title: "Only SELECT queries allowed" error
body: <p>I'm learning sql. I took few courses, so I'm starting to train with real database in real situation. I'm using Supermetrics to query a wordpress mysql database. I wrote the following request :</p>
  
  <pre><code>Select wp_users.user_nicename,
  wp_users.display_name,wp_10_posts.post_title,wp_10_posts.post_author,wp_10_posts.post_date
  from wp_10_posts
  Inner join wp_users
  on wp_10_posts.post_author=wp_users.ID
  ORDER BY wp_10_posts.post_date DESC;
  limit 150
  </code></pre>
  
  <p>And I have the following error : <code>"Only SELECT queries allowed"</code> </p>