text: select  
      count(index)  
  from 
      public.course_tags
  where 
      course_id = '2d-racing-games-unity-volume-2-1286';
  
  select
      user_assessment_score as score
  from 
      public.user_assessment_scores
  where 
      user_handle = 7487 
      and assessment_tag = 'angular-js';
  
  select  
      user_handle
  from 
      public.user_course_views
  where
      view_date = '2017-06-27'
      and author_handle = 875;
  
  select
      user_handle
  from 
      public.user_interests
  where 
      interest_tag = 'devops' 
      and date_followed = '2017-11-06 16:55:35'
  