title: linq2db update cannot find definition for .Set method MySQL
body: <p>I am implementing linq2db in my project, currently I am trying to carry out an update but I am stuck on this issue. Now I can see there is no extension method in the class available, however in the demo on github and in the source I can't seem to find anything different from what I am doing. So not sure how to do this.</p>
  
  <p>error:
  <a href="https://i.stack.imgur.com/nIaez.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nIaez.png" alt="Error"></a></p>
  
  <p>Table:
  <a href="https://i.stack.imgur.com/JF5Sz.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JF5Sz.png" alt="Table"></a></p>