我有这个常见的表格表达式
WITH total_hour
AS (
SELECT
employee_id,
SUM(ROUND(CAST(DATEDIFF(MINUTE, start_time, finish_time) AS NUMERIC(18, 0)) / 60, 2)) AS total_h
FROM Timesheet t
WHERE t.employee_id = @employee_id
AND DENSE_RANK() OVER (
ORDER BY DATEDIFF(DAY, '20130925', date_worked) / 7 DESC ) = @rank
GROUP BY t.personnel_id
)
这是样本数据:
ID employee_id worked_date start_time finish_time
1 1 2013-09-25 09:00:00 17:30:00
2 1 2013-09-26 07:00:00 17:00:00
8 1 2013-10-01 09:00:00 17:00:00
9 1 2013-10-04 09:00:00 17:00:00
12 1 2013-10-07 09:00:00 17:00:00
13 1 2013-10-30 09:00:00 17:00:00
14 1 2013-10-28 09:00:00 17:00:00
15 1 2013-11-01 09:00:00 17:00:00
假设星期三是本周的第一天,我的日期是2013-09-25。我想得到@rank为1时从09-25到10-01的总工作小时数,以及当@ rank = 2时从10-02到10-08的总小时等等。
由于
答案 0 :(得分:1)
要获得特定周内员工的工作小时数,只需使用合适的WHERE标准。无需使用DENSE_RANK或类似的窗口函数。
假设你有一个@Week参数,它包含一个整数(当前周为0,上周为1,前一周为2,等等):
SELECT
employee_id
SUM(ROUND(CAST(DATEDIFF(MINUTE, start_time, finish_time) AS NUMERIC(18, 0)) / 60, 2)) AS total_h
FROM
Timesheet t
WHERE
t.employee_id = @employee_id AND
date_worked BETWEEN DATEADD(ww, DATEDIFF(ww,0,GETDATE()) - @Week, 0)
AND DATEADD(ww, DATEDIFF(ww,0,GETDATE()) - @Week, 0) + 7
在这里,我使用当前日期(GETDATE()
)作为基准日期,但您可以将其替换为20130925
,如果这是您需要的。