MySQL-按多个类别运行总计

Question

我想按EmployeeID，PayDateStart，JobDate和JobTime对运行总计列进行分类，我的代码如下：

SELECT EmployeeID, 
   PayDateStart, 
   JobDate, 
   JobTime, 
   JobNo, 
   NetHrs,
  (
  SELECT SUM(NetHrs)
  FROM   test2 t2
  WHERE  t1.EmployeeID    =  t2.EmployeeID
  AND    t1.PayDateStart >=  t2.PayDateStart
  AND    t1.PayDateStart <=  t2.JobDate
  AND    t1.JobDate      >=  t2.JobDate 

  ) AS CummNetHrs
FROM test2 t1
ORDER BY EmployeeID, PayDateStart, JobDate, JobTime;

它给我这样的输出：

EmployeeID  PayDateStart  JobDate    JobTime    JobNo     NetHrs    CummNetHrs
666         06/03/16    06/04/16    13:00:00    6651    9.44    9.44
666         06/03/16    06/05/16    09:00:00    6653    8.18    17.62
666         06/03/16    06/07/16    09:00:00    6654    9.97    27.59
666         06/03/16    06/09/16    09:00:00    6661    9.43    37.02
666         06/10/16    06/11/16    09:00:00    6662    12.69   18.84
666         06/10/16    06/11/16    10:00:00    6663    6.15    18.84
666         06/10/16    06/12/16    08:00:00    6664    5.83    24.67
666         06/10/16    06/14/16    09:00:00    6665    7.27    31.94
666         06/10/16    06/15/16    09:00:00    6666    8.48    40.42    
444         5/27/2016   5/27/2016   9:00:00     4441    9.33    9.33
444         5/27/2016   5/28/2016   8:30:00     4442    5.67    15
444         5/27/2016   5/30/2016   9:00:00     4443    9.67    24.67
444         5/27/2016   5/31/2016   9:00:00     4444    12.67   37.34

但是对于在同一天但多次工作的员工，运行总和代码无法计算-即使我尝试使用“ t1.JobTime> = t2.JobTime”，它也显示相同的累计值：

EmployeeID  PayDateStart    JobDate JobTime     JobNo     NetHrs    CummNetHrs                      
666        6/10/2016    6/11/2016   9:00:00     6665    12.69   18.84
666        6/10/2016    6/11/2016   10:00:00    6664    6.15    18.84

任何建议将不胜感激！

Answer 1

请尝试以下...

SELECT EmployeeID,
       PayDateStart,
       JobDate,
       JobTime,
       JobNo,
       NetHrs,
       (
           SELECT SUM( NetHrs )
           FROM test2 t2
           WHERE t1.EmployeeID   =   t2.EmployeeID
             AND t1.PayDateStart >=  t2.PayDateStart
             AND t1.PayDateStart <=  t2.JobDate
             AND ( t1.JobDate + INTERVAL TIME_TO_SEC( t1.JobTime ) SECOND ) >=  ( t2.JobDate + INTERVAL TIME_TO_SEC( t2.JobTime ) SECOND )
       ) AS CummNetHrs
FROM test2 t1
ORDER BY EmployeeID,
         PayDateStart,
         JobDate,
         JobTime;

为了解决这个问题，我寻求了一种将date和time字段加在一起的方法。 我在添加日期和时间字段中找到了一个解决方案以在MySQL中获取DATETIME字段，并根据该解决方案修改了您的代码。

如果您有任何问题或意见，请随时发表评论。