title: Error when enabling access to postgresql data base engine via SQL cell magic
body: <pre><code>%load_ext sql
  %sql postgresql://test:test@localhost:5432/tm351test
  </code></pre>
  <p>Error message : (psycopg2.operationalError) connection to server at &quot;localhost&quot; (::1), port 5432 failed: FATAL :role &quot;test&quot; does not exist</p>
  <p>Im running jupyter notebook from anaconda</p>