如何解決這個子查詢錯誤？

Question

你能告訴我這個怎麼了？ 它拋出錯誤

子查詢返回的值超過1。當子查詢遵循=，！=，<，< =，>，> =或當子查詢用作表達式時，這是不允許的。

什麼意思使用({?SUB_ALLOC_PARM}))我猜它的參數值正確嗎？

select distinct LFS_LFS as DN 
     , LFS_VONNR 
     , LZL_REFNR 
     , AGR_TEXT 
     , LFS_KNR as Store 
     , LFS_DATOK 
     , FIL_INDEX as Store_name 
     , LAN_TEXT as COUNTRY 
     , LZL_MENGE as Qty 
     , ANS_NAME1 AS 'Customer Name' 
     , ANS_NAME2 AS 'Customer Address line 1' 
     , ANS_STRASSE AS 'Customer Address line 2' 
     , ANS_STRASSE_2 AS 'Customer Address line 3' 
     , ANS_ORT AS 'City' 
     , ANS_TITEL AS 'State' 
     , LAN_TEXT AS 'Country' 
     , ANS_PLZ AS 'PostCode' 
     , (select FIL_NUMMER 
      from FUTURA..V_FILIALEN as HO 
      where HO.FIL_LAND = STORE.FIL_LAND 
        and HO.FIL_MANDANT = 1 
        and HO.FIL_ART = 0 
     ) as HO_BRANCH 
from FUTURA..V_LIEFHEAD, 
     FUTURA..V_ARTIKEL, 
     FUTURA..V_ART_KOPF, 
     FUTURA..V_LIEFZEIL, 
     FUTURA..V_LAGER as BR5, 
     FUTURA..V_FILIALEN as STORE, 
     FUTURA..V_ANSCHRIF, 
     FUTURA..V_LAND 
where AGR_MANDANT = ART_MANDANT 
     and AGR_WARENGR = ART_WARENGR 
     and AGR_ABTEILUNG = ART_ABTEILUNG 
     and AGR_TYPE = ART_TYPE 
     and AGR_GRPNUMMER = ART_GRPNUMMER 
     and LZL_REFNR = ART_REFNUMMER 
     and ART_MANDANT = LFS_MANDANT 
     and LFS_LFS = LZL_LFS and LFS_MANDANT = LZL_MANDANT 
     and LFS_MANDANT = 1 
     and LZL_REFNR <> 0 
     and LZL_REFNR = BR5.LAG_REFNUMMER 
     and LZL_MANDANT = BR5.LAG_MANDANT 
     and BR5.LAG_MANDANT = 1 
     and BR5.LAG_FILIALE = LFS_VONNR 
     and FIL_MANDANT = LZL_MANDANT 
     and FIL_NUMMER = LFS_KNR 
     and LAN_MANDANT = FIL_MANDANT 
     and LAN_NUMMER = FIL_LAND 
     AND ANS_TYP = 2 -- branches 
     AND ANS_COUNT = 1 -- sequence 1 
     AND ANS_MANDANT = FIL_MANDANT 
     AND ANS_NUMMER = FIL_NUMMER 
     and LFS_LFS IN (
      select distinct PVG_LIEFERSCHEIN 
      from FUTURA..V_PVERFIL 
      where PVG_NUMMER IN ({?SUB_ALLOC_PARM}) 
     ) 
order by 
     LFS_KNR 

Answer 1

最有可能的，你

  select FIL_NUMMER 
      from FUTURA..V_FILIALEN as HO 
      where HO.FIL_LAND = STORE.FIL_LAND 
        and HO.FIL_MANDANT = 1 
        and HO.FIL_ART = 0 

子句返回多個值。