title: Why use SqlAlchemy's func.lower(mystring) vs. mystring.lower()?
body: <p>Look at this answer: <a href="https://stackoverflow.com/questions/16573095/case-insensitive-flask-sqlalchemy-query">Case Insensitive Flask-SQLAlchemy Query</a></p>
  
  <p>Why is it better to use SQLAlchemy's <code>func.lower(mystring)</code> instead of python's native <code>mystring.lower()</code>?</p>