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 FirstName, Id INTO [csv://Customers.txt] FROM [Customers] WHERE FirstName = 'jdoe1234'

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 FirstName, Id INTO [csv://Customers.txt;delimiter=tab] FROM [Customers] WHERE FirstName = 'jdoe1234'

C#

String connectionString = "InitiateOAuth=GETANDREFRESH;ShopUrl=https://yourshopname.myshopify.com;OAuthClientId=myoauthclientid;OAuthClientSecret=myoauthclientsecret;";

using (ShopifyConnection connection = new ShopifyConnection(connectionString)) {
  ShopifyCommand cmd = new ShopifyCommand("SELECT FirstName, Id INTO [csv://Customers.txt] FROM [Customers] WHERE FirstName = 'jdoe1234' ", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "InitiateOAuth=GETANDREFRESH;ShopUrl=https://yourshopname.myshopify.com;OAuthClientId=myoauthclientid;OAuthClientSecret=myoauthclientsecret;" 

Using connection As New ShopifyConnection(connectionString)
  Dim cmd As New ShopifyCommand("SELECT FirstName, Id INTO [csv://Customers.txt] FROM [Customers] WHERE FirstName = 'jdoe1234'", 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 = "InitiateOAuth=GETANDREFRESH;ShopUrl=https://yourshopname.myshopify.com;OAuthClientId=myoauthclientid;OAuthClientSecret=myoauthclientsecret;";

using (ShopifyConnection connection = new ShopifyConnection(connectionString)) {
  ShopifyCommand cmd = new ShopifyCommand("SELECT * INTO [Customers] IN [csv://filename=c:/Customers.csv;delimiter=tab] FROM [Customers] WHERE FirstName = 'jdoe1234'", connection);
  int rowsAffected = cmd.ExecuteNonQuery();
} 

VB.NET

Dim connectionString As [String] = "InitiateOAuth=GETANDREFRESH;ShopUrl=https://yourshopname.myshopify.com;OAuthClientId=myoauthclientid;OAuthClientSecret=myoauthclientsecret;" 

Using connection As New ShopifyConnection(connectionString)
  Dim cmd As New ShopifyCommand("SELECT * INTO [Customers] IN [csv://filename=c:/Customers.csv;delimiter=tab] FROM [Customers] WHERE FirstName = 'jdoe1234'", connection)
  Dim rowsAffected As Integer = cmd.ExecuteNonQuery()
End Using