A Microsoft Excel forum. ExcelBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » ExcelBanter forum » Excel Newsgroups » Excel Discussion (Misc queries)
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

How do I find duplicate entries in a column in an Excel worksheet?



 
 
Thread Tools Display Modes
  #1  
Old August 8th 07, 05:14 PM posted to microsoft.public.excel.misc
Chunka
external usenet poster
 
Posts: 4
Default How do I find duplicate entries in a column in an Excel worksheet?

I am working with Excel 2000. I have two columns. Column A contains a
Procedure number and column B contains the associated fee. Each procedure
should only be represented once. My goal is to identify instances where a
procedure is repeated (duplicate entries), so that I can determine which
entry is correct. If you are familiar with Access, I am basically trying to
achieve in Excel, the same thing that a "Find Duplicates" query does in
Access.


Ads
  #2  
Old August 8th 07, 05:34 PM posted to microsoft.public.excel.misc
JLatham
external usenet poster
 
Posts: 3,366
Default How do I find duplicate entries in a column in an Excel worksheet?

In column C, or another available column, put a formula like this in the
first row with values in A to be examined, then fill the formula on down the
sheet to the end of the list:
=IF(COUNTIF(A$1:A$7,A1)>1,"Duplicated","")
Change A$1:A$7 to include your whole range in column a, as perhaps A$2:A$1504

If you can put that in column C, and if there are entries all the way down
the sheet in column B, then you can quickly fill it by moving the cursor to
the lower right corner of the cell with the formula in it until it becomes a
thick + symbol instead of the normal fat cross, then double-click the left
mouse button to fill it all the way to the end.

"Chunka" wrote:

> I am working with Excel 2000. I have two columns. Column A contains a
> Procedure number and column B contains the associated fee. Each procedure
> should only be represented once. My goal is to identify instances where a
> procedure is repeated (duplicate entries), so that I can determine which
> entry is correct. If you are familiar with Access, I am basically trying to
> achieve in Excel, the same thing that a "Find Duplicates" query does in
> Access.
>
>

  #3  
Old August 9th 07, 04:22 PM posted to microsoft.public.excel.misc
Chunka
external usenet poster
 
Posts: 4
Default How do I find duplicate entries in a column in an Excel worksh

Thank you so much JLATHAM, you rock! This helped a lot. FYI, the formula as
written shows "duplicated" if the line above it is a duplicate, so if the
duplicate records are not consecutive it would not work. I changed the "A1"
reference to "A2" so that it would display "duplicated" only if that
particular line was a duplicate record!

"JLatham" wrote:

> In column C, or another available column, put a formula like this in the
> first row with values in A to be examined, then fill the formula on down the
> sheet to the end of the list:
> =IF(COUNTIF(A$1:A$7,A1)>1,"Duplicated","")
> Change A$1:A$7 to include your whole range in column a, as perhaps A$2:A$1504
>
> If you can put that in column C, and if there are entries all the way down
> the sheet in column B, then you can quickly fill it by moving the cursor to
> the lower right corner of the cell with the formula in it until it becomes a
> thick + symbol instead of the normal fat cross, then double-click the left
> mouse button to fill it all the way to the end.
>
> "Chunka" wrote:
>
> > I am working with Excel 2000. I have two columns. Column A contains a
> > Procedure number and column B contains the associated fee. Each procedure
> > should only be represented once. My goal is to identify instances where a
> > procedure is repeated (duplicate entries), so that I can determine which
> > entry is correct. If you are familiar with Access, I am basically trying to
> > achieve in Excel, the same thing that a "Find Duplicates" query does in
> > Access.
> >
> >

  #4  
Old September 17th 08, 06:03 PM posted to microsoft.public.excel.misc
Marsha
external usenet poster
 
Posts: 6
Default How do I find duplicate entries in a column in an Excel worksh

I want to find duplicates, but they are student names so I need to include 2
columns in the formula. ie first name in column b, last name in colum c.
How can I incorporate two colums? Please reply to
Thanks for your help.

