title: PL/SQL: Update row based on ROWID
body: <p>I am trying to update a row in a table which has no unique index.   So, I selected the ROWID of the row I want to update and now I want to update the row like this:</p>
  
  <pre><code>UPDATE MYTABLE SET MYCOLUMN = 0 WHERE ROWID = "AAAIWWAAFAAApwDADR"
  </code></pre>
  
  <p>MYCOLUMN is of type NUMBER(1)</p>
  
  <p>I get the error:   <code>invalid identifier [SQL State=42000, DB Errorcode=904]</code> </p>
  
  <p>Any idea why?</p>