Sum the Attendance Hours by Category and then Group by 'Week of'

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Sum the Attendance Hours by Category and then Group by 'Week of'

Rick44

Mr or Mrs. 500

Points: 564
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July 25, 2013 at 4:30 pm

#395204

Hi all. I need to sum the attendance hours by category and then group by 'Week of'. The 'Week of' start date is defined by the Monday in that week but Sunday is works too. If the Category Values are in ’Art’ or ‘PE’, they need to be combined into Non Educational. I also need to be able to flag the day(s) a student reaches 120 hours.
CREATE TABLE Attendance (
ID int,
Category varchar(20),
Title varchar(20),
Date datetime,
Hours int,
)
INSERT INTO Attendance VALUES
(4504498, 'GED Program', '7/1/2012', 7),
(4504498, 'GED Program', '7/2/2012', 3),
(4504498, 'GED Program', '7/3/2012', 3),
(4504498, 'GED Program', '7/4/2012', 7),
(4504498, 'GED Program', '7/5/2012', 3),
(4504498, 'GED Program', '7/8/2012', 3),
(4504498, 'GED Program', '7/9/2012', 7),
(4504498, 'GED Program', '7/10/2012',7),
(4504498, 'GED Program', '7/11/2012',3),
(4504498, 'GED Program', '7/12/2012',3),
(4504498, 'High School', '7/1/2012', 7),
(4504498, 'High School', '7/2/2012', 3),
(4504498, 'High School', '7/3/2012', 3),
(4504498, 'High School', '7/4/2012', 3),
(4504498, 'High School', '7/5/2012', 3),
(4504498, 'High School', '7/8/2012', 7),
(4504498, 'High School', '7/9/2012', 3),
(4504498, 'High School', '7/10/2012',8),
(4504498, 'High School', '7/11/2012',3),
(4504498, 'High School', '7/12/2012',7),
(9201052, 'Art', '7/15/2012', 6),
(9201052, 'Art', '7/16/2012', 3),
(9201052, 'Art', '7/17/2012', 7),
(9201052, 'PE', '7/17/2012', 7),
(9201052, 'PE', '7/18/2012', 7)
I need an end result which looks like this:
ID Category Week of Total Hours
4504498 GED Program 7/1/2012 26
4504498 GED Program 7/8/2012 23
4504498 High School 7/1/2012 19
4504498 High School 7/8/2012 28
9201052 Non Educational 7/15/2012 30
ID Day_120_Hours_Reached
356485 6/30/2012
356485 11/15/2012
555666 10/12/2012
555666 2/25/2013
I have been looking for examples of a Week function that will pull out the 'week of' from a date using MS Sql Server and I can't find much info. Any feedback is appreciated.

Viewing 6 posts - 1 through 5 (of 5 total)

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Luis Cazares SSC Guru Points: 183698 More actions · Answer 1

Have you tried to use DATEPART(wk, Date)?

What have you tried?

Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?

How to post data/code on a forum to get the best help: Option 1 / Option 2

Rick44 Mr or Mrs. 500 Points: 564 More actions · Answer 2

I have tried datepart(wk, Date). It groups by week (datepart(wk, Date)) and then displays the first entry of that week, not the first day in the week, necessarily

select DOP_ID,

(First_Name + ' ' + Last_Name) as Name,

Category,

min(Date) as WeekOf,

sum(Hours) as TotalHours

FROM [GW_PPP].[dbo].[SLAM_Attendence]

where DOP_ID in (select DOP_ID from [GW_PPP].[dbo].[SLAM_Status] where STATUS ='Enrolled')

and Category in ('GED Program', 'Lit/Num Combined (Pre-GED)')

group by DOP_ID,Category, datepart(wk, Date)

Luis Cazares SSC Guru Points: 183698 More actions · Answer 3

I misread a part of your original post and became more clear now.

You could use DATEADD(wk, DATEDIFF(wk,0,Date), 0) to get the first day of the week and be able to group them.

Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?

How to post data/code on a forum to get the best help: Option 1 / Option 2

Luis Cazares SSC Guru Points: 183698 More actions · Answer 4

This works for me.

SELECT ID,

CASE WHEN Category IN( 'Art', 'PE') THEN 'Non Educational' ELSE Category END Category,

DATEADD( dd, -1, DATEADD(wk, DATEDIFF(wk,0,Date), 0)) Week,

SUM(Hours) Total_Hours

FROM Attendance

GROUP BY ID,

CASE WHEN Category IN( 'Art', 'PE') THEN 'Non Educational' ELSE Category END ,

DATEADD( dd, -1, DATEADD(wk, DATEDIFF(wk,0,Date), 0))

However, I'm not sure about your second requirement. It seems that you might need a running total calculation. For information on this article Solving the Running Total and Ordinal Rank Problems[/url]

Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?

How to post data/code on a forum to get the best help: Option 1 / Option 2

Rick44 Mr or Mrs. 500 Points: 564 More actions · Answer 5

Hi. The above is great, Thanks! Just want I need. Below was the original example code I was working off of to try and get the 2nd requirement (with the sum at 60 instead of 120, so one student reaches it, using the sample dataset.). I am having trouble modifying it to get it to work.

select ID

, Category

, min(Date) as WeekOf

, sum(Hours) as TotalHours

from Attendance

group by

ID

, Category

, datepart(wk, Date);

select ID

, min(Date)

from (

select ID

, Date

, sum(Hours) over (partition by ID order by Date) RunningSum

, Hours

from Attendance

) as SubQueryAlias

where RunningSum >= 60

group by

ID;