title: Count based on row entries?
body: <p>What I have:</p>
  
  <ul>
  <li>A table with distinct professor's name, quarter, and year values.</li>
  <li>A table with the professor's name, quarter, year, and a student's grade.</li>
  </ul>
  
  <p>What I need to do is get the count of each type of grade (e.g. A, B, C) without regard to the + or - signs.</p>
  
  <p>Does anyone know how I would accomplish this?</p>