title: Resolving a duplicate primary key on mysql import
body: <p>I'm looking to append a comments table from one WordPress site to another. The users are different. When I import the comments from site B to A, I run into a duplicate key issue; comment_id is already taken.</p>
  
  <p>So how can I resolve this and append the table with a simple .sql file? Would I have to take the user information, generate a new user, check for comments made on site B, pull the content and postID, then go back to site A and recreate the comment for the newly created user!?</p>
  
  <p>What a headache! THanks.</p>