Sumproduct calculation for January 09

[Tina]

=SUMPRODUCT(--(MONTH('2008'!B3:B2000)=1),--(YEAR(B3:B2000)=2009))

Hi all, I am using the above, but am getting #VALUE!

The format the date is typed in, in the main data sheet, is "05 January
2009", but I have also tried 05/01/2009 but to no avail. Can anyone say
where I am going wrong?
Thanks
Tina

 

[Pete_UK]

Well, you've missed the sheet name from the second condition, so maybe
it should be:

=SUMPRODUCT(--(MONTH('2008'!B3:B2000)=1),--(YEAR('2008'!
B3:B2000)=2009))

Hope this helps.

Pete

 

[Tina]

OK, sorted.... it was on a different worksheet and I forgot to reference it.
Now ok.

 

[Bob Phillips]

another way

=SUMPRODUCT(--('2008'!B3:B2000-DAY('2008'!B3:B2000)+1=--"2009-01-01"))

--
HTH

Bob

(there's no email, no snail mail, but somewhere should be gmail in my addy)

 

[Pete_UK]

Thanks for feeding back, Tina.

Pete

 

[Dave Peterson]

One more:

=sumproduct(--(text('2008'!b3:b2000,"yyyymm")="200901"))