SQL Server : trouble with ROW_NUMBER OVER PARTITION BY -

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i having trouble in calculating maximum of row_number in sql statement.

i query search originaldocumentnumber data not same query http://i.stack.imgur.com/xwvn9.png

select      originaldocumentnumber, filterround, p2_reason, rowno, p2_finalgrade      (select  * ,row_number() on (partition originaldocumentnumber,filterround order p2_finalgrade desc) rowno                  #tempda              ) l                     l.p2_finalgrade in ('d','f')            , l.rowno = 1          , l.originaldocumentnumber='590200054'          , l.originaldocumentnumber+l.filterround not in (select originaldocumentnumber+filterround #tempda p2_finalgrade in ('a','b','c'))

query 2 output image query 2

 select originaldocumentnumber ,filterround ,  p2_reason , rowno , p2_finalgrade             (                     select * ,row_number() on (partition originaldocumentnumber,filterround order p2_finalgrade desc) rowno                      #tempda                  ) l                             l.p2_finalgrade in ('d','f')                , l.rowno = 1              -- , l.originaldocumentnumber='590200054'              , l.originaldocumentnumber+l.filterround not in (select originaldocumentnumber+filterround #tempda p2_finalgrade in ('a','b','c'))


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