访问SQL子查询 - 计算结果集中每个日期之前的记录？

Question

我有一张Remedy门票，包括提交的日期和解决的日期。我需要做的是计算至少提交一张票的每个日期：

1. $ date
上提交的门票数量
2. 在$ date
上解决的门票数量
3. $ date
开始营业时仍然打开的门票数量

我有一个查询可以获得第1项和第2项，但我仍然坚持使用3.我基本上需要一种方法来查看来自子查询的$ date为1和2并将其用作我的WHERE子句3的子查询。

这是我的查询：

SELECT xDate, sTot, cTot, oTot FROM 
(
  (
    (
      SELECT xDate, COUNT(*) AS sTot
      FROM (
        SELECT FORMAT(SubmitDate, "mm/dd/yyyy") AS xDate FROM tblOpenINC
        UNION ALL
        SELECT FORMAT(SubmitDate, "mm/dd/yyyy") AS xDate FROM tblClosedINC
      ) GROUP BY xDate
    ) AS sub

    INNER JOIN

    (
      SELECT FORMAT(LastResolvedDate, "mm/dd/yyyy") AS yDate, COUNT(*) AS cTot
      FROM tblClosedINC
      GROUP BY FORMAT(LastResolvedDate, "mm/dd/yyyy")
    ) AS res

    ON res.yDate = sub.xDate
  )

  INNER JOIN

  (
    SELECT FORMAT(SubmitDate, "mm/dd/yyyy") AS zDate, COUNT(*) AS oTot
    FROM tblClosedINC
    WHERE FORMAT(SubmitDate, "mm/dd/yyyy") < DateValue(xDate)
    GROUP BY FORMAT(SubmitDate, "mm/dd/yyyy")
  ) AS opn

  ON opn.zDate = sub.xDate

) 
ORDER BY DateValue(xDate) ASC

最后一个子查询不起作用，因为它不知道xDate（来自第一个子查询的日期）是什么。

如果我必须使用VBA执行此操作，我会，但我真的希望能够使用SQL完成所有操作，以便原始数据可以轻松地转储到Excel等等。

另外，为了澄清：当我从Remedy获得转储时，我有当前打开或当前处于非打开状态的票证的单独表格，因此第一个子查询中的UNION。此外，所有Remedy的日期字段都有一个时间戳，因此FORMAT功能会删除时间戳。

Answer 1

尝试将子查询移到顶部。也许这会有所帮助。

SELECT xDate, sTot, cTot,  
(SELECT FORMAT(SubmitDate, "mm/dd/yyyy") FROM tblClosedINC WHERE FORMAT(SubmitDate, "mm/dd/yyyy") < DateValue(xDate) GROUP BY FORMAT(SubmitDate, "mm/dd/yyyy")) as zDate,
(SELECT COUNT(*) FROM tblClosedINC WHERE FORMAT(SubmitDate, "mm/dd/yyyy") < DateValue(xDate)GROUP BY FORMAT(SubmitDate, "mm/dd/yyyy")) as oTot
 FROM 
(
  (
    (
      SELECT xDate, COUNT(*) AS sTot
      FROM (
        SELECT FORMAT(SubmitDate, "mm/dd/yyyy") AS xDate FROM tblOpenINC
        UNION ALL
        SELECT FORMAT(SubmitDate, "mm/dd/yyyy") AS xDate FROM tblClosedINC
      ) GROUP BY xDate
    ) AS sub

    INNER JOIN

    (
      SELECT FORMAT(LastResolvedDate, "mm/dd/yyyy") AS yDate, COUNT(*) AS cTot
      FROM tblClosedINC
      GROUP BY FORMAT(LastResolvedDate, "mm/dd/yyyy")
    ) AS res

    ON res.yDate = sub.xDate
  )

) 
ORDER BY DateValue(xDate) ASC