我如何 select 区分并计算那些 selected？

Question

如何 select 区分并计算那些 selected？这是我的 Select Distinct:

代码

SELECT distinct  [ClientID]
  ,[AssessmentDate]

FROM [dbo].[UserAssessrcads]

我希望它以以下结尾：

RCADS      62

（或类似的东西）

Answer 1

您可以使用动态 table

  select count(*) from ( 
      SELECT distinct  [ClientID]
              ,[AssessmentDate]
        FROM [dbo].[UserAssessrcads] ) t

Answer 2

更好的方法是：

SELECT [ClientID],[AssessmentDate], count(1)
FROM [dbo].[UserAssessrcads]
group by [ClientID],[AssessmentDate]

How do I select distinct and count those selected?