Employee Income Query

SELECT ppeo.EMPLOYEE_NUMBER,
  ppeo.FULL_NAME NAME,
  ety.ELEMENT_NAME,
  PACT.EFFECTIVE_DATE,
  NVL (TO_NUMBER (RRV.RESULT_VALUE), 0)
FROM pay_run_results rrs,
  pay_run_result_values rrv,
  pay_element_types_f ety,
  pay_element_classifications cla,
  pay_assignment_actions asact,
  pay_payroll_actions pact,
  per_all_assignments_f assm,
  per_all_people_f ppeo,
  pay_input_values_f inv
WHERE rrs.RUN_RESULT_ID = rrv.RUN_RESULT_ID
AND rrs.ELEMENT_TYPE_ID =ety.ELEMENT_TYPE_ID
  -- AND rrv.RESULT_VALUE NOT IN ('0')
  -- and  ety.ELEMENT_NAME like '%Abse%'
  -- AND cla.CLASSIFICATION_NAME IN ('Earnings')
AND ety.CLASSIFICATION_ID              =cla.CLASSIFICATION_ID
AND rrs.ASSIGNMENT_ACTION_ID           =asact.ASSIGNMENT_ACTION_ID
AND TO_NUMBER (pact.PAYROLL_ACTION_ID) = TO_NUMBER (asact.PAYROLL_ACTION_ID)
AND asact.ASSIGNMENT_ID                = assm.ASSIGNMENT_ID
AND assm.EFFECTIVE_END_DATE            > SYSDATE
AND assm.PERSON_ID                     = ppeo.PERSON_ID
AND ppeo.EFFECTIVE_END_DATE            > SYSDATE
AND inv.EFFECTIVE_END_DATE             > SYSDATE
AND RRV.INPUT_VALUE_ID                 = INV.INPUT_VALUE_ID
AND PACT.EFFECTIVE_DATE BETWEEN sysdate AND sysdate-30
AND inv.name LIKE'%%'