title: Failed to enable constraints?
body: <p>ERROR: <strong>Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.</strong></p>
  
  <p>Any one a solution for this problem? 
  I try to merge a view into a dataSet.
  Here is my view and it's result.</p>
  
  <p><a href="http://img688.imageshack.us/img688/5475/screendrh.png" rel="nofollow noreferrer">IMAGE LINK</a></p>
  
  <p><img src="https://i.stack.imgur.com/4hv6z.png" alt="enter image description here"></p>