向數據透視SQL查詢中的字段名稱添加別名

Question

我有一個查詢下面，並需要有字段[Cmp-Goal-RF-148]（這是pivoted成一列） - 我需要的列標題除[Cmp-Goal-RF-148]之外，所以我想我需要以別名。這樣做會拋出一個錯誤：([Cmp-Goal-RF-148] AS 'Ghost')。我錯過了什麼？

select * 
from 
(
    select EmpRvwPdDtl.Emp, EmpRvwPdDtl.Rvwr, 
    EmpRvwPdDtl.RvwItm, 
    CAST(EmpRvwPdDtl.RvwItmCom as VARCHAR(MAX)) as comment 
    from EmpRvwPdDtl 
    inner join EmpRvwPd 
    on (EmpRvwPd.Emp=EmpRvwPdDtl.Emp) 
    where EmpRvwPdDtl.RvwItmCom is not null 
    AND EmpRvwPd.Sup='RM04' 
) as s 
PIVOT 
(
    MAX(comment) for RvwItm in ([Cmp-Goal-RF-148]) 
) as pvit 

Answer 1

您將添加別名在最後的SELECT列表：

select Emp, Rvwr, 
    [Cmp-Goal-RF-148] as Ghost -- alias goes here 
from 
(
    select EmpRvwPdDtl.Emp, EmpRvwPdDtl.Rvwr, 
    EmpRvwPdDtl.RvwItm, 
    CAST(EmpRvwPdDtl.RvwItmCom as VARCHAR(MAX)) as comment 
    from EmpRvwPdDtl 
    inner join EmpRvwPd 
    on (EmpRvwPd.Emp=EmpRvwPdDtl.Emp) 
    where EmpRvwPdDtl.RvwItmCom is not null 
    AND EmpRvwPd.Sup='RM04' 
) as s 
PIVOT 
(
    MAX(comment) for RvwItm in ([Cmp-Goal-RF-148]) 
) as pvit