合并单表中某两行具有相同内容的数据

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(
select aaa.p1,bbb.p2,aaa.p3,aaa.p4,aaa.p5
  from (select ROW_NUMBER() OVER(ORDER BY ppp.p3) as RowNumber1,ppp.*
          from test ppp
         where ppp.p2 is null) aaa,(select ROW_NUMBER() OVER(ORDER BY qqq.p3) as RowNumber1,qqq.*
          from test qqq
         where qqq.p1 is null) bbb
 where
  (aaa.p3 = bbb.p3 and aaa.p4 = bbb.p4)
 ) 
union all
( 
      select * from test where (p3,p4) not in (select p3,p4 from test group by p3,p4 having count(*)>1)
) 

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