多案例标准

Question

我试图获得一个输出，当没有空值时，例如'Private' 列中的 '1,2,and3' 'Name' 列返回 'Name Suppressed'

我知道以下查询有效：

case when AM.Private is null then Name1 else 'Name Suppressed' end as Name1, Private
from AM

但我现在有多个列的名称需要隐藏。

我试过了：

select case when AM.Private is null then Name1 or Name2 else 'Name Suppressed' end as Name1, Name2, Private
from AM

和

select case when AM.Private is null then Name 1 then case when AM.Private is null then Name 2 else 'Name Suppressed' end as Name1, Name2, Private
from AM

有谁知道我做错了什么？

Answer 1

如果我理解正确，您需要两个 case 表达式：

(Case when AM.Private IS NULL then Name1 Else 'Name Suppressed' END) AS Name1,
(Case when AM.Private IS NULL then Name2 Else 'Name Suppressed' END) AS Name2,
Private From AM