访问 SQL 子查询 - 在结果集中的每个日期之前计算记录？

Question

我有一份 Remedy 票证转储，其中包括提交日期和解决日期。我需要做的是计算每个提交了至少一张票的日期：

1. $date 提交的工单数量
2. $date 解决的票数
3. $date 开始营业时仍然开放的门票数量

我有一个查询可以获取项目 1 和 2，但我被困在 3 上。我基本上需要一种方法来查看子查询中的 $date 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（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，我会这样做，但我真的希望能够使用 SQL 执行所有这些操作，以便可以轻松地将原始数据转储到 Excel 等。

另外，为了澄清：当我从 Remedy 获得转储时，我有单独的表用于当前打开或当前处于非打开状态的票证，因此第一个子查询中的 UNION。此外，Remedy 的所有日期字段都有时间戳，因此 FORMAT 函数会去掉时间戳。

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