title: Possible to automatically create a timestamp record on insert with Postgres?
body: <p>I've just created a Postgres database and table ('users'). My table has a <code>created_at</code> column of type:</p>
  
  <pre><code>TIMESTAMP WITH TIME ZONE NOT NULL;
  </code></pre>
  
  <p>I basically want to use this column to keep track of when a new user is created. Is there a way to have Postgres automatically update this with each insert or do I have to supply it a value for this on every insert?</p>
  
  <p>(I want to say when using it before with <a href="http://docs.sequelizejs.com/en/latest/" rel="noreferrer">Sequelize</a>, it created this automatically - so wondering if this was done through Sequelize as a default when inserting). </p>
  
  <p>Thank you!</p>