DATEDIFF – 1 year off

60 pts.
Tags:
DATEDIFF
T-SQL
I need to figure out age from a birthday. When I use the DATEDIFF function for year, the number of years is one year ahead if the birthday hasn't passed yet for this year. How can I get the accurate age based on the day and month of the birthday.

Answer Wiki

Thanks. We'll let you know when a new response is added.

Try this:

<pre>SELECT <b>DATEDIFF(year,0,GETDATE()-birth_date)</b>
FROM your_table
WHERE <conditions>;</pre>

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