Group by

I love this plugin. Thanks.
Simple question I hope:
How do I group two rows in my database that looks like this:

Name Value1 Value2 (Headers)
User1 100
User1               200

I would like the shortcode to output this:

Name Value1 Value2 Difference (Headers)
user1 100       200       100

Is this possible with this wonderfull plugin?
If so, could you please list the shortcode?

Regards Jens

https://wordpress.org/plugins/contact-form-7-to-database-extension/