"JLatham" wrote:

> In column C, or another available column, put a formula like this in the
> first row with values in A to be examined, then fill the formula on down the
> sheet to the end of the list:
> =IF(COUNTIF(A$1:A$7,A1)>1,"Duplicated","")
> Change A$1:A$7 to include your whole range in column a, as perhaps A$2:A$1504
>
> If you can put that in column C, and if there are entries all the way down
> the sheet in column B, then you can quickly fill it by moving the cursor to
> the lower right corner of the cell with the formula in it until it becomes a
> thick + symbol instead of the normal fat cross, then double-click the left
> mouse button to fill it all the way to the end.
>
> "Chunka" wrote:
>
> > I am working with Excel 2000. I have two columns. Column A contains a
> > Procedure number and column B contains the associated fee. Each procedure
> > should only be represented once. My goal is to identify instances where a
> > procedure is repeated (duplicate entries), so that I can determine which
> > entry is correct. If you are familiar with Access, I am basically trying to
> > achieve in Excel, the same thing that a "Find Duplicates" query does in
> > Access.
> >
> >

  #5  
Old September 17th 08, 09:35 PM posted to microsoft.public.excel.misc
Gord Dibben
external usenet poster
 
Posts: 22,912
Default How do I find duplicate entries in a column in an Excel worksh

In column D enter

=B1 & " " & C1

Double-click the fill handle to increment down D

Use the countif formula in column E by changing cellrefs to column D


Gord Dibben MS Excel MVP

On Wed, 17 Sep 2008 10:03:02 -0700, Marsha
> wrote:

>I want to find duplicates, but they are student names so I need to include 2
>columns in the formula. ie first name in column b, last name in colum c.
>How can I incorporate two colums? Please reply to
>Thanks for your help.
>
>"JLatham" wrote:
>
>> In column C, or another available column, put a formula like this in the
>> first row with values in A to be examined, then fill the formula on down the
>> sheet to the end of the list:
>> =IF(COUNTIF(A$1:A$7,A1)>1,"Duplicated","")
>> Change A$1:A$7 to include your whole range in column a, as perhaps A$2:A$1504
>>
>> If you can put that in column C, and if there are entries all the way down
>> the sheet in column B, then you can quickly fill it by moving the cursor to
>> the lower right corner of the cell with the formula in it until it becomes a
>> thick + symbol instead of the normal fat cross, then double-click the left
>> mouse button to fill it all the way to the end.
>>
>> "Chunka" wrote:
>>
>> > I am working with Excel 2000. I have two columns. Column A contains a
>> > Procedure number and column B contains the associated fee. Each procedure
>> > should only be represented once. My goal is to identify instances where a
>> > procedure is repeated (duplicate entries), so that I can determine which
>> > entry is correct. If you are familiar with Access, I am basically trying to
>> > achieve in Excel, the same thing that a "Find Duplicates" query does in
>> > Access.
>> >
>> >


  #6  
Old September 18th 08, 12:06 AM posted to microsoft.public.excel.misc
Marsha
external usenet poster
 
Posts: 6
Default How do I find duplicate entries in a column in an Excel worksh

Thank you so much for your quick response. I will try that and let you know
how it works. Thanks again

"Gord Dibben" wrote:

> In column D enter
>
> =B1 & " " & C1
>
> Double-click the fill handle to increment down D
>
> Use the countif formula in column E by changing cellrefs to column D
>
>
> Gord Dibben MS Excel MVP
>
> On Wed, 17 Sep 2008 10:03:02 -0700, Marsha
> > wrote:
>
> >I want to find duplicates, but they are student names so I need to include 2
> >columns in the formula. ie first name in column b, last name in colum c.
> >How can I incorporate two colums? Please reply to
> >Thanks for your help.
> >
> >"JLatham" wrote:
> >
> >> In column C, or another available column, put a formula like this in the
> >> first row with values in A to be examined, then fill the formula on down the
> >> sheet to the end of the list:
> >> =IF(COUNTIF(A$1:A$7,A1)>1,"Duplicated","")
> >> Change A$1:A$7 to include your whole range in column a, as perhaps A$2:A$1504
> >>
> >> If you can put that in column C, and if there are entries all the way down
> >> the sheet in column B, then you can quickly fill it by moving the cursor to
> >> the lower right corner of the cell with the formula in it until it becomes a
> >> thick + symbol instead of the normal fat cross, then double-click the left
> >> mouse button to fill it all the way to the end.
> >>
> >> "Chunka" wrote:
> >>
> >> > I am working with Excel 2000. I have two columns. Column A contains a
> >> > Procedure number and column B contains the associated fee. Each procedure
> >> > should only be represented once. My goal is to identify instances where a
> >> > procedure is repeated (duplicate entries), so that I can determine which
> >> > entry is correct. If you are familiar with Access, I am basically trying to
> >> > achieve in Excel, the same thing that a "Find Duplicates" query does in
> >> > Access.
> >> >
> >> >

>
>

  #7  
Old November 20th 08, 02:13 PM posted to microsoft.public.excel.misc
Pmatushin
external usenet poster
 
Posts: 1
Default How do I find duplicate entries in a column in an Excel worksh

Hello. I am trying to identify duplicates in column A and compared to column
B. The data starts with a text letter, i.e. A1234. How do I search these two
rows to see if there are any duplicates?

