I'd add an extra column on the worksheet that should be cleaned up--not the
worksheet with all the phone numbes to delete.

=isnumber(match(d2,sheet2!a:a,0))

If there's a match, then you'll get True. No match = False.

Then apply data|Filter|autofilter and show the True's. Delete the visible rows
and then delete the helper column.

(Or sort all 5 columns (A:E) by column E and delete that group of True's.)

Luke Rogers wrote:

The situation: I have two worksheets both of which have columns named:

1) Name
2: Address
3) Post Code
4) Telephone Number

I am using the telephone number as the unique identifier as we only have to
store data 'per household' - not 'per customer'.

On the first worksheet there is a list of all the customers.
On the second worksheet there is a list of customers who wish to be taken
off our customer list.

I need to use the second worksheet to delete the customer entries in the
first worksheet.

I have tried to use the worksheets together to identify duplicates but there
seems to be a problem doing this between two worksheets.

Can anyone tell me a simp way of putting this equation into excel:

if sheet2 single telephone number = any sheet 1 telephone number
then delete customer record from sheet1.

Thanks guys!

--

Dave Peterson