成され、かつ自分のアカウントに関連していないテーブルを削除したい感じ

hoge.cs

if (IsNotWriting() == true)
{
    if ((DataCount = GetTotalRecords("Status")) > LeaveData)
    {
        using (var sqlc = new SQLiteConnection("Data Source=" + _DBdir + _DBfile))
        {
            sqlc.Open();
            
            using (SQLiteCommand cmd = sqlc.CreateCommand())
            {
                cmd.CommandText = "SELECT * FROM Status ORDER BY julianday(CreatedAt)";
                cmd.ExecuteNonQuery();

                cmd.CommandText = "SELECT CreatedAt FROM Status LIMIT 1 OFFSET " + (DataCount - LeaveData);
                TargetDT = cmd.ExecuteScalar().ToString();

                DateTime dt = DateTime.Parse(TargetDT);
                TargetDT = dt.ToString("yyyy-MM-dd HH:mm:ss");

                if (!(System.IO.File.Exists(_DBdir + _DBlock)))
                {
                    cmd.CommandText = "DELETE FROM Status WHERE julianday(CreatedAt) < julianday((datetime('" + TargetDT + "')))";
                }
                else
                {
                    Console.WriteLine("Krile is running. Skip reduce some tables.");
                    
                    // 動かないです
                    cmd.CommandText = "DELETE FROM Status WHERE julianday(CreatedAt) < julianday((datetime('" + TargetDT + "')))) AND NOT (RetweeterId IN(SELECT Id FROM Accounts) OR RetweetOriginalUserId IN(SELECT Id FROM Accounts) OR InReplyToOrRecipientUserId IN(SELECT Id FROM Accounts))";
                }
                
                cmd.ExecuteNonQuery();
            }
            
            sqlc.Close();
        }

        Console.WriteLine("Status reduced.");
    }
}