Want to Calculate Business Working hours

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Want to Calculate Business Working hours

venkatesh-MSBI

Mr or Mrs. 500

Points: 522
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November 8, 2007 at 12:33 am

#76815

hi Everyone,
I have one query, i want to calculate the business working hours (like from monday to friday 9 to 5 pm and saturday 9 to 2 pm) for the given 2 dates. And also i want to eliminate the public holidays with in the given dates.
If any one was faced the same situation plz help me.
Regards
Venki

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SwePeso SSC-Dedicated Points: 39757 More actions · Answer 1

I think there already are about 15 zillion postings about this exact problem.

Try to search this forum for similar requests and see what you get?

N 56°04'39.16"
E 12°55'05.25"

venkatesh-MSBI Mr or Mrs. 500 Points: 522 More actions · Answer 2

i got one example, but it is useful only for calculating the number of working days.

url is: http://weblogs.sqlteam.com/brettk/archive/2005/05/12/5139.aspx

If anyone knows my query plz respond me.

Its very urgent.

Kenneth Wilhelmsson SSC-Dedicated Points: 30043 More actions · Answer 3

You may find your way to your answers here:

http://sqlserver2000.databases.aspfaq.com/why-should-i-consider-using-an-auxiliary-calendar-table.html

/Kenneth

Matt Miller (4) SSC Guru Points: 124210 More actions · Answer 4

well - let's get some specifics before we go diving into weeks and weeks of back and forth (well - probably will happen anyway.....:D)

Jeff Moden took a running start at whole days in a recent article. [/url]

- What do you plan on passing in? Are we dealing with specific work time starts and stops (e.g. 9/1/07 10:20am to 10/15/07 1:55pm) or full days? Are they passed in combined, or separated? (e.g. Start datetime, end datetime vs start date, start time, end date, end time)

- what - no lunch breaks?

- where are you storing your holidays?

----------------------------------------------------------------------------------
Your lack of planning does not constitute an emergency on my part...unless you're my manager...or a director and above...or a really loud-spoken end-user..All right - what was my emergency again?

venkatesh-MSBI Mr or Mrs. 500 Points: 522 More actions · Answer 5

We are storing holidays list in seperate table. And also storing the Business hours in that table.

We are storing the data in datetime format. I want to calculate the hours and minutes in between the passed dates(datetime format).

Give me solution Plz

Thanks & Regards

Venki

Kenneth Wilhelmsson SSC-Dedicated Points: 30043 More actions · Answer 6

Ok, could you then please give an example on what this table of yours look like?

A few rows of sample data and the expected output you need from that data.

/Kenneth

venkatesh-MSBI Mr or Mrs. 500 Points: 522 More actions · Answer 7

For this i am using 2 tables i.e., Holidays and WorkingHours. We are storing only holidays dates in holidays table. in working hours table 3 columns were there i.e., weekday, starting time, closing time.

we are storing the values like from monday to friday 9 am to 5 pm and for saturday 9 am to 1 pm.

thanks & regards

Venki

Mohammad Mazharuddin Ehsan SSCarpal Tunnel Points: 4552 More actions · Answer 8

Hi Venki,

Here is the answer to your problem.

http://www.sqlservercentral.com/scripts/Scalar-valued+Functions/61567/

As I understand from your description, you need to do the following modifications to get what you exactly need.

1. The function CalcTimeSinceCreated will have to be modified to take two parameters case as 'task beginning date&time' and 'task ending date&time', instead of one at present

2. I am hardcoding the working hours and weekdays in the functions. You need to modify it to take this information from 2 tables i.e., Holidays and WorkingHours.

If you provide me the exact structure of your two tables and a few rows of the sample data then I may help you in the above two tasks.

Regards,

Mazharuddin

-----------------------------------------------------------[font=Arial Black]Time Is Money[/font][font=Arial Narrow]Calculating the Number of Business Hours Passed since a Point of Time[/url][/font][font=Arial Narrow]Calculating the Number of Business Hours Passed Between Two Points of Time[/font]

venkatesh-MSBI Mr or Mrs. 500 Points: 522 More actions · Answer 9

HI Mazharuddin

I AM VERY MUCH THANKFUL TO YOU FOR YOUR SOLUTION.

I AM WORKING ON THAT NOW.

