T-SQL：訪問公共表表達式中的臨時列

Question

是否可以訪問在公共表表達式的查詢中定義的臨時列？說我有

select * from myTable 

;with cte as 
(
    select 
     *, Salary * 4 as FourTimesSalary 
    from 
     Employees 
    where 
     Name = @name 
     and ID >= 100 
) 

有沒有像這樣CTE查詢時使用的臨時列FourTimesSalary的方法嗎？

select top 2 * 
from cte 
order by FourTimesSalary, Name 

TIA。

Answer 1

是的，你可以做到這一點。例如：

with temp as 
(
    select 1 as id, 2*4 as val 
    UNION 
    select 2 as id, 3*4 as val 
) 
SELECT * FROM temp ORDER BY VAL desc 

你的榜樣看起來不錯，沒當你嘗試過什麼，你得到一個錯誤？