title: Update with psycopg2
body: <p>I have a problem with my code. When I connect to the database and want to execute a PSQL code line I get an error that says:</p>
  
  <pre><code>psycopg2.ProgrammingError: column "ew444" does not exist
  LINE 1: UPDATE produkt_info SET antal = 4 WHERE modellnr = EW444
  </code></pre>
  
  <p>... even though I have "ew444" in my table</p>
  
  <p>I've tried with the code below but it does not work for some reason. I can't figure out what the problem is.</p>
  
  <pre><code>con1 = connect()
  con1.execute("UPDATE produkt_info SET antal = 4 WHERE modellnr = 
  EW444")
  </code></pre>
  
  <p>I appreciate your help.
  Thanks in advance.</p>