title: SQL TRIGGERS compilation errors
body: <p>What am I doing wrong here?
  I keep getting warning messages with my triggers</p>
  
  <pre><code>CREATE TRIGGER DateFinDebut AFTER INSERT OR UPDATE OF dateFin ON SessionUQAM
  FOR EACH ROW
  BEGIN
      dateFin = DATEADD(day,90,dateDebut);
  END;
  /
  
  Warning: Trigger created with compilation errors.
  </code></pre>