title: SQL base types: integer vs int?
body: <p>For <a href="http://www.postgresql.org/docs/9.3/static/xfunc-sql.html" rel="noreferrer">query language (SQL) functions</a>, what's the difference between the <code>int</code> and <code>integer</code> <a href="http://www.postgresql.org/docs/9.2/static/extend-type-system.html#AEN51720" rel="noreferrer">base types</a>?</p>
  
  <p>How do you know?</p>