SQL：異常，否則便會排序結果集

Question

使用Oracle 11g

我想一個例外，否則排序表

select fruit as popluar_choices 
from menu 
order by fruit /* Exception put 'grapefruit' at top of list */ 

所需的結果

popular_choices 
----------- 
grapefruit 
apple 
fig 
kiwi 
lemon 
pear 

它類似於這個帖子： How to apply non standard SQL column sort order?

Answer 1

select fruit as popluar_choices 
    from menu 
order by case fruit when 'grapefruit' then 0 
             else 1 
       end, 
     fruit 

Answer 2

select fruit as popluar_choices 
from menu 
order by CASE fruit = 'grapefruit' THEN '__' ELSE fruit END 

Answer 3

SELECT fruit AS popular_choices FROM menu 
ORDER BY 
    CASE fruit 
     WHEN 'grapefruit' THEN '' 
     ELSE fruit 
    END