activiti 根据业务查询代办工单

SELECT
 oa.*,
 t.ID_ taskId 
FROM
 xxx oa
 INNER JOIN act_ru_execution e ON oa.complaint_id = e.BUSINESS_KEY_
 INNER JOIN act_re_procdef p ON e.PROC_DEF_ID_ = p.ID_
 INNER JOIN act_ru_task t ON t.PROC_INST_ID_ = e.PROC_INST_ID_
 INNER JOIN act_ru_identitylink i ON I.TASK_ID_ = t.ID_ 
WHERE
 e.PARENT_ID_ IS NULL 
 AND e.BUSINESS_KEY_ IS NOT NULL 
 AND t.TENANT_ID_ = '1' 
 AND (
  t.ASSIGNEE_ = 'admin' 
  OR (
   t.ASSIGNEE_ IS NULL 
  AND I.TYPE_ = 'candidate' 
 AND ( I.USER_ID_ = 'admin' )))