SQL运行总计按日期分组 [英] SQL Running Total Grouped by Date

问题描述

（使用SQL Server 2008）我可以很容易地得到这个工作，如果我建立一个视图，然后查询视图，但我想在一个SQL查询中执行此。我有一个表，其中包含两列（DeliveredDate（DateTime），Delivered（Varchar））。我首先将DeliveredDate转换为仅日期，然后按日期分组。同时，我执行计数交货（列是YES或NULL）。这是我用来完成这部分：

(Using SQL Server 2008) I could easily get this to work if I built a view, and then a query on the view, but I want to perform this in one SQL query. I have a table that contains two columns (DeliveredDate (DateTime), Delivered (Varchar)). I am first converting DeliveredDate to Date only, and then grouping by Date. At the same time I am performing a Count on Delivered (column is either YES or NULL). Here is what I use to accomplish this portion:

  SELECT CAST([DeliveredDate] As Date),
         COUNT([Delivered])
  FROM [TableName]
  GROUP BY CAST([DeliveredDate] As Date)
  ORDER BY CAST([DeliveredDate] As Date)

作为输出，我会得到类似的结果：

As an output, I get something like:

DeliveredDate  |  Delivered
 2012-04-24          10
 2012-04-25         500
 2012-04-26         422
 2012-04-27          33

我要找的是这样的：

DeliveredDate  |  Delivered  |  RunningTotal
 2012-04-24          10            10
 2012-04-25         500           510
 2012-04-26         422           932
 2012-04-27          33           965

我已经尝试了我在那里看到的各种例子，但没有一个似乎匹配执行Count和

I've tried various examples I've seen out there, but none seem to match this scenario of performing a Count and a RunningTotal on said Count.

推荐答案

我不确定CTE是否计为一个视图，但这将在SQL 2005+它不支持SUM的有序OVER子句，

I'm not sure if a CTE counts as a view but this will work in SQL 2005+ which Does Not Support ordered OVER clauses for SUM,

WITH cte (DeliveredDate, Delivered)
     AS (SELECT Cast([DeliveredDate] AS DATE) DeliveredDate, 
                Count([Delivered]) Delivered 
         FROM   [TableName] 
         GROUP  BY Cast([DeliveredDate] AS DATE)) 
SELECT d1.delivereddate, 
       d1.delivered, 
       Sum(d2.Delivered) RunningTotal 
FROM   cte d1 
       LEFT JOIN cte d2 
         ON d1.delivereddate >= d2.DeliveredDate 
GROUP  BY d1.delivereddate, 
          d1.delivered 
ORDER BY d1.delivereddate

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