Question

我想获取创建记录的最新日期（CreatedDate），UserId以及表格中唯一身份用户的总数。

这是我到目前为止所做的，似乎没有用。

Select UserId, MAX(CreatedDate), Count(Distinct UserID) AS 'Number of Users'
From DPP_Exports__Customers

有人可以帮忙吗？

谢谢，

伊克巴尔

Answer 1

查询最新记录的UserId：

select userid,CreatedDate 
from DPP_Exports__Customers  
order by CreatedDate  desc limit 1;

查询每个用户的最长日期：

select userid,max(CreatedDate)
from DPP_Exports__Customers  
group by userid;

查询不同的用户数：

select count(distinct userid) from DPP_Exports__Customers

所有人的单一查询：

select  cust.userid,max(cust.CreatedDate) as max_createdDate,
        (select count(distinct userid) from DPP_Exports__Customers) as distinct_user_count,
        (select userid from DPP_Exports__Customers order by CreatedDate  desc limit 1) as  latest_userid
from DPP_Exports__Customers  cust
group by cust.userid;

Answer 2

Try it...

Select GROUP_CONCAT(UserId), MAX(CreatedDate), Count(Distinct UserID)AS 'Number of Users',Max(UserId) as latest_user From DPP_Exports__Customers

如何计算不同的用户，获取USER的MaxDate和最新记录的UserId

2 个答案: