oracle 当查询结果有重复记录时 选择时间最近的一条

select

dd.receive_person,

dd.borrow_date,

dd.return_date,

dd.check_status,

da.reason,

dd.pk,

rb.resource_name,

rb.resource_brand,

da.pk dapk,

ws.bar_code

from rm_device_detail dd

left join rm_warehousing_stock ws

on dd.warehousing_stock_pk = ws.pk

left join rm_device_apply da

on dd.device_apply_pk = da.pk

left join rm_warehousing_documents wd

on wd.pk = ws.warehousing_documents_pk

left join rm_base rb

on wd.base_pk = rb.pk

where dd.borrow_status = '8'

and dd.check_status != 'A'

and dd.return_date is not null

and not exists(select 1 from rm_device_detail sub where dd.warehousing_stock_pk=sub.warehousing_stock_pk

and <![CDATA[dd.return_date < sub.return_date]]> )

order by dd.return_date desc