title: Excel - Where condition?
body: <p>I have two columns with data:</p>
  
  <pre><code>    A         B
  1   HELIOS    AU
  2   HELIOS
  3   HELIOS    AU
  4   SPARTA
  5   HELIOS    AU
  
  Countif(A..;"HELIOS") AND Countif(B..;"AU")
  </code></pre>
  
  <p>I can count the amount of HELIOS or SPARTA in a column. But how can I count the amount of AU per HELIOS or SPARTA?</p>