title: Can not set/change the primary key in phpMyAdmin 4.1.12. table
body: <p>I can not set/change the primary key for my db table in phpMyAdmin.
   So far I have tried with a SQL query CREATE, via graphica user interface, manual but nothing  works.</p>
  
  <p>Q1: Which is the primary key in the picture?</p>
  
  <p>Q2: How do I change the PK? graphically it doesnt work.
  <img src="https://i.stack.imgur.com/2jLIo.png" alt="enter image description here"></p>