sum() function - need help

[arvindpraj]

Hi,

When i used sum() function in the SQL queries in MS Access for calculating the age of people in a database. i can able to get the result but the result comes out with a minus (negative) sign in front of it..
I had posted my SQL query below

select sum(year(now())-year([date_of_birth])<30) as Less_than_30, sum(year(now())-year([date_of_birth])>=30) as 30_and_more from students

Can anyone please explain about this and suggest a solution..

Thank You

Arvind

[Tanis]

Try this function instead.

Public Function MyAge(dteDOB As Date, Optional SpecDate As Variant) As Integer
Dim dteBase As Date, intCurrent As Date, intEstAge As Integer
If IsMissing(SpecD ate) Then
dteBase = Date
Else
dteBase = SpecDate
End If
intEstAge = DateDiff("yyyy" , dteDOB, dteBase)
intCurrent = DateSerial(Year (dteBase), Month(dteDOB), Day(dteDOB))
MyAge = intEstAge + (dteBase < intCurrent)
End Function

Call it in a query like so

MyAge([YourDateField])

[arvindpraj]

Try this function instead.

Public Function MyAge(dteDOB As Date, Optional SpecDate As Variant) As Integer
Dim dteBase As Date, intCurrent As Date, intEstAge As Integer
If IsMissing(SpecD ate) Then
dteBase = Date
Else
dteBase = SpecDate
End If
intEstAge = DateDiff("yyyy" , dteDOB, dteBase)
intCurrent = DateSerial(Year (dteBase), Month(dteDOB), Day(dteDOB))
MyAge = intEstAge + (dteBase < intCurrent)
End Function

Call it in a query like so

MyAge([YourDateField])

Thank You

Arvind