很难为我所需要的获得好的头衔。
它围绕着3张桌子,是一个预约系统,我需要得到每一位医生/护士的名单,以及他们免费的时段。
我不想像下面的第一个sql那样使用UNION,这意味着我必须声明每个医生的名字,而我不想这样做。
桌子..。
UserDetails:
ID Role Surname Clinic
1 Doctor House 1
2 Doctor Bob 1
3 Nurse Smith 1
4 Doctor Jim 2
5 Nurse Grant 2
6 Patient Billy 1
7 Patient Jones 1
TimeSlots:
ID TimeSlot
1 10:00
2 10:30
3 11:00
4 11:30
11 16:30
12 17:00
任命:
ID StaffID PatientID TimeSlot AppDate
1 1 6 1 today
2 1 7 3 today
3 2 6 2 today
4 1 6 4 tomorrow
(StaffID和PatientID,是用户表的外键ID )我需要一个查询,它输出每个时隙和医生/护士,以便他们今天没有预约(或基于“AppDate”的任何一天)
我可以为特定的医生/护士这样做:
SELECT TimeSlots.TimeSlot, Users.Role, Users.Surname, Users.Clinic
FROM TimeSlots, Users
WHERE
TimeSlots.ID NOT IN
(SELECT Appointments.TimeSlot
FROM Appointments
INNER JOIN Users
ON Appointments.MedicalStaffID = Users.ID
WHERE AppDate = CONVERT(DATE,GETDATE()) AND Users.Surname = 'House')
AND
Users.Surname = 'House'
ORDER BY TimeSlots.TimeSlot;
这给了我:
TimeSlot Role Surname Clinic
10:30 Doctor House 1
11:30 Doctor House 1
16:30 Doctor House 1
17:00 Doctor House 1
这很好,但是我需要一个查询来显示给所有的医生/护士,所以我有:
TimeSlot Role Surname Clinic
10:30 Doctor House 1
11:30 Doctor House 1
16:30 Doctor House 1
17:00 Doctor House 1
10:00 Doctor Bob 1
11:00 Doctor Bob 1
11:30 Doctor Bob 1
16:30 Doctor Bob 1
17:00 Doctor Bob 1
因此,它也可以按时间排序。
我一开始试着用:
SELECT TimeSlots.TimeSlot, Users.Role, Users.Surname, Users.Clinic
FROM TimeSlots, Users
WHERE
TimeSlots.ID NOT IN (SELECT TimeSlot FROM Appointments WHERE AppDate = GETDATE() AND (Users.Clinic = 'Werrington') AND (Users.Role = 'Doctor' OR Users.Role = 'Nurse'))
AND
(Users.Role = 'Doctor' OR Users.Role = 'Nurse')
AND
(Users.Clinic = 'Werrington')
ORDER BY TimeSlots.TimeSlot;
但这只是输出每一个医生与每一个时隙
另外,我觉得有一种更好的方法来构造结果表的外观,我想不出是怎么回事。
发布于 2015-05-07 19:07:58
如果我正确地理解了这个问题,这会给你你想要的.
SET NOCOUNT ON;
DECLARE @UserDetails TABLE (
ID int,
Role varchar(50),
Surname varchar(50),
Clinic int )
INSERT @UserDetails VALUES (1, 'Doctor', 'House', 1)
INSERT @UserDetails VALUES (2, 'Doctor', 'Bob', 1)
INSERT @UserDetails VALUES (3, 'Nurse', 'Smith', 1)
INSERT @UserDetails VALUES (4, 'Doctor', 'Jim', 2)
INSERT @UserDetails VALUES (5, 'Nurse', 'Grant', 2 )
INSERT @UserDetails VALUES (6, 'Patient', 'Billy', 1)
INSERT @UserDetails VALUES (7, 'Patient', 'Jones', 1)
DECLARE @TimeSlots TABLE (
ID int,
TimeSlot varchar(50) )
INSERT @TimeSlots VALUES (1 , '10:00' )
INSERT @TimeSlots VALUES (2 , '10:30' )
INSERT @TimeSlots VALUES (3 , '11:00' )
INSERT @TimeSlots VALUES (4 , '11:30' )
INSERT @TimeSlots VALUES (11, '16:30' )
INSERT @TimeSlots VALUES (12, '17:00' )
DECLARE @Appointments TABLE (
ID int,
StaffID int,
PatientID int,
TimeSlotID int,
AppDate varchar(50) )
INSERT @Appointments VALUES (1, 1, 6, 1, 'today' )
INSERT @Appointments VALUES (2, 1, 7, 3, 'today' )
INSERT @Appointments VALUES (3, 2, 6, 2, 'today' )
INSERT @Appointments VALUES (4, 1, 6, 4, 'tomorrow' )
SET NOCOUNT OFF;
WITH CompleteSchedule AS (
SELECT UD.ID as UserID, UD.Role, UD.Surname, UD.Clinic, TS.ID as TimeSlotID, TS.TimeSlot
FROM @UserDetails UD
CROSS JOIN @TimeSlots TS
)
SELECT CS.*
FROM CompleteSchedule CS
LEFT JOIN @Appointments A ON A.StaffID = CS.UserID AND A.TimeSlotID = CS.TimeSlotID AND A.AppDate = 'today'
WHERE A.ID is null
ORDER BY CS.UserID, CS.TimeSlotID
CTE将生成每名工作人员X的“表”,每一个时隙。然后你就离开了,在指定的一天里加入你的任命。没有约会ID的任何结果行都是打开的时隙。
https://stackoverflow.com/questions/30109033
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