ONCE AGAIN THANKS

REGARDS

VENKI

Mohammad Mazharuddin Ehsan SSCarpal Tunnel Points: 4552 More actions · Answer 10

Hi Venki,

It is my great pleasure to know that the script is helpful for your requirements. Please post your progress and/or difficulties if any to this forum or at

[/url]

Also I will be thankful if you rate the above script for its contents and usefulness.

Regards,

Mazharuddin

-----------------------------------------------------------[font=Arial Black]Time Is Money[/font][font=Arial Narrow]Calculating the Number of Business Hours Passed since a Point of Time[/url][/font][font=Arial Narrow]Calculating the Number of Business Hours Passed Between Two Points of Time[/font]

Mohammad Mazharuddin Ehsan SSCarpal Tunnel Points: 4552 More actions · Answer 11

Hi Venki,

It is my pleasure to inform that I have posted the second version of my work

Calculating the Number of Business Hours Passed Since a Point of Time[/url]

I have modified it to

Calculate the Number of Business Hours Passed BetweenTwo Points of Time

The new version will will take two datetime type value as input parameters ('Start Date' & 'End Date' ). It also incorporates holidays.

Sincerely,

Maz

-----------------------------------------------------------[font=Arial Black]Time Is Money[/font][font=Arial Narrow]Calculating the Number of Business Hours Passed since a Point of Time[/url][/font][font=Arial Narrow]Calculating the Number of Business Hours Passed Between Two Points of Time[/font]

venkatesh-MSBI Mr or Mrs. 500 Points: 522 More actions · Answer 12

hi Maz,

It was very useful to my function. Its working yaar.

Thanks for giving me great support

Yours sincerely

Venki

Jeff Moden SSC Guru Points: 1004339 More actions · Answer 13

Thought I'd in throw an update to this problem...

If I may suggest...

1. We don't need RBAR to do this... no WHILE loops please. :sick:

2. We don't need 8 functions to do this... that's a lot of complicated code to maintain not to mention the overhead of calling 8 functions.

3. We certainly don't need any hardcoding of times for this. Even the DatePart(DW) shouldn't be hardcoded because of the possible settings of DATEFIRST

4. The absolute best way to do this is to have a Calendar table. Yeah, I know... for some reason, lots and lots of folks would rather use some very complicated code and While Loops to do this instead of the very simple method of using a Calendar table.

With all of that in mind, might I suggest the following instead?

--===== Declare some obviously named variables

DECLARE @StartDateTime DATETIME,

@EndDateTime DATETIME,

@WorkTimeStart1 DATETIME,

@WorkTimeEnd1 DATETIME,

@WorkTimeStart2 DATETIME,

@WorkTimeEnd2 DATETIME,

@BinSize INT,

@Saturday INT, --Datepart(dw) for Saturday regardless of DATEFIRST

@Sunday INT --Datepart(dw) for Sunday regardless of DATEFIRST

;

--===== Preset the variables

SELECT @StartDateTime = '2007-11-16 15:30', --Likely parameter in function

@EndDateTime = '2007-11-20 14:00', --Could be parameter in function

@WorkTimeStart1 = '07:30', --Could be parameter in function

@WorkTimeEnd1 = '11:30', --Could be parameter in function

@WorkTimeStart2 = '12:00', --Could be parameter in function

@WorkTimeEnd2 = '16:00', --Could be parameter in function

@BinSize = 15, --Minutes, Could be parameter in function

@Saturday = DATEPART(dw,5), --First Saturday of 1900

@Sunday = DATEPART(dw,6) --First Sunday of 1900

;

--===== Using the start and end time, calculate the number of business hours

-- between those two date/times.

WITH

cteTimeSlots AS

(--==== Produces a list of datetime slots in @BinSize minute intervals

SELECT DATEADD(mi,(t.n-1)*@BinSize,@StartDateTime) AS TimeSlot

FROM dbo.Tally t

WHERE t.N = @WorkTimeStart1 AND d.Time = @WorkTimeStart2 AND d.Time < @WorkTimeEnd2)

)

-- AND NOT EXISTS (SELECT 1 FROM dbo.Holiday h WHERE d.Date = h.Date)

As usual, details of how it works are in the comments. If you don't know what a Tally table is or how it works, please see the following article...

[font="Arial Black"]http://www.sqlservercentral.com/articles/T-SQL/62867/[/font][/url]

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

Ken Champion SSC Enthusiast Points: 107 More actions · Answer 14

This is my first experience with a tally table. I modified your solution to calculate number of business days given the start datetime and end datetime, and it worked perfectly. Amazingly elegant and fast.