SQL Server案例陈述

Question

我有一个问题，我不能弄明白，它应该是非常快，但我还没有看到任何像它一样。因此，这里是我的主要问题，我有一个定义了基于一个经理团队，所以它看起来像一个case语句：

"team" = case 
    when manager = 'manager1' then 'team1' 
    ... 
    when manager = 'managerN' then 'teamN' 
    else 'Other' 
end 

然后我想找到一种方法，使一个新的栏目“凸出”，使其除非项目团队是“其他”，所以我想它看起来像：

"proj" = case 
    when team = 'Other' then 'Other' 
    else project 
end 

，但我不断收到错误的语法不正确或它说，球队是不是一个有效的列。有任何想法吗？

Answer 1

Use Northwind 
GO 



select 

[Hemisphere] = case 
    when derived1.Continent = 'Europe' then 'Eastern' 
    when derived1.Continent = 'North America' then 'Western' 
    when derived1.Continent = 'South America' then 'Western' 
    else 'Other Hemisphere' 
end 
, derived1.Continent 
, derived1.Country 
from (

select c.Country , 
[Continent] = case 
    when c.Country = 'Germany' then 'Europe' 
    when c.Country = 'France' then 'Europe' 
    when c.Country = 'Sweden' then 'Europe' 
    when c.Country = 'Denmark' then 'Europe' 
    when c.Country = 'Finland' then 'Europe' 
    when c.Country = 'Switzerland' then 'Europe' 
    when c.Country = 'Poland' then 'Europe' 
    when c.Country = 'Norway' then 'Europe' 
    when c.Country = 'Ireland' then 'Europe' 
    when c.Country = 'Austria' then 'Europe' 
    when c.Country = 'Italy' then 'Europe' 
    when c.Country = 'Portugal' then 'Europe' 
    when c.Country = 'Belgium' then 'Europe' 
    when c.Country = 'Spain' then 'Europe' 
    when c.Country = 'UK' then 'Europe' 
    when c.Country = 'Spain' then 'Europe' 
    when c.Country = 'Mexico' then 'North America' 
    when c.Country = 'USA' then 'North America' 
    when c.Country = 'Canada' then 'North America' 
    when c.Country = 'Brazil' then 'South America' 
    when c.Country = 'Argentina' then 'South America' 
    when c.Country = 'Venezuela' then 'South America' 
    else 'Other Continent' 
end 

from [dbo].[Customers] c 
) as derived1