SQL Query

I wrote the following query, which gives me what I need for a while.

Datediff(d, '2015-01-01', 'name of date column')
from table

How can I get 2015-01-01 to change to 2016-01-01 automatically, so I don't have to remember to change it?

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Russ SuterSenior Software DeveloperCommented:
DATEADD(yy, DATEDIFF(yy,0,getdate()), 0)

Will always give you the first day of the current year.
Will this work?

Datediff(d, DATEADD(yy, DATEDIFF(yy, 0, GETDATE()), 0), 'name of date column')
You could declare a variable with the 1st of the year, like this, and use the variable in your code.  Then you never have to change anything.

DECLARE @1stOfYr DATE = DATEADD(yy, DATEDIFF(yy,0,getdate()), 0)
--SELECT @1stOfYr

Datediff(d,@1stOfYr, 'name of date column')
from table

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Microsoft SQL Server 2008

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