每个员工每周工作的SQL计数班次

Question

我想构建一个查询，显示我的员工每天工作的次数。例如，我想表明，在一段时间内，吉姆工作了12个星期六，3个星期一和星期四。我打算通过从时钟条目中提取工作日datepart来做到这一点。我只是不知道如何构建它，以便有七个条件计数列。

提前致谢

Answer 1

做出很多假设：

  
1. “TimeCard”是您的表格
  
2. EmployeeID是您的员工标识符
  
3. 每位员工每天有1次时间记录
  
4. 员工工作的日期是姓名[timestamp]

select 
    EmployeeID,
    count(case when datepart(weekday, [timestamp]) = 1 then 1 end) as [Sunday],
    count(case when datepart(weekday, [timestamp]) = 2 then 1 end) as [Monday],
    count(case when datepart(weekday, [timestamp]) = 3 then 1 end) as [Tuesday],
    count(case when datepart(weekday, [timestamp]) = 4 then 1 end) as [Wednesday],
    count(case when datepart(weekday, [timestamp]) = 5 then 1 end) as [Thursday],
    count(case when datepart(weekday, [timestamp]) = 6 then 1 end) as [Friday],
    count(case when datepart(weekday, [timestamp]) = 7 then 1 end) as [Saturday]
from [TimeCard]
group by EmployeeID