Question

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How to calculate age in T-SQL with years, months, and days

I have an application which calculates age on the specific date completely that is in years-months-days . Is there any simple way to calculate this in sql server 2005 . Actually I have created a function for this but that quite complex . I just want to know is there any simple way or any functionality in sql server from which I am not aware of?

The requirement is quite simple to calculate the exact age on the specific date for any applicant.

Answer 1

Not sure if it’s 100% correct, but something like this:

declare @d1 datetime, @d2 datetime, @y int, @m int, @d int
set @d1 = '2009-09-23'
set @d2 = '2012-04-23'

set @y = datediff(year, @d1, @d2) - 1
set @m = datediff(month, dateadd(year, @y, @d1), @d2) 
if dateadd(month, @m, dateadd(year, @y, @d1)) > @d2 set @m = @m - 1

set @d = datediff(day, dateadd(month, @m, dateadd(year, @y, @d1)), @d2)
print cast(@y as nvarchar) + ' year(s) ' + cast(@m as nvarchar) + ' month(s) and ' + cast(@d as nvarchar) + ' day(s)'