TSQL - 如何使用2列的case语句？

Question

我想对2列结果做一个例子。我该怎么做呢？

例如为：

SELECT CASE amount=100 AND DATE IS NOT NULL WHEN 0 THEN 'Something' ELSE '' 

类似的东西？

Answer 1

select case 
    when amount = 100 and date is not null then 'something' 
    else 'something else' 
    end 

这是一个 “被搜索的情况下的表达”（see MSDN）：

CASE 
     WHEN Boolean_expression THEN result_expression [ ...n ] 
     [ ELSE else_result_expression ] END 

Answer 2

select someColumnName, 
     case 
     when amount = 100 AND someothercondition then 'XXX' 
     when amount = 1000 AND anothercondition then 'YYY' 
     else 'WWW' 
     end as "MyColumnName" 
from myTable 

Answer 3

select 
case 
    when 
     amount = 100 
     and date is not null  
    then 
     '0' 
    else 
     'something else' 
end 

Answer 4

查找SELECT WHEN

http://www.4guysfromrolla.com/webtech/102704-1.shtml

Answer 5

SELEC t case when amount = 100 and date is not null then'something'else'something when amount = 0 then'something else'end as MyColumnName