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 subject, location_displayName INTO [csv://Teams.txt] FROM [Teams] WHERE Id = 'Jq74mCczmFXk1tC10GB'

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 subject, location_displayName INTO [csv://Teams.txt;delimiter=tab] FROM [Teams] WHERE Id = 'Jq74mCczmFXk1tC10GB'

C#

String connectionString = "";

using (MSTeamsConnection connection = new MSTeamsConnection(connectionString)) {
  MSTeamsCommand cmd = new MSTeamsCommand("SELECT subject, location_displayName INTO [csv://Teams.txt] FROM [Teams] WHERE Id = 'Jq74mCczmFXk1tC10GB' ", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "" 

Using connection As New MSTeamsConnection(connectionString)
  Dim cmd As New MSTeamsCommand("SELECT subject, location_displayName INTO [csv://Teams.txt] FROM [Teams] WHERE Id = 'Jq74mCczmFXk1tC10GB'", 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 = "";

using (MSTeamsConnection connection = new MSTeamsConnection(connectionString)) {
  MSTeamsCommand cmd = new MSTeamsCommand("SELECT * INTO [Teams] IN [csv://filename=c:/Teams.csv;delimiter=tab] FROM [Teams] WHERE Id = 'Jq74mCczmFXk1tC10GB'", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "" 

Using connection As New MSTeamsConnection(connectionString)
  Dim cmd As New MSTeamsCommand("SELECT * INTO [Teams] IN [csv://filename=c:/Teams.csv;delimiter=tab] FROM [Teams] WHERE Id = 'Jq74mCczmFXk1tC10GB'", connection)
  Dim rowsAffected As Integer = cmd.ExecuteNonQuery()
End Using