SELECT error_id, Max(( ( BODY ->> 'trace' ) :: jsonb ->> 'exception' ) :: jsonb ->> 'class') AS EXCEPTION, Max(( ( BODY ->> 'message' ) :: jsonb ->> 'body' )) AS message, Count(*), Max(timestamp) AS last_seen FROM   errors GROUP  BY error_id ORDER  BY last_seen DESC;

create view error_report as 
select 
  error_id, 
  max(
    concat(
      coalesce(
        (
          (body ->> 'trace'):: jsonb ->> 'exception'
        ):: jsonb ->> 'class', 
        'Error'
      ), 
      ': ', 
      (
        (body ->> 'trace'):: jsonb ->> 'exception'
      ):: jsonb ->> 'message', 
      (body ->> 'message'):: jsonb ->> 'body'
    )
  ) as error, 
  count(*) as occurences, 
  max(timestamp) as last_seen, 
  max(
    array_to_string(
      array(
        select 
          concat(
            el ->> 'filename', ':', el ->> 'lineno'
          ) 
        from 
          jsonb_array_elements(
            (
              (body ->> 'trace'):: jsonb ->> 'frames'
            ):: jsonb
          ) as el 
        limit 
          4
      ), 
      ', '
    )
  ) as trace, 
  max(environment) as environment, 
  max(custom ->> 'revision') as revision 
from 
  errors 
group by 
  error_id 
order by 
  last_seen desc;