select distinct tp.* from kat_task_property tp inner join kat_task_to_workstream ttw on ttw.ttw_frn_task_id = tp.tp_frn_task_id and ttw.ttw_frn_workstream_id= :workStreamId and ttw.ttw_ended_by is null and tp.tp_ended_by is null and tp.tp_is_active=true and ttw.ttw_is_active=true left join kat_user_to_task_order kto on ttw.ttw_id = kto.uto_frn_task_to_workstream_id and kto.uto_frn_user_id = :userId order by tp.tp_completed_at ,kto.uto_order limit :index, :size

tp_id      tp_completed_at
 1          2017-02-27 06:47:52
 2          null
 3          null
 4           2017-03-14 12:59:24
 5          null
 6          null
 7          null