# Using a range of dates to add data in a different column?

O

#### Outraged

I need to sum a range in a column based on the date in another column:
A B
1 Date Hours
2 05--Dec-26 7.2
3 05--Dec-29 6.8
4 06--Jan-01 2.1
5 06--Jan-12 3.3

essentially, i want to say "if the date in A is in Dec 05, add th
hours in B that correspond to Dec 05". so, in another cell, in anothe
sheet, i would get:

A B
1 Dec 05 14.0
2 Jan 06 5.4

B1 of the second sheet obviously where my formula would be.
Thanks.
-Carl Eubank

R

#### rocket0612

=SUMPRODUCT(--(\$A\$1:\$A\$500=DATE),\$B\$1:\$B\$500)

I think it would be somthing along these lines, sum column A tha
equals to the date (you will need to reference a cell with that dat
(eg put dec05 in c1) and then it will add all in column B that mee
thi

O

#### Outraged

maybe i am using the DATE in the wrong manner, but this doesnt seem to
be working. even if i use and exact date [to include the day, just to
see if i get any results].

I was hoping i could do this without adding another cell [i.e. a
reference cell] that has only the month and year. Would some sort of
IF statement work when referencing a column header? i.e. IF "Date" =
Jan 06, then add the cells in column "Hours" where "Date" = Jan 06.

[the format of Date is yy--mmm-dd and the actual data is 1/1/2006]

I hope I am explaining myself how I want to.

-Carl Eubanks