select sum(hours) hours, 
      (case when ji.resolution not in (-1,1) then 'No Action' when wl.verify = 1 then 'Verify' else 'Maintenance' end) timetype
  from jiraissue ji, 
       worklog wl
 where ji.type = 11
   and ji.id = wl.issue
   and wl.startdate >= '04/02/11'
   and wl.startdate <= '07/01/2011'
   and wl.author in (select resource from resource)
group by (case when ji.resolution not in (-1,1) then 'No Action' when wl.verify = 1 then 'Verify' else 'Maintenance' end)