ORDER BY 子句在视图、内联函数、派生表、子查询和公用表表达式中无效，除非 TOP、OFFSET 或 FOR XML [关闭]

Question

我有一个查询，我想通过 CreatationDateTime 表单 requestFolders 订购 但是我得到了这个错误。

ORDER BY 子句在视图、内联函数、派生表、子查询和公用表表达式中无效，除非还指定了 TOP、OFFSET 或 FOR XML。

我的查询是：

with requests as    (
select IRF.Id as Id,
    P.Id as ProcessId,
    N'Investment' as [ServiceType],
    IRF.FolderNumber as FolderNumber,
    P.[Name] as [TypeTitle],
    S.CustomerDisplayInfo_CustomerTitle as [CurrentStatus],
    S.CustomerDisplayInfo_CustomerOrder as [CurrentStatusOrder],
    RH.OccuredDateTime as [CurrentStatusDate],
    IRF.CreationDateTime as [RequestDate],
    IRF.RequestedAmount as [Amount],
    (case when A.Id is not Null and s.sidetype='CustomerSide' then 1 else 0 end)  as [HasAction],
    rank() over ( partition by IRF.Id order by rh.OccuredDateTime desc) as rnk
from
    [Investment].[dbo].[InvestmentRequestFolders] as IRF inner join
    [Investment].[dbo].[RequestHistories] as RH on IRF.Id = RH.ObjectId inner join
    [Investment].[dbo].[Processes] as P on P.Id = RH.ProcessId inner join
    [Investment].[dbo].[Step] as S on S.Id = RH.ToStep left join
    [Investment].[dbo].[Actions] as A on A.StepId = RH.ToStep

where IRF.Applicant_ApplicantId = '89669CD7-9914-4B3D-AFEA-61E3021EEC30'

-- the error is here
order by IRF.CreationDateTime

) SELECT t.Id,
    max(t.ProcessId) as [ProcessId],
    t.[ServiceType] as [ServiceType],
    isnull(max(t.TypeTitle), '-') as [TypeTitle],
    isnull(max(t.FolderNumber), '-') as [RequestNumber],
    isnull(max(t.CurrentStatus), '-') as [CurrentStatus],
    isnull(max(t.CurrentStatusOrder), '-') as [CurrentStatusOrder],
    max(t.CurrentStatusDate)as [CurrentStatusDate],
    max(t.RequestDate) as [RequestDate],
    max(t.HasAction) as [HasAction],
    isnull(max(t.Amount), 0) as [Amount]
FROM requests as t

where t.rnk = 1

GROUP BY t.Id

错误出现在 Msg 1033, Level 15, State 1, Line 24

请帮帮我。

Answer 1

在几乎所有情况下，您都可以简单地删除 CTE 的 ORDER BY 子句。即使它在语法上是允许的（它在其他 RDBMS 中），它也不会影响您编写查询的结果。

现在，如果出于某种原因，您绝对必须保留它，您可以添加一个 TOP 子句，例如一个没有任何效果的如TOP 100 PERCENT，即：

with requests as    (
  select top 100 percent
    IRF.Id as Id,
    ...

一个完整的简化示例：

-- Doesn't work
with t (a) as (
  select a
  from (values (1),(3),(2)) t (a)
  order by a
)
select a from t order by a

-- Works
with t (a) as (
  select top 100 percent a
  from (values (1),(3),(2)) t (a)
  order by a
)
select a from t order by a