錯誤：聚合不應出現在WHERE子句

Question

我試圖讓列的Max在：

select * from 
(select col1, count(*) as cnt from talbe1 
group by col1 
) dt 
where cnt = max(cnt) 

我試圖得到確切的價值和它的工作，如：

where cnt = 5 

或

where cnt > 3 

那是好的，所以第一個查詢出了什麼問題？

編輯：我放在那裏的數字（5,3）是完全隨機的，我想獲得最大數量的cnt。

Answer 1

彙總條款必須進入HAVING部分。但是，這不適用於您的查詢。你可能想要做的是：

select top 1 col1, count(*) as cnt 
from talbe1 
group by col1 
order by count(*) desc 

Answer 2

你可以用HAVING子句做到這一點。例如，如果你想獲得cnt=3記錄

Select col1, count(*) as cnt from talbe1 
Group by col1 
Having count(*)=3 

如果你想獲得MAX(cnt)

Select Top(1) col1, count(*) as cnt from talbe1 
Group by col1 
Order by cnt desc 

Answer 3

我找到了解決辦法，
這是很簡單的：（我應該集中更多）

select max(cnt) from 
(select Fld301, count(*) as cnt from TbC3 
group by Fld301 
) dt 

Answer 4

查詢如下：

select * from 
(
    select 
     col1, 
     count(*) as cnt, 
     RANK() OVER(ORDER BY count(*) DESC) AS ran 
    from talbe1 
    group by col1 
) dt 
where ran=1