Calculate Workingdays including Holidays with T-SQL

Calculate Workingdays between 2 Date columns

Recently I have been getting some questions from my customers, can I calculate the number of workdays between 2 dates? Of course my answer was, yes you can. But I do want certain closing dates and holidays of our company not to be included either. That became a little bit more difficult. Eventually I was able to solve this and would like to share that with you.

T-SQL

What do you need as a minimum.

A Date Dimension that includes the day of the week and a fact in which you want to calculate the number of workdays between 2 dates.

WeekendDay

First of all we need to create a table or view where we define our Holidays and Closing Days.

In my case I just created a simple view where I’ve defined my Holidays, there are more ways to achieve this functionality, but this works as well.

Holidays

After we’ve created our Holidays we need to create the the following Function:

Businessdays

Finally include this function in your Query.

If we want to know how many workingdays there are between OrderDate 2019-05-29 and ExpectedDeliverydate 2019-06-18 we call the function dbo.fnBusinessday(OrderDate , ExpectedDeliverydate ), the result will be 12.

This is because we have defined 2019-05-30 and 2019-06-10 as Holidays and in between we have 3 weekends.

WorkingDays

If there are no holidays then only the weekend days are not included.

WorkingDaysNoHolidays

With the above method you can use the calculation dynamically every time.

If there are any questions, please leave them in the comments below.

The sample code can be found here.

Feel free to leave a comment

0 Comments

Submit a Comment

Your email address will not be published.

fifteen + 11 =

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Proud to be an ADF Hackathon winner!

Azure Data Factory HackathonAround the clock During the event 'Around the clock Azure SQL and Azure Data Factory' event on Feb 3, 2021, they kicked-off the Azure Data Factory (ADF) Hackathon. Recording of this event can be found here.Winner I submitted a ADF Pipeline...

Rerun Pipeline activities in Azure Data Factory

Rerun Pipeline activities in ADF! As of today you can rerun or partially, yes you’re reading it correct partially, rerun you Azure Data Factory pipeline.Where you previously had to run the entire Pipeline again, you can now run a part of the Pipeline. This can save a...

My sessions at Pass Data Community Summit

A hybrid conference in Seattle and online This year's PASS Data Community Summit is more than a conference – it's a homecoming. Reconnect with old friends, build new relationships, gain new skills, and get the world-class training you need to take that next step in...

Microsoft Build 2022 Book of News

Microsoft Build 2022MSBuild 2022 has just started. A lot of new Announcement will be released or demonstrated the upcoming days. Like every year or event most of these announcement are added to the Book of News.The book of news can be downloaded from the link below...

Are you using Azure DevOps?

Azure DevOpsMore and more users are starting with Azure DevOps. Azure DevOps can be used for up to 5 users free of charge and is therefore a great start to start a project.    Build and Release I will not describe what Azure DevOps can do, because that is too much to...

Service Health Alerts in Azure

Maintenance and Service Healths in AzureI get often questions, is there no maintenance in Azure. Like every data center, the Azure data center also needs maintenance. You can even be notified when a specific service, in a specific data center, has scheduled...

Azure Purview March Updates

Azure Purview updatesAnnouncements Last week during SQLBITS, quite a few new updates were announced. I would like to include you in these announcements.March updates Support for SAP Business Warehouse (Preview) Blogpost:...

10 Days of Azure Synapse Analytics

10 Days of Azure Synapse AnalyticsFor the next 10 days, every day a different topic is explained about Azure Synapse Analytics. The shortest and easiest way to see how Azure Synapse Analytics can help you, to make decisions within your data landscape.Day 1...

Azure Synapse Analytics

Azure Synapse Analytics  Insights for all Azure Synapse provides a breathtaking view of your data across data warehouses and big data analytics systems. Bringing these two worlds together into a single service is challenging as it requires unifying similar...

Updated competency exams and certifications Data Platform and Data Analytics for 2020

Retiring and new exams and certifications as of June 30 2020 A lot of Exams and certifications for Data Platform and Data Analytics are retiring on June 30 2020. All retired Exams and certifications will remain eligible for competency attainment and renewal until June...