title: ERROR: must be member of role "" PostgreSQL
body: <p><br>
  I need to change owner of table.<br>
  I created table:<br></p>
  
  <pre><code>CREATE TABLE example (some columns);
  </code></pre>
  
  <p>Then I tried to change owner:</p>
  
  <pre><code>ALTER TABLE database.expample OWNER TO "secondary";
  </code></pre>
  
  <p>and them I got this error:</p>
  
  <pre><code>ERROR: must be member of role "secondary"
  </code></pre>
  
  <p>Can anybody help me?<br>
  Thanks in advance.</p>