Subquery Problem

[mipo1984]

I have subquery into a principal query, and i need the subquery return me only the last row of all results, but i can`t use "order by <field> desc " in the subquery because this return me an error, nither "fetch first 1 rows only" because this return a error too. Any sugestion?


this es the SQL...

SELECT
  C.NOMBRE,V.COBJCOD,CS.DESC,V.CSUBCOD,
  N.NOMBRE,CS.NIVEL,V.SUBLIBRO,
  V.TSUBLIBRO,CS.CAT5COD,CAT7COD,
  A.CODIGO,V.ANIO,M.codigo,V.MES,
  sum(V.saldod),acumulado
FROM
  QS36F.FIN0002M V
Inner Join
  QS36F.V570010 S
on
  (S.codigo=V.SUCCOD)
Inner Join
  QS36F.V57CIA E
on
  (S.CODEMP=E.codigo)
Inner Join
  QS36F.V570909 C
on
  (C.cuenta=V.COBJCOD)
Inner Join
  QS36F.V570901 CS
on
  (CS.UNEGCOD=V.UNEGCOD
  and
  CS.CSUBCOD=V.CSUBCOD
  and
  CS.COBJCOD=V.COBJCOD)
Inner Join
  QS36F.NIVEL N
on
  (CS.nivel=N.codigo)
Inner Join
  QS36F.ANIO A
on
  (A.codigo=V.anio)
Inner Join
  QS36F.MES M
on
  (M.codigo=V.mes) 

WHERE 

  acumulado IN 
 (
  ///SUBQUERY
  select
    acumulado
  from
    QS36F.FIN0002M 
  // order by acumulado desc ( <--  this return a error)
  ) 
AND
  (E.codigo='E01')
AND
  (A.codigo='2007' OR A.codigo='2006')

GROUP BY
  C.nombre,V.COBJCOD,CS.DESC,
  V.CSUBCOD,N.nombre,CS.nivel,
  V.sublibro,V.TSUBLIBRO,CS.cat5cod,
  CS.cat7cod,A.codigo,V.anio,
  M.codigo,V.mes
ORDER BY
  C.nombre,V.COBJCOD,CS.DESC,
  V.CSUBCOD,N.nombre,CS.nivel, V.sublibro,
  V.TSUBLIBRO,CS.cat5cod,CS.cat7cod,
  A.codigo,V.anio,M.codigo,V.mes,acumulado

FETCH FIRST 80 ROWS ONLY

[docdiesel]

Hi,

first, I took the liberty to add some code tags to your post for better readability.

Second, if you sort descending by 'acumulado' and just need the first row, then why don't you use

SELECT
  max(acumulado)
FROM
  QS36F.FIN0002M

If that doesn't fit your needs, then you could create a view based on your subquery and uses that view in the conditions of your big query.

Saludos,

Bernd