i am 15

10
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13
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25+
i am 15
Always have courage and be kind
SELECT
SUM(a.ages) / COUNT(a.id)
FROM(
SELECT
p.id,datediff(dd,p.date_of_birth,getdate())/365 ages
FROM
people p
WHERE
p.lastlogin > '01/01/2013'
)a
Something like that
who on earth is 10?!
i'm 19