I have a spreadsheet of about 14,000 lines. Four Columns (A) First Name, (B)
Last Name, (C) Login and (D) Email Address. I need to find out if any of
these contacts have the same email address.

Take a look on Advanced Filter in Help menu

"Robin Rescue" wrote:

I have a spreadsheet of about 14,000 lines. Four Columns (A) First Name, (B)
Last Name, (C) Login and (D) Email Address. I need to find out if any of
these contacts have the same email address.

You can use conditional formatting to highlight any duplicates.

I'll assume the email addresses are in the range D1:D14000

Select the range D1:D14000
Goto FormatConditional Formatting
Formula Is:

=COUNTIF(D$1:D$14000,D1)0

Click the Format button
Select the Pattern tab
Set the fill color to light yellow (?)
OK out

Biff

"Robin Rescue" <Robin wrote in message
...
I have a spreadsheet of about 14,000 lines. Four Columns (A) First Name,
(B)
Last Name, (C) Login and (D) Email Address. I need to find out if any of
these contacts have the same email address.

Hi Robin Rescue
I can recommend that you copy all the columns to a single excle sheet. This
is basicall to run an advance query which will fetch you all the information
for you to compare. I shall explain you how to do it.

Assuming that you have copied all the columns to a single spread sheet, you
know the column heading now, save the excel sheet.

Now I wiil be using the Advance filtering techniques so that all the column
information are retrieved even if the typed cells are misspelled, which
normally is not the case when you do a simple filtering technique. The
filtered values may not be correct.

To retieve the values;

1. Select all records and the column headings and define a name for the
range List. This is the List range name.
2. Select all column headings and paste in a seperate row anywhere in the
spreadsheet.
2. Select the pasted column heading along with an empty row and define a
name. This is the criteria range name.
3. Define a criteria on the second row for all columns, if necessary. For
example S* will display all details specific to "S'.
4. Click Data- Filter- Advanced Filter
5. Type the List name
6. Type the Criteria Name
7. Click copy to another location option - Mandatory
8. Click Copy to
9. Click the cell below the criteria range

All data will be displayed specific to the query you requested. This is very
usefull if the spreadsheet data are mistyped or mis-spelled. Now you have
done a database funtion on your excle spread sheet.

Challa Prabhu

"Robin Rescue" wrote:

I have a spreadsheet of about 14,000 lines. Four Columns (A) First Name, (B)
Last Name, (C) Login and (D) Email Address. I need to find out if any of
these contacts have the same email address.