Question

我有一组员工和一组时隙。例如

Employees

EMP1
EMP2
EMP3
EMP4
EMP5  

Time Slots

08:00AM-10:00AM
10:00AM-12:00PM
04:00PM-06:00PM
08:00AM-12:00PM
02:00PM-06:00PM
08:00AM-04:00PM
09:00AM-01:00PM
08:30AM-01:30PM
12:00PM-04:00PM
 2:00PM-3:00PM

可以将员工分配到任何时隙。我需要的是，如果某个员工在8：00Am-12：00PM的时间段分配，那么该员工应该在08:00 AM-10:00AM和10:00 AM-12:00PM的时间段不可用。同样，如果在04:00 PM-06:00PM分配了一个员工，则该员工在04:00 PM-06:00PM之间的任何时间段都不应该有空，但可以在该时间段之前和之后（而不是在两个时间段之间）使用。

该怎么做？

Answer 1

我假设您有一个映射员工和时隙的桥表。我可以通过以下开发的方案来开发解决方案

SELECT * INTO dbo.Employees FROM (
SELECT 1 empid,'EMP1' emp
union
SELECT 2,'EMP2'
UNION
SELECT 3,'EMP3'
UNION
SELECT 4,'EMP4'
UNION
SELECT 5,'EMP5' )a

SELECT * INTO dbo.TimeSlots FROM (
SELECT 1 sltid,'08:00AM-10:00AM' slt
UNION
SELECT 2,'10:00AM-12:00PM'
UNION
SELECT 3,'04:00PM-06:00PM'
UNION
SELECT 4,'08:00AM-12:00PM'
UNION
SELECT 5,'02:00PM-06:00PM'
UNION
SELECT 6,'08:00AM-04:00PM'
UNION
SELECT 7,'09:00AM-01:00PM'
UNION
SELECT 8,'08:30AM-01:30PM'
UNION
SELECT 9,'12:00PM-04:00PM'
UNION
SELECT 10,'2:00PM-3:00PM')a


SELECT * INTO dbo.TimeSlotsemp FROM (
SELECT 1 emp,2 slt
UNION
SELECT 1,3
UNION 
SELECT 2,6)a

--available slots
SELECT DISTINCT a.empid,a.emp,d.slt AS availableslots FROM employees a
cross JOIN timeslots d
LEFT JOIN TimeSlotsemp b ON a.empid = b.emp
left JOIN timeslots c
ON b.slt = c.sltid
WHERE (d.sltid NOT IN (SELECT slt FROM timeslotsemp WHERE emp = a.empid) or a.empid NOT IN (SELECT emp FROM timeslotsemp))

在SQL计划期间获取员工的空闲时间

1 个答案: