如何根据日期范围内的日期选择子字符串

Question

我正在尝试创建一个脚本来计算存储过程的预期结果。有几个与 sp 相关的表共享一个 BatchId。 x_NonFullTimeEmployees 有一个 StatusString 列，其长度等于 MeasurementStartDate 和 MeasurementStartDate 之间的时间段。 IE。在 7 天的时间里，它可能看起来像 'TAAAAAA'。我正在选择同一时期的时间卡并将它们的值相加。我的问题是我只想使用 TimeCard 值，其中 StartDate 是在 StatusString 中由“A”表示的一天。我该怎么做？

DECLARE @batchid INT = 1;

WITH CTE_ACTIVENFS
AS
(
    select e.EmployeeId,e.OrganizationId,e.MeasurementStartDate, e.MeasurementEndDate
    from x_VHEActiveNonFullTimeEmployees e
    where BatchId = @batchid
)
,
CTE_RESULTS
AS
(
    SELECT  tc.OrganizationId ,tc.EmployeeId, SUM(tc.workhour) AS "Total Paid Hours", 
    DATEDIFF(month, (SELECT TOP 1 StartDate  FROM TimeCard WHERE EmployeeId = tc.EmployeeId),(SELECT TOP 1 StartDate  FROM TimeCard WHERE EmployeeId = tc.EmployeeId ORDER BY StartDate DESC)) 
    AS "Total Paid Period",
    SUM(tc.workhour)/ DATEDIFF(month, (SELECT TOP 1 StartDate  FROM TimeCard WHERE EmployeeId = tc.EmployeeId),(SELECT TOP 1 StartDate  FROM TimeCard WHERE EmployeeId = tc.EmployeeId ORDER BY StartDate DESC))
    AS "Average Worked Hours"
    FROM TimeCard tc INNER JOIN CTE_ACTIVENFS hire ON hire.EmployeeId = tc.EmployeeId
    WHERE tc.EmployeeId IN (SELECT EmployeeId FROM CTE_ACTIVENFS)
    AND tc.StartDate  BETWEEN (SELECT TOP 1 MeasurementStartDate FROM CTE_ACTIVENFS) AND (SELECT TOP 1 MeasurementEndDate FROM CTE_ACTIVENFS)
    AND tc.OrganizationId = (SELECT TOP 1 OrganizationId FROM CTE_ACTIVENFS)
    GROUP BY tc.EmployeeId, tc.OrganizationId
)
SELECT * FROM CTE_RESULTS

Answer 1

首先我想说你的查询真的很乱。所有的SELECT TOP 1 都应该变成连接。现在对于您的问题，我会这样做：

select *
from x_NonFullTimeEmployees hire
inner join timecard tc
  on tc.EmployeeId = hire.EmployeeId
  and tc.StartDate between hire.MeasurementStartDate and hire.MeasurementEndDate
  and substring(
    hire.StatusString, 
    datediff(dd, hire.MeasurementStartDate, tc.StartDate) +1, 
    1) = 'A'
where hire.BatchId = @batchid