SQL Server案例陳述

Question

我有一個問題，我不能弄明白，它應該是非常快，但我還沒有看到任何像它一樣。因此，這裏是我的主要問題，我有一個定義了基於一個經理團隊，所以它看起來像一個case語句：

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

然後我想找到一種方法，使一個新的欄目「凸出」，使其除非項目團隊是「其他」，所以我想它看起來像：

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

，但我不斷收到錯誤的語法不正確或它說，球隊是不是一個有效的列。有任何想法嗎？

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