public List <Haircut> GetHaircuts()
 {
     using var command   = _connection.CreateCommand();
     command.Connection  = _connection;
     command.CommandText =
         $"select {Haircut.GetIdColumnName()}, {Haircut.GetZodiacIdColumnName()}, {Haircut.GetMoonDayColumnName()}, " +
         $"{Haircut.GetMoonPhaseColumnName()}, {Haircut.GetPredictionColumnName()}, {Haircut.GetIsPositiveColumnName()} " +
         $"from {Haircut.GetTableName()};";
     Console.WriteLine("Execute SQL: " + command.CommandText);
     return(Factory.CreateHaircutList(command.ExecuteReader(), this));
 }
 public void SaveOrUpdate(Haircut haircut)
 {
     using var command   = _connection.CreateCommand();
     command.Connection  = _connection;
     command.CommandText =
         $"update {Haircut.GetTableName()} " +
         $"set {Haircut.GetZodiacIdColumnName()} = :zodiacId, " +
         $"{Haircut.GetMoonDayColumnName()} = :moonDay, " +
         $"{Haircut.GetMoonPhaseColumnName()} = :moonPhase, " +
         $"{Haircut.GetPredictionColumnName()} = :prediction, " +
         $"{Haircut.GetIsPositiveColumnName()} = :isPositive " +
         $"where {Haircut.GetIdColumnName()} = :id;";
     command.Parameters.AddWithValue("zodiacId", (int)haircut.Zodiac.Type);
     command.Parameters.AddWithValue("moonDay", haircut.MoonDay);
     command.Parameters.AddWithValue("moonPhase", haircut.MoonPhase);
     command.Parameters.AddWithValue("prediction", haircut.Prediction);
     command.Parameters.AddWithValue("isPositive", haircut.IsPositive);
     command.Parameters.AddWithValue("id", haircut.Id);
     Console.WriteLine("Execute SQL: " + command.CommandText);
     command.ExecuteNonQuery();
 }