问题
I'm building up a website where you can take an appointement online. I'll not explain all in detail but I have an table with my available time to take an appointment. Distributed into intervals of 5 min. Here's an example:
ID StartDate EndDate
492548 2016-12-16 08:00:00.000 2016-12-16 08:05:00.000
492549 2016-12-16 08:05:00.000 2016-12-16 08:10:00.000
492550 2016-12-16 08:10:00.000 2016-12-16 08:15:00.000
492551 2016-12-16 08:15:00.000 2016-12-16 08:20:00.000
492552 2016-12-16 08:20:00.000 2016-12-16 08:25:00.000
492553 2016-12-16 08:25:00.000 2016-12-16 08:30:00.000
492554 2016-12-16 08:30:00.000 2016-12-16 08:35:00.000
492555 2016-12-16 08:35:00.000 2016-12-16 08:40:00.000
492556 2016-12-16 08:40:00.000 2016-12-16 08:45:00.000
492557 2016-12-16 08:45:00.000 2016-12-16 08:50:00.000
492558 2016-12-16 08:50:00.000 2016-12-16 08:55:00.000
492559 2016-12-16 08:55:00.000 2016-12-16 09:00:00.000
492560 2016-12-16 09:00:00.000 2016-12-16 09:05:00.000
492561 2016-12-16 09:05:00.000 2016-12-16 09:10:00.000
492562 2016-12-16 09:10:00.000 2016-12-16 09:15:00.000
492563 2016-12-16 09:15:00.000 2016-12-16 09:20:00.000
492564 2016-12-16 09:20:00.000 2016-12-16 09:25:00.000
492565 2016-12-16 09:25:00.000 2016-12-16 09:30:00.000
492566 2016-12-16 09:30:00.000 2016-12-16 09:35:00.000
Depending the consultation time, based in the reason for consultation, I have to group these rows into one and know the min(IDSchedulingInterval) and the max(IDSchedulingInterval).
Here's an example of the result I want if I have a duration time of 15 min:
Min(ID) Max(ID) StartDate EndDate
492548 492550 2016-12-16 08:00:00.000 2016-12-16 08:15:00.000
492551 492553 2016-12-16 08:15:00.000 2016-12-16 08:30:00.000
492554 492556 2016-12-16 08:30:00.000 2016-12-16 08:45:00.000
492557 492559 2016-12-16 08:45:00.000 2016-12-16 09:00:00.000
The duration time can change. I don't know how to proceed to make this query..
EDIT Here are some exception you have to check. Here's my table
ID StartDate EndDate Isreserved
492548 2016-12-16 08:00:00.000 2016-12-16 08:05:00.000 0
492549 2016-12-16 08:05:00.000 2016-12-16 08:10:00.000 0
492550 2016-12-16 08:10:00.000 2016-12-16 08:15:00.000 0
492551 2016-12-16 08:15:00.000 2016-12-16 08:20:00.000 0
492552 2016-12-16 08:20:00.000 2016-12-16 08:25:00.000 0
492555 2016-12-16 08:35:00.000 2016-12-16 08:40:00.000 0
492556 2016-12-16 08:40:00.000 2016-12-16 08:45:00.000 0
492557 2016-12-16 08:45:00.000 2016-12-16 08:50:00.000 1
492558 2016-12-16 08:50:00.000 2016-12-16 08:55:00.000 1
492559 2016-12-16 08:55:00.000 2016-12-16 09:00:00.000 1
492560 2016-12-16 09:00:00.000 2016-12-16 09:05:00.000 0
492561 2016-12-16 09:05:00.000 2016-12-16 09:10:00.000 0
492562 2016-12-16 09:10:00.000 2016-12-16 09:15:00.000 0
492563 2016-12-16 09:15:00.000 2016-12-16 09:20:00.000 0
492564 2016-12-16 09:20:00.000 2016-12-16 09:25:00.000 0
492565 2016-12-16 09:25:00.000 2016-12-16 09:30:00.000 0
492566 2016-12-16 09:30:00.000 2016-12-16 09:35:00.000 0