"Marsha" wrote:

> Thank you so much for your quick response. I will try that and let you know
> how it works. Thanks again
>
> "Gord Dibben" wrote:
>
> > In column D enter
> >
> > =B1 & " " & C1
> >
> > Double-click the fill handle to increment down D
> >
> > Use the countif formula in column E by changing cellrefs to column D
> >
> >
> > Gord Dibben MS Excel MVP
> >
> > On Wed, 17 Sep 2008 10:03:02 -0700, Marsha
> > > wrote:
> >
> > >I want to find duplicates, but they are student names so I need to include 2
> > >columns in the formula. ie first name in column b, last name in colum c.
> > >How can I incorporate two colums? Please reply to
> > >Thanks for your help.
> > >
> > >"JLatham" wrote:
> > >
> > >> In column C, or another available column, put a formula like this in the
> > >> first row with values in A to be examined, then fill the formula on down the
> > >> sheet to the end of the list:
> > >> =IF(COUNTIF(A$1:A$7,A1)>1,"Duplicated","")
> > >> Change A$1:A$7 to include your whole range in column a, as perhaps A$2:A$1504
> > >>
> > >> If you can put that in column C, and if there are entries all the way down
> > >> the sheet in column B, then you can quickly fill it by moving the cursor to
> > >> the lower right corner of the cell with the formula in it until it becomes a
> > >> thick + symbol instead of the normal fat cross, then double-click the left
> > >> mouse button to fill it all the way to the end.
> > >>
> > >> "Chunka" wrote:
> > >>
> > >> > I am working with Excel 2000. I have two columns. Column A contains a
> > >> > Procedure number and column B contains the associated fee. Each procedure
> > >> > should only be represented once. My goal is to identify instances where a
> > >> > procedure is repeated (duplicate entries), so that I can determine which
> > >> > entry is correct. If you are familiar with Access, I am basically trying to
> > >> > achieve in Excel, the same thing that a "Find Duplicates" query does in
> > >> > Access.
> > >> >
> > >> >

> >
> >

  #8  
Old November 20th 08, 04:52 PM posted to microsoft.public.excel.misc
Dave Peterson
external usenet poster
 
Posts: 35,220
Default How do I find duplicate entries in a column in an Excel worksh

You could use this formula in column C to see if the value in column A of that
row matches any value in column B:

=countif(b:b,a1)>0
(if you see true, then you have a duplicate)

And same kind of thing in column D:
=countif(a:a,b1)>0
to see if B1 shows up in column A.


Pmatushin wrote:
>
> Hello. I am trying to identify duplicates in column A and compared to column
> B. The data starts with a text letter, i.e. A1234. How do I search these two
> rows to see if there are any duplicates?
>
> "Marsha" wrote:
>
> > Thank you so much for your quick response. I will try that and let you know
> > how it works. Thanks again
> >
> > "Gord Dibben" wrote:
> >
> > > In column D enter
> > >
> > > =B1 & " " & C1
> > >
> > > Double-click the fill handle to increment down D
> > >
> > > Use the countif formula in column E by changing cellrefs to column D
> > >
> > >
> > > Gord Dibben MS Excel MVP
> > >
> > > On Wed, 17 Sep 2008 10:03:02 -0700, Marsha
> > > > wrote:
> > >
> > > >I want to find duplicates, but they are student names so I need to include 2
> > > >columns in the formula. ie first name in column b, last name in colum c.
> > > >How can I incorporate two colums? Please reply to
> > > >Thanks for your help.
> > > >
> > > >"JLatham" wrote:
> > > >
> > > >> In column C, or another available column, put a formula like this in the
> > > >> first row with values in A to be examined, then fill the formula on down the
> > > >> sheet to the end of the list:
> > > >> =IF(COUNTIF(A$1:A$7,A1)>1,"Duplicated","")
> > > >> Change A$1:A$7 to include your whole range in column a, as perhaps A$2:A$1504
> > > >>
> > > >> If you can put that in column C, and if there are entries all the way down
> > > >> the sheet in column B, then you can quickly fill it by moving the cursor to
> > > >> the lower right corner of the cell with the formula in it until it becomes a
> > > >> thick + symbol instead of the normal fat cross, then double-click the left
> > > >> mouse button to fill it all the way to the end.
> > > >>
> > > >> "Chunka" wrote:
> > > >>
> > > >> > I am working with Excel 2000. I have two columns. Column A contains a
> > > >> > Procedure number and column B contains the associated fee. Each procedure
> > > >> > should only be represented once. My goal is to identify instances where a
> > > >> > procedure is repeated (duplicate entries), so that I can determine which
> > > >> > entry is correct. If you are familiar with Access, I am basically trying to
> > > >> > achieve in Excel, the same thing that a "Find Duplicates" query does in
> > > >> > Access.
> > > >> >
> > > >> >
> > >
> > >


