Typo alert:
=sumproduct(--(isnumber(a1:a10),--(month(a1:a10)=8))
should have been:
=sumproduct(--(isnumber(a1:a10)),--(month(a1:a10)=8))

(I added a close paren.)

Dave Peterson wrote:

=sumproduct(--(isnumber(a1:a10),--(month(a1:a10)=8))

Adjust the ranges to match--but you can't use whole columns (except in xl2007).

=sumproduct() likes to work with numbers. The -- stuff changes trues and falses
to 1's and 0's.

Bob Phillips explains =sumproduct() in much more detail he
http://www.xldynamic.com/source/xld.SUMPRODUCT.html

And J.E. McGimpsey has some notes at:
http://mcgimpsey.com/excel/formulae/doubleneg.html

========
If you were only interested in certain years:
=sumproduct(--(text(a1:a10,"yyyymm")="200708"))

Neall wrote:

I have a result from my MYSQL querry into excel and I want to use the list of
dates to count against, I now want to create a summary sheet. I want to use
the date colums and just pull a count of how many rows have the August date,
September date and October date (these month results will be in different
cells)
--
Neall

--

Dave Peterson

--

Dave Peterson