There are many online people are asking how to calculate the age based on date of birth, to answer a lot of people, but most of them are cut in a way to count years of age, this error is too big, we now calculate precise idea of age They are: after years cut, and then compare monthly day, month, less than a day, minus a year on OK.
SQL Server calculate the exact ages:
the SELECT DATEDIFF (year, Birtyday, getdate ()) - Case the when DATEDIFF (Day, DATEADD (year, DATEDIFF (year, Birtyday, getdate ()), Birtyday), getdate ())> = 0 the then End the else. 1 0
the MySQL accurately calculated Age:
SELECT year (now ()) - year (Birthday) - (the DATE_FORMAT (the nOW (), '% m% D') <the DATE_FORMAT (Birthday, '% m% D'))
