Sum up items between setup of custom times - tsql

Question

We need to count the number of items that occur 10 minutes before and 10 minutes after the hour, by day. We have a table that tracks the items individually. Ideally i would like to have the output be something like the below, but and totally open to other suggestions.
Table - Attendance
Att_item timestamp
1 2012-09-12 18:08:00
2 2012-09-01 23:26:00
3 2012-09-23 09:33:00
4 2012-09-11 09:43:00
5 2012-09-06 05:57:00
6 2012-09-17 19:26:00
7 2012-09-06 10:51:00
8 2012-09-19 09:42:00
9 2012-09-06 13:55:00
10 2012-09-05 07:26:00
11 2012-09-02 03:08:00
12 2012-09-19 12:17:00
13 2012-09-12 18:14:00
14 2012-09-12 18:14:00
Output
Date Timeslot_5pm Timeslot_6pm Timeslot_7pm
9/11/2012 11 22 22
9/12/2012 30 21 55
9/13/2012 44 33 44

Answer 1

Your requirements are not totally clear, but if you only want to count the number of records in the 20 minute window:
select cast(tstmp as date) date,
sum(case when datepart(hour, tstmp) = 1 then 1 else 0 end) Timeslot_1am,
sum(case when datepart(hour, tstmp) = 2 then 1 else 0 end) Timeslot_2am,
sum(case when datepart(hour, tstmp) = 3 then 1 else 0 end) Timeslot_3am,
sum(case when datepart(hour, tstmp) = 4 then 1 else 0 end) Timeslot_4am,
sum(case when datepart(hour, tstmp) = 5 then 1 else 0 end) Timeslot_5am,
sum(case when datepart(hour, tstmp) = 6 then 1 else 0 end) Timeslot_6am,
sum(case when datepart(hour, tstmp) = 7 then 1 else 0 end) Timeslot_7am,
sum(case when datepart(hour, tstmp) = 8 then 1 else 0 end) Timeslot_8am,
sum(case when datepart(hour, tstmp) = 9 then 1 else 0 end) Timeslot_9am,
sum(case when datepart(hour, tstmp) = 10 then 1 else 0 end) Timeslot_10am,
sum(case when datepart(hour, tstmp) = 11 then 1 else 0 end) Timeslot_11am,
sum(case when datepart(hour, tstmp) = 12 then 1 else 0 end) Timeslot_12pm,
sum(case when datepart(hour, tstmp) = 13 then 1 else 0 end) Timeslot_1pm,
sum(case when datepart(hour, tstmp) = 14 then 1 else 0 end) Timeslot_2pm,
sum(case when datepart(hour, tstmp) = 15 then 1 else 0 end) Timeslot_3pm,
sum(case when datepart(hour, tstmp) = 16 then 1 else 0 end) Timeslot_4pm,
sum(case when datepart(hour, tstmp) = 17 then 1 else 0 end) Timeslot_5pm,
sum(case when datepart(hour, tstmp) = 18 then 1 else 0 end) Timeslot_6pm,
sum(case when datepart(hour, tstmp) = 19 then 1 else 0 end) Timeslot_7pm,
sum(case when datepart(hour, tstmp) = 20 then 1 else 0 end) Timeslot_8pm,
sum(case when datepart(hour, tstmp) = 21 then 1 else 0 end) Timeslot_9pm,
sum(case when datepart(hour, tstmp) = 22 then 1 else 0 end) Timeslot_10pm,
sum(case when datepart(hour, tstmp) = 23 then 1 else 0 end) Timeslot_11pm
from yourtable
where datepart(minute, tstmp) >= 50
or datepart(minute, tstmp) <= 10
group by cast(tstmp as date)
If you want to count the number of records within each hour plus the records that are in the >=50 and <= 10 timeframe, then you will have to adjust this.

Answer 2

This does just one column (well 4 but you get my point).
select DATEPART(YYYY, FTSdate) as [year], DATEPART(mm, FTSdate) as [month]
, DATEPART(dd, FTSdate) as [day], DATEPART(hh, FTSdate) as [hour], COUNT(*)
from [Gabe2a].[dbo].[docSVsys]
where DATEPART(mi, FTSdate) >= 50 or DATEPART(mi, FTSdate) <= 10
group by DATEPART(YYYY, FTSdate), DATEPART(mm, FTSdate), DATEPART(dd, FTSdate), DATEPART(hh, FTSdate)
order by DATEPART(YYYY, FTSdate), DATEPART(mm, FTSdate), DATEPART(dd, FTSdate), DATEPART(hh, FTSdate)
Separate columns.
select DATEPART(YYYY, FTSdate) as [year], DATEPART(mm, FTSdate) as [month]
, DATEPART(dd, FTSdate) as [day]
, sum(case when DATEPART(hh, FTSdate) = '0' then 1 else 0 end) as [0:00] -- midnight
, sum(case when DATEPART(hh, FTSdate) = '1' then 1 else 0 end) as [1:00]
, sum(case when DATEPART(hh, FTSdate) = '2' then 1 else 0 end) as [2:00]
, sum(case when DATEPART(hh, FTSdate) = '3' then 1 else 0 end) as [3:00]
, sum(case when DATEPART(hh, FTSdate) = '4' then 1 else 0 end) as [4:00]
from [Gabe2a].[dbo].[docSVsys]
where DATEPART(mi, FTSdate) >= 50 or DATEPART(mi, FTSdate) <= 10
group by DATEPART(YYYY, FTSdate), DATEPART(mm, FTSdate), DATEPART(dd, FTSdate)
order by DATEPART(YYYY, FTSdate), DATEPART(mm, FTSdate), DATEPART(dd, FTSdate)