title: How to select rows where that record has multiple entries?
body: <p>My database has a cost table for items. Items can have more than one cost record. </p>
  
  <p>I want to grab only the items that have multiple cost records. </p>
  
  <p>The UPC field is F01, and the table is called COST_TAB. I only want to grab items where there are multiple entries based on the F01 field. </p>
  
  <p>I'm struggling with how to write this query. </p>