title: Postgresql: How to grant permission for set role?
body: <p>There is user 'test_user1'. SET ROLE Command:</p>
  
  <pre><code>SET ROLE test_user1
  </code></pre>
  
  <p>returns error:</p>
  
  <pre><code>ERROR:  permission denied to set role "test_user2"
  </code></pre>
  
  <p>I couldn't find how to grant permission for SET ROLE.</p>
  
  <p>Thanks in advance.</p>