title: Arguments of Column in SqlAlchemy Flask
body: <p>I'm looking for docs of the <code>Column</code> definition, I want to know how many args the function <code>Column</code> has.</p>
  <p><a href="https://pythonhosted.org/Flask-SQLAlchemy/models.html#simple-example" rel="nofollow noreferrer">https://pythonhosted.org/Flask-SQLAlchemy/models.html#simple-example</a></p>
  <p><a href="http://flask-sqlalchemy.pocoo.org/2.0/api/#sessions" rel="nofollow noreferrer">http://flask-sqlalchemy.pocoo.org/2.0/api/#sessions</a></p>
  <p>Sample Code:</p>
  <pre><code>class User(db.Model):
      username = db.Column(db.String(80), unique=True)
      pw_hash = db.Column(db.String(80))
  </code></pre>
  <p>And I have found nothing.</p>