我正在尝试根据一系列出勤记录获得正确的登录和注销。这是一个示例数据。
employee_id logdatetime tkstype
PH120013 2012-08-25 08:30:00.000 0
PH120013 2012-08-25 13:00:00.000 1
PH120013 2012-08-26 02:30:00.000 0
PH120013 2012-08-27 15:00:00.000 1
PH120013 2012-08-27 17:00:00.000 0
PH120013 2012-08-27 21:00:00.000 1
PH120013 2012-08-28 08:00:00.000 0
PH120013 2012-08-28 19:00:00.000 1
PH120013 2012-08-29 03:30:00.000 0
PH120013 2012-08-29 21:00:00.000 1
PH120013 2012-08-30 05:30:00.000 0
PH120013 2012-08-30 19:00:00.000 1
PH120013 2012-08-31 05:30:00.000 0
PH120013 2012-08-31 20:30:00.000 1
PH120013 2012-09-01 01:00:00.000 1
PH120013 2012-09-01 21:00:00.000 0
TKSTYPE = 0 - IN 1 - OUT
我的困境是根据用户查询日期获取下一次登录。这样我就可以正确注销用户。例如，我想查看用户PH120013的登录信息，日期是2012-08-26。我想要的输出是：
IN OUT
PH120013 2012-08-26 02：30：00.000 2012-08-27 15：00：00.000
这是我的完整查询：
;With Attendance_CTE As
(
SELECT employee_id,CONVERT(VARCHAR(10), logdatetime, 120) logdate,
CONVERT(VARCHAR(12), logdatetime, 114) logtime,logdatetime,tkstype
FROM MSTR_ATTENDANCE WHERE CONVERT(VARCHAR(10), logdatetime, 120) >='2012-08-26'
),
Employee_CTE As
(
SELECT employee_id,
'2012-08-26' + CONVERT(datetime,tks_ofc_in,108) as Official_IN,
'2012-08-26' + CONVERT(datetime,tks_ofc_out,108) as Official_OUT,
hireddate + '00:00:00.000' as HiredDate_DateTime,
'2012-08-26' + ' 00:00:00.000' as TKS_DateTime
FROM vwu_Employee_Contract_Info
),
Min_Max_Attendance As
(
SELECT t_in.employee_id,
min(isnull(t_in.logdatetime,'1753-01-01 00:00:00.000')) min_in,
max(isnull(t_out.logdatetime,'1753-01-01 00:00:00.000')) max_out
FROM
(SELECT employee_id,logdatetime FROM Mstr_Attendance WHERE tkstype=0) t_in
LEFT JOIN
(SELECT employee_id,logdatetime FROM Mstr_Attendance WHERE tkstype=1) t_out
ON
t_in.employee_id=t_out.employee_id
GROUP BY
t_in.employee_id
)
SELECT Attendance_CTE.Employee_ID,logdatetime,
CASE WHEN TKSType=0 THEN
CASE Min_Max_Attendance.min_in
-- first day
WHEN '1753-01-01 00:00:00.000' THEN
CASE
-- check if current logdatetime is within the hireddate and current date query
WHEN Attendance_CTE.LogDateTime BETWEEN HiredDate_DateTime AND TKS_DateTime
THEN
CASE
WHEN Attendance_CTE.LogDateTime BETWEEN Employee_CTE.Official_In AND
Employee_CTE.Official_Out THEN Attendance_CTE.LogDateTime
END
ELSE
-- no time in?
'1753-01-01 00:00:00.000'
END
ELSE
-- regular days
CASE
-- check whether no out
WHEN Min_Max_Attendance.max_out = '1753-01-01 00:00:00.000' THEN Attendance_CTE.Logdatetime
ELSE
-- but with previous out
CASE
-- check whether logdatetime is not greater than the TKS_DateTime
WHEN Convert(varchar(10),Attendance_CTE.logdatetime,120) !> TKS_DateTime THEN
CASE
-- when logdatetime range on employee official time including late
WHEN Attendance_CTE.logdatetime BETWEEN Employee_CTE.Official_In AND Employee_CTE.Official_Out THEN Attendance_CTE.Logdatetime
-- when logdatetime is less than the max l_out on the records
WHEN Attendance_CTE.LogDateTime <= Min_Max_Attendance.max_out THEN Attendance_CTE.LogDateTime
-- when logdatetime is on range between the min l_in and max l_out on the records
WHEN Attendance_CTE.LogDateTime BETWEEN Min_Max_Attendance.min_in AND Min_Max_Attendance.max_out THEN Attendance_CTE.LogDateTime
-- when logdatetime is on range between current query date to official in
WHEN Attendance_CTE.LogDateTime BETWEEN TKS_DateTime AND Employee_CTE.Official_In THEN Attendance_CTE.LogDateTime
-- when logdatetime is not greater than equal to current query date
WHEN Attendance_CTE.LogDateTime < TKS_DateTime THEN Attendance_CTE.LogDateTime
END
/*ELSE
-- no time in?
'1753-01-01 00:00:00.000'*/
END
END
END
END ActualLogIn,
CASE WHEN TKSType=1 THEN
CASE
-- check whether logdatetime is less than official_out and greater than official_in, undertime
WHEN Attendance_CTE.LogDateTime > Employee_CTE.Official_Out AND Attendance_CTE.LogDateTime !> Employee_CTE.Official_In
THEN Attendance_CTE.LogDateTime
-- logdatetime is greater than official out and not greater than the next log in
WHEN Attendance_CTE.LogDateTime >= Employee_CTE.Official_Out AND Attendance_CTE.LogDateTime !> '2012-08-27 17:00:00.000'
THEN Attendance_CTE.LogDateTime
WHEN Attendance_CTE.LogDateTime !> '2012-08-27 17:00:00.000'
THEN Attendance_CTE.LogDateTime
END
END ActualLogOut
FROM Employee_CTE
LEFT JOIN Attendance_CTE
ON
Employee_CTE.Employee_ID=Attendance_CTE.Employee_ID
LEFT JOIN Min_Max_Attendance
ON
Employee_CTE.Employee_ID=Min_Max_Attendance.Employee_ID
AND
Attendance_CTE.Employee_ID=Min_Max_Attendance.Employee_ID
WHERE
Employee_CTE.Employee_ID IN ('PH120012','PH120013')
答案 0 :(得分：2)
试试这个：
由于我不确定数据库，这是一个通用的解决方案，这几乎适用于所有数据库
select * from (
select logi_in.logdatetime as 'IN' , logi_out.logdatetime as 'OUT'
from MSTR_ATTENDANCE logi_in
left outer join MSTR_ATTENDANCE logi_out
on logi_in.employee_id=logi_out.employee_id
and logi_in.tkstype=0
and logi_out.logdatetime =(
select MIN(logdatetime)
from MSTR_ATTENDANCE MSTR
where MSTR.employee_id = logi_out.employee_id
and MSTR.tkstype = 1
and MSTR.logdatetime > logi_in.logdatetime
)
and logi_in.employee_id='PH120013'
and logi_in.logdatetime='2012-08-26 02:30:00.000')t
where OUT is not null