select * from sys_bs_area_info t where exists
(select * from sys_bs_area_info t1,sys_bs_area_info t2 where t1.bain_id = t2.bain_parent_id and t1.bain_id=t.bain_id )
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select * from sys_bs_area_info t where exists
转载于:https://blog.51cto.com/2520378/1158642