SELECT INTO ステートメントを使って、書式付きデータをファイルにエクスポートできます。

SQL クエリを使ったデータのエクスポート

次のクエリは、comma-separated values（CSV）ファイルフォーマットにデータをエクスポートします。

C#

String connectionString = "Server=127.0.0.1;Port=8080;";

using (PrestoConnection connection = new PrestoConnection(connectionString)) {
  PrestoCommand cmd = new PrestoCommand("SELECT Id, Name INTO [csv://[Hive].[Default].Customers.txt] FROM [[Hive].[Default].Customers] WHERE Industry = 'Floppy Disks' ", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "Server=127.0.0.1;Port=8080;" 

Using connection As New PrestoConnection(connectionString)
  Dim cmd As New PrestoCommand("SELECT Id, Name INTO [csv://[Hive].[Default].Customers.txt] FROM [[Hive].[Default].Customers] WHERE Industry = 'Floppy Disks'", connection)
  Dim rowsAffected As Integer = cmd.ExecuteNonQuery()
End Using

C#

String connectionString = "Server=127.0.0.1;Port=8080;";

using (PrestoConnection connection = new PrestoConnection(connectionString)) {
  PrestoCommand cmd = new PrestoCommand("SELECT * INTO [[Hive].[Default].Customers] IN [csv://filename=c:/[Hive].[Default].Customers.csv;delimiter=tab] FROM [[Hive].[Default].Customers] WHERE Industry = 'Floppy Disks'", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "Server=127.0.0.1;Port=8080;" 

Using connection As New PrestoConnection(connectionString)
  Dim cmd As New PrestoCommand("SELECT * INTO [[Hive].[Default].Customers] IN [csv://filename=c:/[Hive].[Default].Customers.csv;delimiter=tab] FROM [[Hive].[Default].Customers] WHERE Industry = 'Floppy Disks'", connection)
  Dim rowsAffected As Integer = cmd.ExecuteNonQuery()
End Using