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 MovieRuntime, MovieRating INTO [csv://Movies.txt] FROM [Movies] WHERE MovieRating = 'R'

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 MovieRuntime, MovieRating INTO [csv://Movies.txt;delimiter=tab] FROM [Movies] WHERE MovieRating = 'R'

C#

String connectionString = "User=abc123; Password=abcdef;";

using (ApacheCouchDBConnection connection = new ApacheCouchDBConnection(connectionString)) {
  ApacheCouchDBCommand cmd = new ApacheCouchDBCommand("SELECT MovieRuntime, MovieRating INTO [csv://Movies.txt] FROM [Movies] WHERE MovieRating = 'R' ", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "User=abc123; Password=abcdef;" 

Using connection As New ApacheCouchDBConnection(connectionString)
  Dim cmd As New ApacheCouchDBCommand("SELECT MovieRuntime, MovieRating INTO [csv://Movies.txt] FROM [Movies] WHERE MovieRating = 'R'", 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 = "User=abc123; Password=abcdef;";

using (ApacheCouchDBConnection connection = new ApacheCouchDBConnection(connectionString)) {
  ApacheCouchDBCommand cmd = new ApacheCouchDBCommand("SELECT * INTO [Movies] IN [csv://filename=c:/Movies.csv;delimiter=tab] FROM [Movies] WHERE MovieRating = 'R'", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "User=abc123; Password=abcdef;" 

Using connection As New ApacheCouchDBConnection(connectionString)
  Dim cmd As New ApacheCouchDBCommand("SELECT * INTO [Movies] IN [csv://filename=c:/Movies.csv;delimiter=tab] FROM [Movies] WHERE MovieRating = 'R'", connection)
  Dim rowsAffected As Integer = cmd.ExecuteNonQuery()
End Using