SQL查询得到的价格为第二最晚日期

Question

我有这个疑问：

select @cost = @cost +     
    (select top 1 price from 
    (select top 2 price, date from myTable order by date DESC) 
    order by date ASC 
) 

而且我得到错误：关键字“顺序”附近有语法错误。 如何解决这个问题？

Answer 1

我想这个子查询

(select top 2 price, date from myTable order by date DESC) 

需要一个别名，像这样

(select top 2 price, date from myTable order by date DESC) sq 

但我会写这样的：

SELECT @cost = @cost + (
SELECT price FROM (
SELECT price, date, ROW_NUMBER() OVER (ORDER BY date DESC) AS rownum 
) sq WHERE rownum = 2 
)