列名無效ERROR

Question

我在下面有一個簡單的查詢。但我不知道爲什麼我得到一個無效的列名錯誤的字段名稱和錯誤值在where子句。

select * From (
    select [SubscriberDataId] 
    ,Case When ISNUMERIC([SubscriberCode]) = 0 Then cast([SubscriberCode]as varchar(9)) Else '~' end as [SubscriberCode] 
    ,Case When ISDATE([Dob]) = 0 Then Cast([Dob] as Varchar(9)) Else '~' end as [Dob] 
    ,Case When ISNUMERIC([FacetsGroup]) = 0 Then cast([FacetsGroup]as varchar(9)) Else '~' end as [FacetsGroup] 
    from Facets.SubscriberData) [sd] 
    Unpivot 
    (ErrorValue for FieldName in ([SubscriberCode], 
    [Dob],[FacetsGroup])) as x 
    where x.ErrorValue <> '~' and 
      NOT EXISTS (SELECT * 
    FROM Elig.dbo.ErrorTable 
       WHERE TableName = facets.SubscriberData 
    AND FieldName IN([x].[SubscriberCode],[x].[Dob],[x].[FacetsGroup]) 
       AND ErrorValue IN([SubscriberCode],[Dob],[FacetsGroup])) 

Answer 1

嘗試

select * From 
    (select [SubscriberDataId], 
     Case When ISNUMERIC([SubscriberCode]) = 0 
      Then cast([SubscriberCode]as varchar(9)) 
      Else '~' end as [SubscriberCode], 
     Case When ISDATE([Dob]) = 0 
      Then Cast([Dob] as Varchar(9)) 
      Else '~' end as [Dob], 
     Case When ISNUMERIC([FacetsGroup]) = 0 
      Then cast([FacetsGroup]as varchar(9)) 
      Else '~' end as [FacetsGroup] 
from Facets.SubscriberData) [sd] 
Unpivot (ErrorValue for FieldName in ([SubscriberCode], [Dob],[FacetsGroup])) as x where x.ErrorValue <> '~' 
and NOT EXISTS (SELECT * FROM Elig.dbo.ErrorTable     
       WHERE TableName = facets.SubscriberData  
       AND FieldName IN('[x].[SubscriberCode]','[x].[Dob]','[x].[FacetsGroup]') 
       AND ErrorValue IN('[SubscriberCode]','[Dob]','[FacetsGroup]'))