Here the time between 8:45 to 9:00 is reserved so you can't take it. Also you don't have time between 8:25 and 8:35 so you can't reserved it either. An example, if I want to take a appointment of 30 min then I should have a result like this one:
Min(ID) Max(ID) StartDate EndDate
492560 492565 2016-12-16 09:00:00.000 2016-12-16 09:30:00.000
Only 1 row will be returned because you don't have enough time between other intervals
EDIT 2
Thanks to DVT I have modified is query and i'm almost having my query work the only hic here is the overlapping time. here's my query:
DECLARE @newinterval INT = 60;
;with cte as (
SELECT
t1.IdSchedulingByInterval AS IdSchedulingByIntervalMin
, t2.IdSchedulingByInterval AS IdSchedulingByIntervalMax
, t1.SchedulingByIntervalStartDate
, t2.SchedulingByIntervalEndDate
FROM
RDV_tbSchedulingByInterval t1
JOIN RDV_tbSchedulingByInterval t2 ON t2.SchedulingByIntervalStartDate = DATEADD(minute, @newinterval - 5, t1.SchedulingByIntervalStartDate)
) select * from cte where (select SUM(5) from RDV_tbSchedulingByInterval where IdSchedulingByInterval
between cte.IdSchedulingByIntervalMin and cte.IdSchedulingByIntervalMax ) = @newinterval
order by cte.SchedulingByIntervalStartDate
Here's my result:
492551 492562 2016-12-16 08:15:00.000 2016-12-16 09:15:00.000
492552 492563 2016-12-16 08:20:00.000 2016-12-16 09:20:00.000
492553 492564 2016-12-16 08:25:00.000 2016-12-16 09:25:00.000
492554 492565 2016-12-16 08:30:00.000 2016-12-16 09:30:00.000
492555 492566 2016-12-16 08:35:00.000 2016-12-16 09:35:00.000
492556 492567 2016-12-16 08:40:00.000 2016-12-16 09:40:00.000
492557 492568 2016-12-16 08:45:00.000 2016-12-16 09:45:00.000
492558 492569 2016-12-16 08:50:00.000 2016-12-16 09:50:00.000
492559 492570 2016-12-16 08:55:00.000 2016-12-16 09:55:00.000
492560 492571 2016-12-16 09:00:00.000 2016-12-16 10:00:00.000
492561 492572 2016-12-16 09:05:00.000 2016-12-16 10:05:00.000
492562 492573 2016-12-16 09:10:00.000 2016-12-16 10:10:00.000
492563 492574 2016-12-16 09:15:00.000 2016-12-16 10:15:00.000
492564 492575 2016-12-16 09:20:00.000 2016-12-16 10:20:00.000
492565 492576 2016-12-16 09:25:00.000 2016-12-16 10:25:00.000
492566 492577 2016-12-16 09:30:00.000 2016-12-16 10:30:00.000
492567 492578 2016-12-16 09:35:00.000 2016-12-16 10:35:00.000
492568 492579 2016-12-16 09:40:00.000 2016-12-16 10:40:00.000
492569 492580 2016-12-16 09:45:00.000 2016-12-16 10:45:00.000
Expected result:
492551 492562 2016-12-16 08:15:00.000 2016-12-16 09:15:00.000
492563 492574 2016-12-16 09:15:00.000 2016-12-16 10:15:00.000
I don't want time to overlapped other
回答1:
-- This converts the period to date-time format
SELECT
-- note the 15, the "minute", and the starting point to convert the
-- period back to original time
DATEADD(minute, AP.FifteenMinutePeriod * 15, '2010-01-01T00:00:00') AS Period,
AP.AvgValue
FROM
-- this groups by the period and gets the average
(SELECT
P.FifteenMinutePeriod,
AVG(P.Value) AS AvgValue
FROM
-- This calculates the period (fifteen minutes in this instance)
(SELECT
-- note the division by 15 and the "minute" to build the 15 minute periods
