title: #1062 - Duplicate entry for key 'PRIMARY'
body: <p>i need to merge two databases 
  with this</p>
  
  <pre><code>INSERT INTO DB1.TABLES SELECT * FROM DB2.TABLES
  </code></pre>
  
  <p>but i recierved this error</p>
  
  <pre><code> #1062 - Duplicate entry '90' for key 'PRIMARY'  
  </code></pre>