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SQL1:
SELECT HOS.HOSPITAL_NAME, DEP.DEPARTMENT_NAME
  from RELEASEHOSPITALINFO HOS, RELEASEDEPARTMENTINFO DEP
WHERE HOS.HOSPITAL_ID = DEP.HOSPITAL_ID
  AND HOS.HOSPITAL_ID = '00000000008'
  AND HOS.HOSPITAL_DELETE_FLAG = '0'
  AND DEP.DEPARTMENT_DELETE_FLAG = '0'

SQL2:
SELECT HOS.HOSPITAL_NAME, DEP.DEPARTMENT_NAME
  from RELEASEHOSPITALINFO HOS inner join RELEASEDEPARTMENTINFO DEP on HOS.HOSPITAL_ID = DEP.HOSPITAL_ID
WHERE HOS.HOSPITAL_ID = '00000000008'
  AND HOS.HOSPITAL_DELETE_FLAG = '0'
  AND DEP.DEPARTMENT_DELETE_FLAG = '0'

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