獲取最大post_year組考慮到見下表通過電子郵件
Email Post_Year
====== ==========
[email protected] 2007
[email protected] 2008
[email protected] 2009
[email protected] 2010
我希望有最大Post_year組結果通過電子郵件
Email Post_Year
====== ==========
[email protected] 2008
[email protected] 2010
此代碼不會因爲[Post_Year]
工作不彙總操作having
部分
SELECT TOP (1000) *
FROM [DataExtraction2].[dbo].[Users]
group by [Email]
having max([Post_Year]) = [Post_Year]
如何達到目的?
在'select'中包含email和max(postyear),並從查詢中刪除'having'和'top'。 –