Age between to dates

I am trying to get results where a user is of a certain age between two given dates (DOB) is the dob in the database.
I am not getting any results tho, here is my query:


        SELECT * FROM dbo.Users
        where   30
     BETWEEN DATEDIFF(YEAR, DobD, 01/01/2000)AND DATEDIFF(YEAR, DobD, 01/01/2050)

The above example is for someone being 30 yrs old between 01/01/2000 and 01/01/2050 and his birthdate on DobD

Help is appreciated
LVL 1
AleksAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

ste5anSenior DeveloperCommented:
The problem is not obvious.

You haven't specified dates as boundary values. But expressions. 01/01/2000 and 01/01/2050 are not date literals but integer division expressions. They result in an integer, which is implicit casted to a DATETIME.

E.g.

 
SELECT  CAST(01 / 01 / 2000 AS DATETIME) ,
        CAST(01 / 01 / 2050 AS DATETIME)

DECLARE @Users TABLE ( ID INT, DOB DATE );

INSERT  INTO @Users
VALUES  ( 0, '18700101' ),
        ( 1, '19700101' ),
        ( 2, '19800101' ),
        ( 3, '19900101' ),
        ( 4, '20000101' ),
        ( 5, '20100101' ),
        ( 6, '20200101' ),
        ( 7, '20300101' );

     
SELECT  *
FROM    @Users
WHERE   30 BETWEEN DATEDIFF(YEAR, DOB, 01 / 01 / 2000) AND DATEDIFF(YEAR, DOB, 01 / 01 / 2050);
     
SELECT  *
FROM    @Users
WHERE   30 BETWEEN DATEDIFF(YEAR, DOB, '20000101') AND DATEDIFF(YEAR, DOB, '20500101');

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Query Syntax

From novice to tech pro — start learning today.