-- the '2010-01-01T00:00:00' is the starting point for the periods
datediff(minute, '2010-01-01T00:00:00', T.Time)/15 AS FifteenMinutePeriod,
T.Value
FROM Test T) AS P
GROUP BY P.FifteenMinutePeriod) AP
回答2:
This handles a variable minute interval. Note this hasn't been performance tested:
DECLARE @MinuteInterval INT = 15
SELECT MIN(a.IdSchedulingByInterval) AS MinId,
MAX(aa.IdSchedulingByInterval) AS MaxId,
MIN(a.SchedulingByIntervalStartDate) AS StartDate,
MAX(aa.SchedulingByIntervalEndDate) AS EndDate
FROM Appointment a
CROSS JOIN Appointment aa
WHERE DATEDIFF(MINUTE, a.SchedulingByIntervalStartDate, aa.SchedulingByIntervalEndDate) = @MinuteInterval
GROUP BY a.IdSchedulingByInterval
HAVING DATEPART(MINUTE, MIN(a.SchedulingByIntervalStartDate)) % @MinuteInterval = 0
回答3:
I think you can use a query like the following:
SELECT MIN(ID) AS minID, MAX(ID) AS maxID,
MIN(StartDate) AS StartDate, MAX(EndDate) AS EndDate
FROM (
SELECT ID, StartDate, EndDate,
ROW_NUMBER() OVER (ORDER BY StartDate) -
ROW_NUMBER() OVER (PARTITION BY x.v
ORDER BY StartDate) AS grp
FROM mytable
CROSS APPLY (SELECT CAST(CONVERT(DATE, EndDate) AS VARCHAR(10)) +
CAST(DATEPART(HOUR, StartDate) AS VARCHAR(10)) +
CAST(DATEPART(MINUTE, StartDate) / 15 AS VARCHAR(10))) AS x(v)) AS t
GROUP BY t.grp
ORDER BY EndDate
回答4:
As your session duration can change, here is a slightly more flexible approach:
declare @t table (IDSchedulingByInterval int identity(1,1)
,SchedulingByIntervalStartDate datetime
,SchedulingByIntervalEndDate datetime
);
insert into @t(SchedulingByIntervalStartDate, SchedulingByIntervalEndDate)
values('2016-12-16 08:00:00.000','2016-12-16 08:05:00.000'),('2016-12-16 08:05:00.000','2016-12-16 08:10:00.000'),('2016-12-16 08:10:00.000','2016-12-16 08:15:00.000'),('2016-12-16 08:15:00.000','2016-12-16 08:20:00.000'),('2016-12-16 08:20:00.000','2016-12-16 08:25:00.000'),('2016-12-16 08:25:00.000','2016-12-16 08:30:00.000'),('2016-12-16 08:30:00.000','2016-12-16 08:35:00.000'),('2016-12-16 08:35:00.000','2016-12-16 08:40:00.000'),('2016-12-16 08:40:00.000','2016-12-16 08:45:00.000'),('2016-12-16 08:45:00.000','2016-12-16 08:50:00.000'),('2016-12-16 08:50:00.000','2016-12-16 08:55:00.000'),('2016-12-16 08:55:00.000','2016-12-16 09:00:00.000'),('2016-12-16 09:00:00.000','2016-12-16 09:05:00.000'),('2016-12-16 09:05:00.000','2016-12-16 09:10:00.000'),('2016-12-16 09:10:00.000','2016-12-16 09:15:00.000'),('2016-12-16 09:15:00.000','2016-12-16 09:20:00.000'),('2016-12-16 09:20:00.000','2016-12-16 09:25:00.000'),('2016-12-16 09:25:00.000','2016-12-16 09:30:00.000'),('2016-12-16 09:30:00.000','2016-12-16 09:35:00.000'),('2016-12-16 09:35:00.000','2016-12-16 09:40:00.000'),('2016-12-16 09:40:00.000','2016-12-16 09:45:00.000'),('2016-12-16 09:45:00.000','2016-12-16 09:50:00.000'),('2016-12-16 09:50:00.000','2016-12-16 09:55:00.000'),('2016-12-16 09:55:00.000','2016-12-16 10:00:00.000');
declare @Interval int = 15; -- This is the number of minutes for each session. Must be divisible by 5 as base data is at a 5 minute granualarity.
