title: How to query for records created X days ago given an array of days?
body: <p>I'm looking to build a query that selects all records from a table that were created_at X days ago in a given array.</p>
  
  <p>So, given [3, 8, 13, 21, 34, 50];</p>
  
  <p>How can I find all records with MySQL that were created_at in 3, 8, 13, 21, 34, 50 days_ago?</p>
  
  <p>Can MySQL figure out what 3 days ago was or do I need to pass in that specific date?</p>