Finding the date last year based on the current week and weekday using SQL Server

Today is the 21st of May, 2009 and it is a Thursday today. Have you wondered what date was Thursday last year in the same week? Here's a very handy query by Hector which displays the last year's date based on the current weekday and current week

SELECT DATEADD(day, (DATEPART(week, GETDATE()) * 7

+ DATEPART(weekday, GETDATE()))

- (DATEPART(week, DATEADD(year, -1, GETDATE())) * 7

+  DATEPART(weekday, DATEADD(year, -1, GETDATE()))), DATEADD(year, -1, GETDATE())) as LastYearDate

RESULT

LastYearDate

2008-05-22 11:14:26.350

About The Author

Suprotim Agarwal, MCSD, MCAD, MCDBA, MCSE, is the founder of DotNetCurry, DNC Magazine for Developers, SQLServerCurry and DevCurry. He has also authored a couple of books 51 Recipes using jQuery with ASP.NET Controls and a new one recently at The Absolutely Awesome jQuery CookBook.

Suprotim has received the prestigous Microsoft MVP award for nine times in a row now. In a professional capacity, he is the CEO of A2Z Knowledge Visuals Pvt Ltd, a digital group that represents premium web sites and digital publications comprising of Professional web, windows, mobile and cloud developers, technical managers, and architects.

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