如何獲得的平均SQL Server中的數據的一列

Question

我的目標是具有比平均教育水平更高的員工名單

這裏是我有

Select [ED_LVL], 
    AVG (ED_LVL) as 'AVG ED_LVL' 
    From [Enterprise].[dbo].[Employee] 
    Group BY [ED_LVL] 

我猜我有使某種類型的子查詢或分區？不知道該怎麼辦 謝謝！

Answer 1

試試這個：

Select * 
From [Enterprise].[dbo].[Employee] 
WHERE ED_LVL > (Select AVG(ED_LVL) From [Enterprise].[dbo].[Employee]) 

Answer 2

這是功能如何均可以使用：

SELECT AVG(column_name) FROM table_name 

關於想問你，試試這個：

Select * FROM [Enterprise].[dbo].[Employee] 
WHERE [ED_LVL]>(SELECT AVG(ED_LVL) FROM [Enterprise].[dbo].[Employee]) 

其中給出員工詳細誰家ED_LVL比一般ED_LVL更大。

Answer 3

試試這個：

select * 
from Employee t 
where t.ED_LVL > 
(
    select AVG(e.ED_LVL) [avg] 
    from Employee e 
) 

Answer 4

試試這個！

SELECT [ED_LVL], 
    FROM (
     SELECT 
     [ED_LVL], 
     AVG([ED_LVL]) OVER() AS avg_edu, 
     FROM [Enterprise].[dbo].[Employee] 
    ) s 
    WHERE [ED_LVL]> avg_edu