--

Dave Peterson
  #9  
Old December 1st 08, 05:33 PM posted to microsoft.public.excel.misc
WisconsinGreg
external usenet poster
 
Posts: 1
Default How do I find duplicate entries in a column in an Excel worksheet?

I'm working with over 5,000 lines, so I wanted a simpler fix.
Found it he http://support.microsoft.com/default.aspx/kb/213355

I've never used a Macro before, but found it was easy to do by following
these steps taken from Excel help:
1. On the Tools menu in Microsoft Excel, point to Macro, and then click
Visual Basic Editor.
2. On the Insert menu, click Module.
3. Type or copy your code into the code window of the module.
4. In the module window, press F5. (Before pressing F5 be sure you've
selected the first line of the column you want to check for duplicates--in
Excel.)

(Copy and paste the following Macro into Visual Basic, and press F5.)

Sub FindDups ()
'
' NOTE: You must select the first cell in the column and
' make sure that the column is sorted before running this macro
'
ScreenUpdating = False
FirstItem = ActiveCell.Value
SecondItem = ActiveCell.Offset(1, 0).Value
Offsetcount = 1
Do While ActiveCell <> ""
If FirstItem = SecondItem Then
ActiveCell.Offset(Offsetcount,0).Interior.Color = RGB(255,0,0)
Offsetcount = Offsetcount + 1
SecondItem = ActiveCell.Offset(Offsetcount, 0).Value
Else
ActiveCell.Offset(Offsetcount, 0).Select
FirstItem = ActiveCell.Value
SecondItem = ActiveCell.Offset(1,0).Value
Offsetcount = 1
End If
Loop
ScreenUpdating = True
End Sub

F5 runs the macro script, and your duplicate lines should be marked in red.
Good Luck!

"Chunka" wrote:

> I am working with Excel 2000. I have two columns. Column A contains a
> Procedure number and column B contains the associated fee. Each procedure
> should only be represented once. My goal is to identify instances where a
> procedure is repeated (duplicate entries), so that I can determine which
> entry is correct. If you are familiar with Access, I am basically trying to
> achieve in Excel, the same thing that a "Find Duplicates" query does in
> Access.
>
>

  #10  
Old January 4th 09, 02:47 AM posted to microsoft.public.excel.misc
ncrdbl
external usenet poster
 
Posts: 1
Default How do I find duplicate entries in a column in an Excel worksheet?

I fond this very useful, I needed to create a list of Students with their
parent's name listed once. The raw list had the parent's name listed with
each of their kids, I used the formula to clear the parent's name on their
subsequent children.

Thanks again!

"Chunka" wrote:

> I am working with Excel 2000. I have two columns. Column A contains a
> Procedure number and column B contains the associated fee. Each procedure
> should only be represented once. My goal is to identify instances where a
> procedure is repeated (duplicate entries), so that I can determine which
> entry is correct. If you are familiar with Access, I am basically trying to
> achieve in Excel, the same thing that a "Find Duplicates" query does in
> Access.
>
>

 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
NO DUPLICATE ENTRIES IN A COLUMN USING EXCEL JOHNNYG Setting up and Configuration of Excel 1 December 10th 05 02:12 PM
How do I find duplicate entries in Excel cher Excel Discussion (Misc queries) 2 June 23rd 05 06:29 PM
How do I set up an Excel column to not allow duplicate entries (m. Staci2s Excel Discussion (Misc queries) 2 June 2nd 05 06:05 PM
How can I find duplicate entries in an entire worksheet? jbrown New Users to Excel 2 May 12th 05 12:41 AM
Find duplicate entries kharrison Excel Discussion (Misc queries) 3 February 24th 05 11:19 PM


All times are GMT +1. The time now is 04:19 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2004-2014 ExcelBanter.
The comments are property of their posters.