Formula to recognize Duplicates

[Spike9458]

I have a list of about 6000 line items. Among other things, the data
includes names and email addresses. There are many duplicate entries,
checking line by line for 6000 lines is not very appealing to me.

Can someone help me to devise a formula or other way to do this?

Thanks,

--Jim

 

[Dave Peterson]

Chip Pearson has some techniques at:
http://www.cpearson.com/excel/duplicat.htm

 

[Guest]

Two approaches - Filtering and Conditional Formatting


Filtering can remove the duplicates:
1. select the data
2. pull-down Data > filter > Advanced Filter and check unique records only


Conditional Formatting can mark the duplicates (no removal)
1. select the top cell
2. pull-down Format > Condtional Formatting...then select formula is
3. for the formula use something like =COUNTIF(A$1:A$10,A1)>1

 

[Spike9458]

Thanks Chip, I think it's exactly what I was looking for ... I will post
back when I'm done with the file.

--Jim

: Chip Pearson has some techniques at:
: http://www.cpearson.com/excel/duplicat.htm
:
:
: Spike9458 wrote:
: >
: > I have a list of about 6000 line items. Among other things, the data
: > includes names and email addresses. There are many duplicate entries,
: > checking line by line for 6000 lines is not very appealing to me.
: >
: > Can someone help me to devise a formula or other way to do this?
: >
: > Thanks,
: >
: > --Jim
:
: --
:
: Dave Peterson

 

[Spike9458]

Thank-you for your response. I am going to try this formula too, I want to
do what is easiest between this and the formula shown at the site Dave
linked me to. I will post back when I am done with the file.

--Jim

: Two approaches - Filtering and Conditional Formatting
:
:
: Filtering can remove the duplicates:
: 1. select the data
: 2. pull-down Data > filter > Advanced Filter and check unique records only
:
:
: Conditional Formatting can mark the duplicates (no removal)
: 1. select the top cell
: 2. pull-down Format > Condtional Formatting...then select formula is
: 3. for the formula use something like =COUNTIF(A$1:A$10,A1)>1
: --
: Gary's Student
:
:
: "Spike9458" wrote:
:
: > I have a list of about 6000 line items. Among other things, the data
: > includes names and email addresses. There are many duplicate entries,
: > checking line by line for 6000 lines is not very appealing to me.
: >
: > Can someone help me to devise a formula or other way to do this?
: >
: > Thanks,
: >
: > --Jim
: >
: >
: >

 

[Gord Dibben]

Chip Pearson has various "Duplicate" formulas at his website.

http://www.cpearson.com/excel/duplicat.htm#TaggingDuplicates


Gord Dibben MS Excel MVP