sql 查询结果自定义排序

sqlserver 使用case when then 语句来实现

select name from fruit
order by case name
    when 'Strawberry' then 1
    when 'Banana' then 2
    when 'Apple' then 3
    else 4
end

oracle 使用decode实现

select * from table_example order by decode(class,'C',1,'A',2,'D',3,'B',4)