title: I have an error doing a select in SQLITE
body: <p>I'm trying to do this at <code>onUpgrade()</code> in my Android Java App:</p>
  
  <pre><code>try {
      db.execSQL("SELECT fechacontrol from parametres", null);
  } catch(Exception e) {
      e.printStackTrace();
      db.execSQL("ALTER TABLE parametres ADD COLUMN fechacontrol BIGINT");
  }
  </code></pre>
  
  <p>My problem is, the column <code>fechacontrol</code> exists, but I always end up in the exception block, then the app crashes because of a duplicated column name.
  What am I doing wrong?</p>
  
  <p>Thanks you all. </p>