内盒如何使用计数

Question

请帮助我用案例陈述来计数。

我想要这个结果：

Equal : 50
GT : 25
LT : 15

下面是我的代码：

select Input,
      CASE
      when math = '=' then 
        count(case when Input = UDTarget then Input else 0 end)
      end as Equals,
      CASE
      when math = '>' then 
        count(case when ISNUMERIC(Input) < ISNUMERIC(UDTarget) then Input else 0 end)
      end as GT,
      CASE when math = '<' then 
        count(case when ISNUMERIC(Input) > ISNUMERIC(UDTarget) then Input else 0 end)  
      END as LT 
FROM [NEWSEMAKPI].[dbo].[NewCriteria] NC 
inner join [NEWSEMAKPI].[dbo].[UpdateData] UD ON UD.Cid = NC.Id 
where InputWeek='15' 
group by Input 

Answer 1

之所以显示您的错误，是因为您没有在group by子句中添加math 。 因此，您应该将其放入其中：

select Input,
      CASE
      when math = '=' then 
        count(case when Input = UDTarget then Input else 0 end)
      end as Equals,
      CASE
      when math = '>' then 
        count(case when ISNUMERIC(Input) < ISNUMERIC(UDTarget) then Input else 0 end)
      end as GT,
      CASE when math = '<' then 
        count(case when ISNUMERIC(Input) > ISNUMERIC(UDTarget) then Input else 0 end)  
      END as LT 
FROM [NEWSEMAKPI].[dbo].[NewCriteria] NC 
inner join [NEWSEMAKPI].[dbo].[UpdateData] UD ON UD.Cid = NC.Id 
where InputWeek='15' 
group by Input, math