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How to calculate age from birthdate in SSRS

Posted on 2014-03-13
Medium Priority
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Hello Experts,

I'm using Report Builder 3.0 and have a dataset which has birth dates of users (mm/dd/yyyy).  I've added a table to my report showing some basic data of users per row and added an Age column.

Can anyone help me to calculate the age per user and populate their age in the new column?  I've tried some expressions, with no luck.  This is the last expression I tried:
``````=DATEDIFF(DateofBirth, getDate())
``````
Extra Info:
SQL Server Reporting Services 2008 R2
Report Builder 3.0

Any help is much appreciated, thank you.
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Question by:Modifier1000
• 4
• 4

Author Comment

ID: 39926394
Well, I got this far:
``````=DateDiff("yyyy", Fields!DateofBirth.Value, Now())
``````

It gives me the year, but it rounds up, now I just need to get year and month for a more exact date.  Also, any users without a birthdate entered, the Age value is 2013.  So I have about 20 users where someone did not enter their birthdate and their age shows 2013.
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LVL 27

Expert Comment

ID: 39926675
Use:

DATEDIFF(YY,DateofBirth, getDate())
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Author Comment

ID: 39926761
You suggest that for the Expression of a field in Report Builder (SSRS)?
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LVL 27

Expert Comment

ID: 39926816
That is the SQL syntax and I saw you tried it but wrongly.
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LVL 27

Accepted Solution

Zberteoc earned 2000 total points
ID: 39926829
To avoid the "rounding" issue You can try with months instead of years in you report formula, which I would now from the top of my head. Something like:

DateDiff("mm", Fields!DateofBirth.Value, Now())/12
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Author Comment

ID: 39926891
Ahhh, ok.

Well, I used your above expression and did a little massaging to get the following expression, which works:
``````=Round((DateDiff("m", Fields!DateofBirth.Value, Now()))/12, 1)
``````

Now I just need to figure out how to remove 2013 values from the Age column w/o an entered birthdate.

Thank you for pointing me in the right direction!
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Author Closing Comment

ID: 39926892
Thanks!
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LVL 27

Expert Comment

ID: 39926935
In order to get rid of that 2013 you need to replace the NULL values with Now(). I am not sure what is the syntax in SSRS but someting like:

Round((DateDiff("m", IfEmpty(Fields!DateofBirth.Value,Now()), Now()))/12, 1)

and the age in that case will return 0.
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