MERGE语句产生绑定错误

Question

我试过这段代码：

 Merge fact_table as target 
using( select top 1 idDateDeb,PK_Date, Week_Of_Year from dbo.dim_date_Debut)
as source 
on cast(source.PK_Date as date)=cast(dbo.FACT_TABLE.DATE_DEBUT_ALRM as date)
when matched then update set target.ID_TEMP_DEB=source.idDateDeb;

但是我收到了这个错误：

  

Msg 4104，Level 16，State 1，Line 4   
无法绑定多部分标识符“dbo.FACT_TABLE.DATE_DEBUT_ALRM”。

我正在尝试做this question之类的事情。

Answer 1

尝试：

Merge dbo.fact_table as target 
using( select top 1 idDateDeb,PK_Date, Week_Of_Year from dbo.dim_date_Debut)
as source 
on cast(source.PK_Date as date)=cast(target.DATE_DEBUT_ALRM as date)
when matched then update set target.ID_TEMP_DEB=source.idDateDeb;

您已将（dbo.）fact_table别名为target，因此解析器可能会看到target，而不是dbo.FACT_TABLE。