title: SQL question: How to get a list of cities?
body: <p>Pretend there is a database with every city in the world and a unique ID to go with each one. I have a list of 50 IDs in one column of an excel document. </p>
  
  <p>How do I return the names of the 50 cities most efficiently? Do I really need to do a WHERE clause with ID# OR ID# ....etc?</p>