Question

我想从我的桌子中检索前10名的ID和DATE字段。

如果没有ID，则下面的查询有效：

select top 10 MAX(FromDate) as upcomingdates 
from TM_Schedule 
group by(FromDate)

但如果我添加ID，则会抛出错误：

select top 10 MAX(FromDate) as upcomingdates, ID 
from TM_Schedule 
group by(FromDate)

Answer 1

我不知道您的数据，但看起来您可以在没有GROUP BY或MAX的情况下实现这一目标。试试这个：

SELECT TOP 10 ID, FromDate
FROM TM_Schedule
ORDER BY FromDate DESC

它应该有效，除非您对同一FromDate有多个ID值。

Answer 2

Select FromDate as upcomingdates, ID from TM_Schedule 
WHERE FromDate IN 
( 
   select top 10 MAX(FromDate)as upcomingdates from TM_Schedule group by(FromDate)
)
ORDER BY FromDate

Answer 3

这样做：

select top 10 MAX(FromDate)as upcomingdates, ID 
from TM_Schedule group by(FromDate), ID

您还需要按ID分组

来自sql server的前10名

3 个答案: