{10} Active Tickets by color type

OperationalError: near "CASE": syntax error

SELECT COUNT(*) FROM (

(CASE type
   WHEN 'defect' THEN 1
   WHEN 'enhancement' THEN 2
   WHEN 'task' THEN 4
   WHEN 'query' THEN 5
   ELSE 3
 END) AS __color__,
   id AS ticket, summary, component, version, milestone, t.type AS type, 
   owner, status,
   time AS created,
   changetime AS _changetime, description AS _description,
   reporter AS _reporter
  FROM ticket t
  LEFT JOIN enum p ON p.name = t.priority AND p.type = 'priority'
  WHERE status <> 'closed' 
  ORDER BY t.type, milestone, p.value, time

) AS tab