Calculate the Date of Previous Sunday

Bradley Schacht

Bradley Schacht is a Principal Program Manager on the Microsoft Fabric product team based in Saint Augustine, FL. Bradley is a former consultant, trainer, and has coauthored 6 SQL Server and Power BI books, most recently Learn Microsoft Fabric. As a member of the Microsoft Fabric product team, Bradley works directly with customers to solve some of their most complex data problems and helps shape the future of Microsoft Fabric. Bradley gives back to the community through speaking at events such as the SQLBits, Fabric Community Conference, PASS Community Data Summit, SQL Saturdays, Code Camps, and user groups across the country including locally at the Jacksonville SQL Server User Group (JSSUG). He is a contributor on SQLServerCentral.com and blogs on his personal site, BradleySchacht.com.

Bradley Schacht is a Principal Program Manager on the Microsoft Fabric product team based in Saint Augustine, FL.

There are a number of ways that you can calculate dates using T-SQL. A common practice is to find the first day of the week which can be accomplished easily by using the following function. SELECT DATEADD(wk, DATEDIFF(wk,0,GETDATE()), 0) However, you will notice that this returns the date for Monday as SQL Server uses Monday for the start of the week. If your week starts on Sunday or you need to get the date for the previous Sunday you can simply modify the DATEADD part of the query from adding zero to adding negative 1. So our query to get the date for the Sunday now becomes the following. SELECT DATEADD(wk, DATEDIFF(wk,0,GETDATE()), -1) One last modification if you do not want to have the timestamp attached is to add a conversion on the beginning. So now we get the date and no time. SELECT CONVERT(DATE,DATEADD(wk, DATEDIFF(wk,0,GETDATE()), 0)) This is all predicated on the DATEFIRST option in SQL Server being set to Monday. If it is already Sunday then the -1 is not necessary.

Calculate the Date of Previous Sunday

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