Counting Occurences Between Dates

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Blddrgn700 - 22 Oct 2007 18:35 GMT

Hi All:

I have data that contains a variety of dates that I have sorted by date. I
am trying to count the nuber of occurences in a given month. EI:

Customer x 1/1/07
Customer x 1/1/07
Customer x 1/4/07
Customer x 1/5/07
Curtomer x 1/31/07

Total occurences for this customer would equal 5.
I have been trying Countif function but it is not returning any value other
than 0 or 1, so I believe that I am missing a step. I have looked through
some of the previous posts but did not see anything that may pertain to what
I am looking for. Thank you in advance for any advice you may offer.

Blddrgn

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Bob Phillips - 22 Oct 2007 18:44 GMT

=SUMPRODUCT(--(A1:A100="Customer x"),--(MONTH(B1:B100)=1))

Signature

HTH

Bob

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

> Hi All:
>
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>
> Blddrgn

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Blddrgn700 - 22 Oct 2007 19:22 GMT

> =SUMPRODUCT(--(A1:A100="Customer x"),--(MONTH(B1:B100)=1))
>
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>
> Bob,

Thank you I follow the information you provided. In my example I left out a
valuable piece of information the date field is over two years 2006 and 2007.
So I see in your formula month equals 1 that would count all first month
data. Now with this being over two years were would the reference
distinguish between those two years. I apolgize for leaving that crucial
piece out in my original example.

Blddrgn

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Bob Phillips - 22 Oct 2007 23:43 GMT

=SUMPRODUCT(--(A1:A100="Customer
x"),--(MONTH(B1:B100)=1),--(YEAR(B1:B100)=2007))

Signature

HTH

Bob

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

>> =SUMPRODUCT(--(A1:A100="Customer x"),--(MONTH(B1:B100)=1))
>>
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>
> Blddrgn

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Ron Rosenfeld - 22 Oct 2007 19:19 GMT

>Hi All:
>
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>
>Blddrgn

=countif(a:a,">="&date(2007,1,1) - countif(a:a,">"&date(2007,1,28)

--ron

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Ron Coderre - 22 Oct 2007 19:30 GMT

If you're always counting occurrences for an entire month...
try something like this:

A1:A20 contains Customer Names
B1:B20 contains dates

C1: (a customer to search for)
D1: (a date)

This formula counts the occurrences of the customer in C1 where the Col_B date is in the same year and month as the date in D1:
=SUMPRODUCT((A1:A20=C1)*(TEXT(B1:B20,"yyyymm")=TEXT(D1,"yyyymm")))

or if you prefer this method:
=SUMPRODUCT(--(A1:A20=C1),--(TEXT(B1:B20,"yyyymm")=TEXT(D1,"yyyymm")))

Is that something you can work with?
--------------------------

Regards,

Ron (XL2003, Win XP)
Microsoft MVP (Excel)

> Hi All:
>
[quoted text clipped - 14 lines]
>
> Blddrgn

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Blddrgn700 - 22 Oct 2007 20:19 GMT

> If you're always counting occurrences for an entire month...
> try something like this:
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>
> Ron,

The second formula when I moved the outcome cell onto the same worksheet as
the data.

Thanks all who replied!!!

Blddrgn700

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