SQL Server 中列值的每行总计

Question

我有一个查询，该查询返回员工工作了一天的 DateTime Spans、该时间与一年中的哪一周以及这些时间跨度的日期。它工作得非常好，但我想计算特定一周中每一天的运行总数。

目前，我的查询如下所示：

SELECT A.*
FROM (
    SELECT WeekNumber, SUM(NumberOfSecondsWorked) AS NumberOfSecondsWorkedInDay, MIN(FromTime) AS StartOfDay, MAX(ToTime) AS EndOfDay, (SELECT WeeklyTotal = SUM(NumberOfSecondsWorked) FROM #temp AS T2 WHERE T2.WeekNumber = T1.WeekNumber) AS WeeklyTotal
    FROM #temp AS T1 GROUP BY DayMonth, WeekNumber) A

然后返回：

我遇到的问题是我希望每周总计按 Row 汇总，因此数据如下所示：

每行的每周总和。谁能告诉我我在查询中做错了什么？

Answer 1

您的查询和结果集并不完全一致。例如，您的结果集有 StartOfDay。

但是，你似乎想要：

SELECT WeekNumber, SUM(NumberOfSecondsWorked) AS NumberOfSecondsWorkedInDay,
       MIN(FromTime) AS StartOfDay, MAX(ToTime) AS EndOfDay,
       SUM(SUM(NumberOfSecondsWorked)) OVER (PARTITION BY WeekNumber ORDER BY MIN(FromTime))
FROM #temp AS T1
GROUP BY DayMonth, WeekNumber;

编辑：

在 SQL Server 2008 中，您需要一种不同的方法，例如相关子查询：

WITH wn as (
      SELECT WeekNumber, SUM(NumberOfSecondsWorked) AS NumberOfSecondsWorkedInDay,
             MIN(FromTime) AS StartOfDay, MAX(ToTime) AS EndOfDay
      FROM #temp T1
      GROUP BY DayMonth, WeekNumber
     )
SELECT wn.*,
       (SELECT SUM(wn2.NumberOfSecondsWorked)
        FROM wn wn2
        WHERE wn2.WeekNumber = wn.WeekNumber AND
              wn2.FromTime <= wn.FromTime
       )
FROM wn;

Answer 2

使用窗口函数尝试如下操作

     SELECT WeekNumber,
     SUM(NumberOfSecondsWorked) AS NumberOfSecondsWorkedInDay,
     MIN(FromTime) AS StartOfDay, MAX(ToTime) AS EndOfDay,
     SUM(NumberOfSecondsWorked) over( order by WeekNumber) AS WeeklyTotal
    FROM #temp AS T1
    GROUP BY DayMonth, WeekNumber