Question

我有一个数据集，如下所示：

ResourceID           RequirementId        ProjectID            Startdate               EndDate                 BillingPercentage
-------------------- -------------------- -------------------- ----------------------- ----------------------- ---------------------------------------
1                    5066                 7505                 2015-09-15 00:00:00.000 2015-09-30 00:00:00.000 50
2                    4748                 7499                 2015-09-10 00:00:00.000 2015-09-20 00:00:00.000 50

我想计算我的查询所针对的特定月份的范围和相应的结算百分比：

    INSERT INTO @DateTimeline
    SELECT @MonthStartDate AS OSTARTDATE,@MonthEndDate AS OENDDATE,0 

    INSERT INTO @DateTimeline
    SELECT Startdate AS OSTARTDATE,EndDate AS OENDDATE,BillingPercentage From @RESOURCE_UNBILLED Order by Startdate

    INSERT INTO @DateTimeline
    SELECT EndDate AS OSTARTDATE,EndDate AS OENDDATE,BillingPercentage From  @RESOURCE_UNBILLED Order by Startdate

数据如下：

 SerialNo    OSTARTDATE              OENDDATE                BillingPercentage
----------- ----------------------- ----------------------- ---------------------------------------
1           2015-09-01 00:00:00.000 2015-09-30 00:00:00.000          0
2           2015-09-10 00:00:00.000 2015-09-20 00:00:00.000         50
3           2015-09-15 00:00:00.000 2015-09-30 00:00:00.000         50
4           2015-09-20 00:00:00.000 2015-09-20 00:00:00.000         50
5           2015-09-30 00:00:00.000 2015-09-30 00:00:00.000         50

我想要检索以下数据

    OSTARTDATE              OENDDATE                BillingPercentage
----------- ----------------------- ----------------------- ---------------------------------------
2015-09-01 00:00:00.000 2015-09-10 00:00:00.000               0
2015-09-10 00:00:00.000 2015-09-15 00:00:00.000              50
2015-09-15 00:00:00.000 2015-09-20 00:00:00.000             100
2015-09-20 00:00:00.000 2015-09-30 00:00:00.000              50

请建议我怎么才能得到这个呢？我也可以在这里使用支点吗？

Answer 1

使用表格变量存储@dateStamps列SerialNo，OSTARTDATE和OENDDATE。

尝试此查询：

SELECT  d.SerialNo, d.OSTARTDATE, d.OENDDATE
        , ( SELECT SUM(t.BillingPercentage)
            FROM yourTable t
            WHERE d.OENDDATE BETWEEN t.Startdate AND t.EndDate
               OR d.OSTARTDATE BETWEEN t.Startdate AND t.EndDate
               OR (d.OSTARTDATE > t.Startdate AND d.OENDDATE < t.EndDate)
              ) AS BillingPercentage
FROM 
    @dateStamps d

我的完整代码是：

DECLARE @DatePart as int = 5

;WITH dateStamps AS (
    SELECT 1 As SerialNo, CAST('2015-' + CONVERT(varchar, MONTH(MIN(t.Startdate))) + '-01 00:00:00.000' As datetime) AS OSTARTDATE
                        , CAST('2015-' + CONVERT(varchar, MONTH(MIN(t.Startdate))) + '-01 00:00:00.000' As datetime) + (@DatePart - 1) AS OENDDATE

    FROM yourTable t
    UNION ALL 
    SELECT ds.SerialNo + 1, ds.OSTARTDATE + @DatePart, ds.OSTARTDATE + (@DatePart * 2 - 1)
    FROM dateStamps ds
    WHERE MONTH(OSTARTDATE + @DatePart) <= MONTH(ds.OSTARTDATE)
)
SELECT  d.SerialNo, d.OSTARTDATE, d.OENDDATE
        , ( SELECT SUM(t.BillingPercentage)
            FROM t
            WHERE d.OENDDATE BETWEEN t.Startdate AND t.EndDate
               OR d.OSTARTDATE BETWEEN t.Startdate AND t.EndDate
               OR (d.OSTARTDATE > t.Startdate AND d.OENDDATE < t.EndDate)
              ) AS BillingPercentage
FROM 
    dateStamps d

查找同一列中的日期范围

1 个答案: