You can use the SELECT INTO statement to export formatted data to a file.

Data Export with an SQL Query

The following query exports data into a file formatted in comma-separated values (CSV):

SELECT Id, Name INTO [csv://Account.txt] FROM [Account] WHERE FirstName = 'Bob'

You can specify other formats in the file URI. The possible delimiters are tab, semicolon, and comma with the default being a comma. The following example exports tab-separated values:

SELECT Id, Name INTO [csv://Account.txt;delimiter=tab] FROM [Account] WHERE FirstName = 'Bob'

C#

String connectionString = "AWS Access Key=xxx;AWS Secret Key=xxx;Domain=amazonaws.com;AWS Region=OREGON;";

using (AmazonDynamoDBConnection connection = new AmazonDynamoDBConnection(connectionString)) {
  AmazonDynamoDBCommand cmd = new AmazonDynamoDBCommand("SELECT Id, Name INTO [csv://Account.txt] FROM [Account] WHERE FirstName = 'Bob' ", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "AWS Access Key=xxx;AWS Secret Key=xxx;Domain=amazonaws.com;AWS Region=OREGON;" 

Using connection As New AmazonDynamoDBConnection(connectionString)
  Dim cmd As New AmazonDynamoDBCommand("SELECT Id, Name INTO [csv://Account.txt] FROM [Account] WHERE FirstName = 'Bob'", connection)
  Dim rowsAffected As Integer = cmd.ExecuteNonQuery()
End Using

You can specify other file formats in the URI. The following example exports tab-separated values:

C#

String connectionString = "AWS Access Key=xxx;AWS Secret Key=xxx;Domain=amazonaws.com;AWS Region=OREGON;";

using (AmazonDynamoDBConnection connection = new AmazonDynamoDBConnection(connectionString)) {
  AmazonDynamoDBCommand cmd = new AmazonDynamoDBCommand("SELECT * INTO [Account] IN [csv://filename=c:/Account.csv;delimiter=tab] FROM [Account] WHERE FirstName <> 'Bob'", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "AWS Access Key=xxx;AWS Secret Key=xxx;Domain=amazonaws.com;AWS Region=OREGON;" 

Using connection As New AmazonDynamoDBConnection(connectionString)
  Dim cmd As New AmazonDynamoDBCommand("SELECT * INTO [Account] IN [csv://filename=c:/Account.csv;delimiter=tab] FROM [Account] WHERE FirstName <> 'Bob'", connection)
  Dim rowsAffected As Integer = cmd.ExecuteNonQuery()
End Using