select s.IDSchedulingByInterval as MinIDSchedulingByInterval
,e.IDSchedulingByInterval as MaxIDSchedulingByInterval
,s.SchedulingByIntervalStartDate
,e.SchedulingByIntervalEndDate
from @t s
left join @t e -- Find the corresponding end time for the session's start time
on(dateadd(minute,@Interval,s.SchedulingByIntervalStartDate) = e.SchedulingByIntervalEndDate)
where datediff(minute
,(select min(SchedulingByIntervalStartDate) from @t)
,s.SchedulingByIntervalStartDate
) % @Interval = 0; -- This is the check that start time is at the start of one of your defined intervals.
Updated to include logic for unavailable periods:
declare @t table (IDSchedulingByInterval int identity(1,1)
,SchedulingByIntervalStartDate datetime
,SchedulingByIntervalEndDate datetime
,Reserved bit
);
insert into @t(SchedulingByIntervalStartDate, SchedulingByIntervalEndDate,Reserved)
values('2016-12-16 08:00:00.000','2016-12-16 08:05:00.000',0),('2016-12-16 08:05:00.000','2016-12-16 08:10:00.000',0),('2016-12-16 08:10:00.000','2016-12-16 08:15:00.000',0),('2016-12-16 08:15:00.000','2016-12-16 08:20:00.000',0),('2016-12-16 08:20:00.000','2016-12-16 08:25:00.000',0),('2016-12-16 08:25:00.000','2016-12-16 08:30:00.000',0),('2016-12-16 08:30:00.000','2016-12-16 08:35:00.000',0),('2016-12-16 08:35:00.000','2016-12-16 08:40:00.000',0),('2016-12-16 08:40:00.000','2016-12-16 08:45:00.000',0),('2016-12-16 08:45:00.000','2016-12-16 08:50:00.000',1),('2016-12-16 08:50:00.000','2016-12-16 08:55:00.000',1),('2016-12-16 08:55:00.000','2016-12-16 09:00:00.000',1),('2016-12-16 09:00:00.000','2016-12-16 09:05:00.000',0),('2016-12-16 09:05:00.000','2016-12-16 09:10:00.000',0),('2016-12-16 09:10:00.000','2016-12-16 09:15:00.000',0),('2016-12-16 09:15:00.000','2016-12-16 09:20:00.000',0),('2016-12-16 09:20:00.000','2016-12-16 09:25:00.000',0),('2016-12-16 09:25:00.000','2016-12-16 09:30:00.000',0),('2016-12-16 09:30:00.000','2016-12-16 09:35:00.000',0),('2016-12-16 09:35:00.000','2016-12-16 09:40:00.000',0),('2016-12-16 09:40:00.000','2016-12-16 09:45:00.000',0),('2016-12-16 09:45:00.000','2016-12-16 09:50:00.000',0),('2016-12-16 09:50:00.000','2016-12-16 09:55:00.000',0),('2016-12-16 09:55:00.000','2016-12-16 10:00:00.000',0);
declare @Interval int = 60; -- This is the number of minutes for each session. Must be divisible by 5 as base data is at a 5 minute granualarity.
with cte
as
(
select s.IDSchedulingByInterval as MinIDSchedulingByInterval
,e.IDSchedulingByInterval as MaxIDSchedulingByInterval
,s.SchedulingByIntervalStartDate
,e.SchedulingByIntervalEndDate
from @t s
left join @t e -- Find the corresponding end time for the session's start time
on(dateadd(minute,@Interval,s.SchedulingByIntervalStartDate) = e.SchedulingByIntervalEndDate)
where datediff(minute
,(select min(SchedulingByIntervalStartDate) from @t)
,s.SchedulingByIntervalStartDate
) % @Interval = 0 -- This is the check that start time is at the start of one of your defined intervals.
