title: PostgreSQL - Empty table
body: <p>I have a table called EVENTS on my PostgreSQL DB schema.<br>
  It is empty, i.e. when I execute</p>
  
  <pre><code>SELECT * FROM EVENTS
  </code></pre>
  
  <p>I get an empty results set.</p>
  
  <p>Nonetheless, the table occupies 5MB of disk space.<br>
  I'm executing  </p>
  
  <pre><code>SELECT round(pg_total_relation_size('events') / 1024.0 / 1024.0, 2)
  </code></pre>
  
  <p>And I'm getting 5.13MB.</p>
  
  <p>I tried to explicitly run VACUUM, but it didn't change anything.</p>
  
  <p>Any ideas?</p>