Pivot 时间间隔成矩阵

Question

How can I pivot a start, end, start break, and end break times into a matrix that looks like the below? Ideally, I'd like to accomplish this in SQL Server.

Essentially, I'm trying to visualize a timesheet (start time, end time, start break, end break), and pivot across the day (broken down by 15-minute increments) as 1 or 0.

Start Time	End Time	Break Start	Break Start	0:00	0:15	0:30	0:45	1:00	1:15	1:30	1:45	2:00	2:15
0:15	2:00	0:45	1:15	0	1	1	0	0	1	1	1	0	0

Answer 1

Assuming you have an ID or unique identifier for each timesheet record, and assuming all your timesheet entries use only Time, and not Datetime, this will work.

DROP TABLE IF EXISTS #Timesheets
GO
CREATE TABLE #Timesheets(ID INT, StartTime TIME, EndTime TIME, BreakStart TIME, Breakend TIME)
INSERT INTO #Timesheets(ID, StartTime,EndTime,BreakStart,Breakend)
VALUES
(1,'00:15','02:00','00:45','01:15'),
(2,'08:00','17:00','12:00','13:00')
DECLARE @StartTime TIME = '00:00'
DECLARE @EndTime TIME = DATEADD(mi,1425,@StartTime)


;WITH TimePeriods AS 
(
  SELECT @StartTime AS StartTime,DATEADD(mi,15,@StartTime) AS EndTime, CONVERT(VARCHAR(5),@StartTime,108) AS TimePeriod 
  UNION ALL 
  SELECT DATEADD(mi,15,StartTime),DATEADD(mi,30,StartTime), CONVERT(VARCHAR(5),DATEADD(mi,15,StartTime),108) FROM TimePeriods
  WHERE StartTime < @EndTime
)
--select string_agg(QUOTENAME(TimePeriod),',') from TimePeriods

,TimeSheetPerPeriod AS
(
SELECT 
tp.TimePeriod,
ts.*,
CASE WHEN ts.ID IS NULL THEN 0 ELSE 1 END AS Active
FROM TimePeriods tp
JOIN #Timesheets ts ON tp.StartTime BETWEEN ts.StartTime AND ts.EndTime
AND tp.StartTime NOT BETWEEN ts.BreakStart AND ts.Breakend
)

SELECT 
id,StartTime,EndTime,BreakStart,Breakend
,[00:00],[00:15],[00:30],[00:45],[01:00],[01:15],[01:30],[01:45],[02:00],[02:15],[02:30],[02:45],[03:00],[03:15],[03:30],[03:45],[04:00],[04:15],[04:30],[04:45],[05:00],[05:15],[05:30],[05:45],[06:00],[06:15],[06:30],[06:45],[07:00],[07:15],[07:30],[07:45],[08:00],[08:15],[08:30],[08:45],[09:00],[09:15],[09:30],[09:45],[10:00],[10:15],[10:30],[10:45],[11:00],[11:15],[11:30],[11:45],[12:00],[12:15],[12:30],[12:45],[13:00],[13:15],[13:30],[13:45],[14:00],[14:15],[14:30],[14:45],[15:00],[15:15],[15:30],[15:45],[16:00],[16:15],[16:30],[16:45],[17:00],[17:15],[17:30],[17:45],[18:00],[18:15],[18:30],[18:45],[19:00],[19:15],[19:30],[19:45],[20:00],[20:15],[20:30],[20:45],[21:00],[21:15],[21:30],[21:45],[22:00],[22:15],[22:30],[22:45],[23:00],[23:15],[23:30],[23:45]
FROM
(
SELECT * 
FROM TimeSheetPerPeriod
) AS SourceTable
PIVOT
(
MAX(Active)
FOR TimePeriod IN ([00:00],[00:15],[00:30],[00:45],[01:00],[01:15],[01:30],[01:45],[02:00],[02:15],[02:30],[02:45],[03:00],[03:15],[03:30],[03:45],[04:00],[04:15],[04:30],[04:45],[05:00],[05:15],[05:30],[05:45],[06:00],[06:15],[06:30],[06:45],[07:00],[07:15],[07:30],[07:45],[08:00],[08:15],[08:30],[08:45],[09:00],[09:15],[09:30],[09:45],[10:00],[10:15],[10:30],[10:45],[11:00],[11:15],[11:30],[11:45],[12:00],[12:15],[12:30],[12:45],[13:00],[13:15],[13:30],[13:45],[14:00],[14:15],[14:30],[14:45],[15:00],[15:15],[15:30],[15:45],[16:00],[16:15],[16:30],[16:45],[17:00],[17:15],[17:30],[17:45],[18:00],[18:15],[18:30],[18:45],[19:00],[19:15],[19:30],[19:45],[20:00],[20:15],[20:30],[20:45],[21:00],[21:15],[21:30],[21:45],[22:00],[22:15],[22:30],[22:45],[23:00],[23:15],[23:30],[23:45]) 
) AS PivotTable