級聯SQL

 select distinct jx01nd.zymc,zymc from jx01nd where xx0301id = '06'  ---院系

 select xs0701id, rxnf
   from (select row_number() over(partition by rxnf order by rxnf desc) rn,
                xs0701id,
                rxnf,
                yxsh
           from xs0701) tmp
  where rn = 1
 ---入學年份
 
 
 select * from jx01nd
 
 select jx01ndid, zymc
   from (select row_number() over(partition by jx01nd.zymc order by jx01nd.zymc desc) rn,
                jx01nd.jx01ndid,
                jx01nd.zymc,
                jx01nd.xx0301id
           from jx01nd) tmp
  where rn = 1
    and xx0301id = '06'    ----專業
   
select XX04ID, Bj
   from (select row_number() over(partition by XX04.Bj order by XX04.Bj desc) rn,
                XX04.XX04ID,
                XX04.Bj,
                XX04.Jx01ndid,
                XX04.Xx0301id,
                XX04.Rxnf
           from XX04) tmp
  where rn = 1
    and xx0301id = '06'
    and rxnf = '2006'
    and jx01ndid = 'HRrudNIQO58bNYb9M3LZNvrVEMmmeg59'
   
 ----班級