title: Insert data into specific table (sqlalchemy)
body: <p>It's pretty easy to insert data into a database by using sqlalchemy. </p>
  
  <pre><code>address.name = 'Joe'
  address.age = 26
  session.add(address)
  </code></pre>
  
  <p>But actually I have three tables - how can I specify the table I want to insert my data in?</p>