)
select c.MinIDSchedulingByInterval
,c.MaxIDSchedulingByInterval
,c.SchedulingByIntervalStartDate
,c.SchedulingByIntervalEndDate
from cte c
left join @t t
on(t.SchedulingByIntervalStartDate <= c.SchedulingByIntervalEndDate
and t.SchedulingByIntervalEndDate > c.SchedulingByIntervalStartDate
)
group by c.MinIDSchedulingByInterval
,c.MaxIDSchedulingByInterval
,c.SchedulingByIntervalStartDate
,c.SchedulingByIntervalEndDate
having sum(cast(t.Reserved as int)) = 0
回答5:
This is the easiest i could come up with without more specifics
;WITH Tally AS
(
SELECT ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS N FROM master.sys.objects A, master.sys.objects B
)
,Intervals AS
(
SELECT
N AS Id,
DATEADD(MINUTE, (N-1)*5, '20160101') AS StartDate,
DATEADD(MINUTE, (N)*5, '20160101') AS EndDate
FROM Tally
)
SELECT MIN(Id) AS MinId, MAX(Id) AS MaxId, MIN(StartDate), MAX(EndDate) FROM Intervals
GROUP BY CAST(StartDate AS Date), DATEPART(HOUR,StartDate), DATEPART(MINUTE, StartDate) / 15
ORDER BY MinId
EDIT:
Just replace the names with your table like
SELECT
MIN(IdSchedulingByInterval) AS MinId,
MAX(IdSchedulingByInterval) AS MaxId,
MIN(SchedulingByIntervalStartDate), ¨
MAX(SchedulingByIntervalEndDate)
FROM RDV_tbSchedulingByInterval
GROUP BY CAST(SchedulingByIntervalStartDate AS Date), DATEPART(HOUR,SchedulingByIntervalStartDate), DATEPART(MINUTE, SchedulingByIntervalStartDate) / 15
ORDER BY MinId
回答6:
The simplest query I can think of..
select MIN(ID), MAX(ID), MIN(StartDate), MAX(EndDate)
from
(
select
ID,
case
when substring(CONVERT(varchar, StartDate),16,2)in ('00','05','10') then 1
when substring(CONVERT(varchar, StartDate),16,2)in ('15','20','25') then 2
when substring(CONVERT(varchar, StartDate),16,2)in ('30','35','40') then 3
when substring(CONVERT(varchar, StartDate),16,2)in ('45','50','55') then 4
end as MinOfDate,
substring(CONVERT(varchar, StartDate),13,2)as HourOfDate,
substring(CONVERT(varchar, GETDATE()),1,6) as DayOfDate
StartDate,
EndDate
from SourceTable
where IsReserved = 0
) t
group by DayOfDate,HourOfDate,MinOfDate
回答7:
DECLARE @newinterval INT = 15;
SELECT
t1.IdSchedulingByInterval AS IdSchedulingByIntervalMin
, t2.IdSchedulingByInterval AS IdSchedulingByIntervalMax
, t1.SchedulingByIntervalStartDate
, t2.SchedulingByIntervalEndDate
FROM
<table> t1
JOIN <table> t2 ON t2.SchedulingByIntervalStartDate = DATEADD(minute, @newinterval - 5, t1.SchedulingByIntervalStartDate)
WHERE
DATEPART(minute,t1.SchedulingByIntervalStartDate) % @newinterval = 0;
来源：https://stackoverflow.com/questions/41223702/sql-server-how-to-regroup-interval-of-5-minute-into-1-of-15-minute