Question

SQL错误：多部分标识符“s.OrderType”不可能界。

from Table1 as c
inner join Table2 as s on c.RequestID = s.ReqID
inner join dbo.fn_getValues(s.OrderType) as gcd on c.ReqID = gcd.ReqID

Answer 1

您需要使用cross apply代替inner join，并将on子句移至where：

from        Table1 as c
inner join  Table2 as s 
         on c.RequestID = s.ReqID
cross apply dbo.fn_getValues(s.OrderType) as gcd 
where       c.ReqID = gcd.ReqID

问题是对于连接，表表达式（join后面的位）必须是不可更改的。如果加入表值函数，则不是这样：表表达式取决于另一个表中的值。这就是为什么我们有cross apply。

是否可以使用先前加入的参数？

1 个答案: