title: How to compare data from two tables on different servers
body: <p>I have the same copy of a database on two different servers (Azure and Google Cloud)</p>
  <p>Since they're specular I guess the countrows should be the same but it's not.
  I would like to do query to find which ids are on one database that aren't in the other.</p>
  <p>I have really no idea from where to start</p>
  <p>Can anyone help me?
  Thank you</p>