Question

我有像这样的选择

的查询更新

update a 
set a.DocRefNumber = b.code + '-' + rtrim(ltrim(ROW_NUMBER() OVER(ORDER BY a.transid DESC)))  
from tblCollateralTransaction a
inner join tblMappingDocumentType b
on b.DocumentDetail = a.documents

当我运行此查询时，我收到如下错误：

Msg 4108，Level 15，State 1，Line 2
窗口函数只能出现在SELECT或ORDER BY子句中。

任何人都可以帮助我吗？

Answer 1

不是tesetd，但你可以尝试这样。

With UpdateData As
(
select rtrim(ltrim(ROW_NUMBER() OVER(ORDER BY a.transid DESC)))  as RN
from tblCollateralTransaction a
)    
Update a
set a.DocRefNumber = b.code + '-' + RN
From tblCollateralTransaction a
inner join tblMappingDocumentType b
on b.DocumentDetail = a.documents

当我使用row_number（）时选择不运行更新

1 个答案: