Data Validation List & No Duplicate Entries

May 23, 2007

I have a spreadsheet that needs to have a validation drop down list in three cells in every row (D, E, F). There are three items in the list, say, "One", "Two" and "Three".

My only problem is that there can only be one entry of "One" in each row.

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Duplicate Entries Validation With 3 Columns

Feb 15, 2014

I am looking for either vba or excel method to prevent duplicate entries across multiple columns. The data validation only works when it is input manually by the user and not when it is generated by the formula

What i am trying to do ( assuming " | " are column dividers and each new line is a row)

abc | 2 | bac | 3 | cab | 4

bac | 3 | abc | 2 | cab | 4

abc | 2 | bac | 3 | cab | 4

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Custom Validation Formula To Prevent Duplicate Entries?

Aug 15, 2012

How do I set up a custom validation formula to prevent duplicate enties?

For example I I've already enter the song name 19 and Paul Hardcastle (BandName), how do I set it up where I can not enter that combination again on a row?

I was wanting to use a custom CountIF function but I could not get it to work.

A
B

Song
BandName

19
Paul Hardcastle

[Code] ....

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Create List That Has Duplicate Entries

Oct 18, 2007

I am trying to create a drop down list from a named range that has duplicate names listed. I cannot delete any of the duplicate rows. Is there an easy way to create the list with each name represented only once?

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Formula For Extracting Duplicate Entries In A List

Apr 4, 2008

I need a formula (I'm not sure if its possible without using VB which I have found on another thread) that I can 'drag' down to the cell Bx (where x is variable) to extract unique entries in a list of values and then display them in a shorter, more concise list - like the 'Pick From List' function does but actually display these values in seperately in a column of cells.

Hope this is making sense.

So (hopefully) to elaborate:

A1:Ax = The list of values containing duplicates
B1:Bx = The list of only unique values from column A

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Add New Entries To Drop-Down/Validation List

Sep 2, 2006

I'm trying to make a sheet that will allow users to either pick from a drop down box, or if the choice they want isn't there, to input data in the same cell. That part I have got. What I can't do is figure out how to have excel add that user input to the list of options, so that they next time the drop down box is used, that "user input" will appear as an option in the drop down. I used data validation to do all these drop downs.

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Removing Duplicate Entries From List Of Names And Addresses

Jun 12, 2006

I'm trying to remove duplicate entries from a list of names & addresses.

What I'm after is some VBA code which will examine row by row the 'post code' field and the 'Full name' field and highlight/delete duplicate entries.

Its best illustrated by an example

Full Name Address Postcode
Mr C. Verougstraete 6 somone st, Leicester HY8 9YK
Mrs R. Brazier 8 high st HY9 9LK
Mr C. Verougstraete 6 somone st, HY8 9YK

The last record is obviously a duplicate of row 2 therefore will be removed.

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Auto-Update Validation List When New Entries Added To Source

Mar 18, 2008

how to make all cells displaying an item from the list source update with new information added to list source.

Example:
Cell "A1" on worksheet 2 displays the 3rd slot of information from list source on worsheet 5. I want cell "A1" on worksheet 2 to update when the list source information in the 3rd slot on worksheet 5 is changed.

Notes:
The list is set up by naming the columns on Worksheet 5 and is set as a validation list on the other worksheets. So on Worksheet 2 column "A" has the validation

VB:
AutoLinked keywords will cause extra spaces before keywords. Extra spacing is NOT transferred when copy/pasting, but IS if the keyword uses "quotes".

List=(Coulumn A 's name on worksheet 5)

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Count The Number Of Entries In A Data Validation Dropdown List And Display A Result.

Nov 7, 2007

I am trying to do 2 things involving data validation. 1) Count the number of entries in a data validation dropdown list and display a result. 2) Use an If statement to pull the formatting from a cell into another cell.

An example would be if Cell A1="A", then show the drop down list associated with cell or sheet "!ryanB2". Alternatively, I would like to also display the number of entries in the drop down list.

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Validation Rule Dropdown List Without Duplicate Values

Feb 9, 2012

How to get rid of duplicate values in validation dropdown menu. I am using a range for the list that has a lot of repetitive values. I want to have only unique ones in the list.

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Data Validation - How To Create Dropdown List That Excludes Duplicate Data

Sep 26, 2013

I'd like to create a drop down list in data validation from a column of data that contains numerous duplicates.

For example, let's say column A contained hundreds of transactions with either North, South, East and West, how could I create a drop down list in another cell that only had four selection options?

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Duplicate Entries

Sep 24, 2009

I have been trying a number of different functions!

I have the following countif function that is searching a worksheet (Cases Closed) for the name John in Column O and excluding Solutions in column x. The problem I have is there are duplicates cases in Column C that are being counted two and three times.

Is there anyway to have the following function exclude duplicates records in Column C? Just count unique records in Column C?

=(COUNTIF('Cases Closed'!O:O,"John"))-(COUNTIFS('Cases Closed'!O:O, "John", 'Cases Closed'!X:X, "*Solution*"))

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How To Combine Duplicate Entries

Apr 23, 2013

excel.jpg

Basically I've made this up myself because what ill be working with has 100s if not 1000s of rows with many different product numbers that's quantities are different. What I've been able to do up to now is sort the spreadsheet by the product number so all the same rows are next to each other. My problem is however I need a speedy way of making these duplicate rows become one but add the total quantity basically everything in the left screenshot into the one on the right. What I've tried up to now is sorting them so there together and manually adding them up and putting them into one of the rows quantity, then delete the rest. takes to long. Another was to make a row underneath the rows I need into one but that takes more time than manually adding and deleting the rest.

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Preventing Duplicate Entries

Jun 13, 2008

I'm working on a employee evaluation form. I'm using a Pass/Fail system.
I have a cell designated for PASS & one for FAIL. In these cells, I would put
"YES" if they passed, "YES" if they failed that section.
How can I prevent someone from mistakingly entering Yes in both cells?

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Clear Duplicate Entries

Jul 14, 2008

I am trying to find a macro that will clear duplicate entries in a column of data, and then move to the next column and repeat the process until it gets to a blank column.

There are blank cells between entries in a column. I need to keep the data unsorted as the cells are linked to others in the row, therefore I dont want to delete the cells, just clear the contents.

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Highlighting For Duplicate Entries

Nov 24, 2009

I would like to check column B and if any of these values match values in column J hightlight the cell on the same row as the match on column E green. I don't know much about excel but this would be a tremendous help because i'm looking through quite a bit of data. I've tried using conditional formatting and i can't seem to get that to work for my needs. Let me know if you need anymore information.

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Eliminate Duplicate Entries WITHIN A Row

Feb 8, 2010

I have a table of data like this:

A , 1 , 1
B , 2 , 1
C , 3 , 4
D , 1 , 3
E , 3 , 3

I need to eliminate duplicate entries WITHIN a row. So, I need the table to become:

A , 1
B , 2 , 1
C , 3 , 4
D , 1 , 3
E , 3

Is there an easy way to do this for a large sample? Also, there are actually more like 8 columns of this data, if thats important.

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Preventing Duplicate Entries

Dec 11, 2012

I've generated a sheet where, based on the total run hours of a generator set using a given fuel type, we can determine which engine to run on what fuel when. The problem I've run into is that if more than one engine has the same runtime, the chart returns just the lowest numbered engine and eliminates the remaining engine(s). What I'm trying to do is make it so that when this occurs, the suggested engines show up in numerical order. For example instead of 1, 1, and 1 showing up on the chart, something like 1, 2, and 5 will show when they all have 0 run hours. I've attached my chart below with some engines having the same runtimes. RunOrder.xlsx

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Prevent Duplicate Entries..

May 8, 2009

New here, I wanna do a "Prevent Duplicate Entries" into my column i try the following: http://www.mrexcel.com/articles/prev...duplicates.php
http://www.theexceladdict.com/_t/t040818.htm

They all work well but if I'm using copy and paste It doesn't work! why is tat so?
Second issue will be i'm wanna do prevent duplication for the whole column not just one cell.

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Eliminate All Of The Duplicate Entries

Feb 5, 2009

I have a spreadsheet that has account numbers listed multiple times. I need to eliminate all of the duplicate entries...Is there a formula for this...?

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Stop Duplicate Entries In A Row

May 25, 2009

=COUNTIF($A$1:$D$100,A1)=1
however I don't know how to change that to suit my needs (or even if it is at all possible to change it to suit my needs)

I will try my best to explain how my spreadsheet is set up as unfortunately I am at work and I can not use the method to show you the spreadsheet.

My spreadsheet:
I already have Data Validation in use from a list that I created. I use the same validation list in Columns C, E, G, I, K-BA

I also use validation list in other cells, and it is OK if these are duplicated throughout the row.

The only cells that should not contain duplicate information are the ones from C, E, G, I, K-BA

Basically I want to stop someone accidentally chosing the same option from the list within the same ROW.

Just in case it makes any difference I should let you know that I have already had help from the forum regarding macros for this same spreadsheet, here is the macro that is currently running just in case it makes a difference if there is an answer to my current problem.

Option Compare Text 'A=a, B=b, ... Z=z
Option Explicit

Private Sub Worksheet_Change(ByVal Target As Range)

Dim Cell As Range
Dim Rng1 As Range

On Error Resume Next
Set Rng1 = ActiveSheet.Cells.SpecialCells(xlCellTypeFormulas, 1)
On Error GoTo 0
If Rng1 Is Nothing Then
Set Rng1 = Range(Target.Address).........................

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Stop Duplicate Entries

Aug 24, 2006

I want to use (VBA) data vaildation to restrict duplicate entries.

Worksheet Name = "Metal Type"

NoDupe Cell = B15 (allowing text and numbers)

Range to check = (Sheet)="Metal Type" (Range)=A21:A100

Error = Message box "Enter Unique Name in Cell B15"

Then Exit Sub

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Count Of Duplicate Entries

Sep 14, 2006

there are unique entries like AU0896 etc. that are repeated in my list.
my job is to find how many unique entries there are and add the count at the end so, basically if there are 6 AU0896 entries, then I must create a AU08966 value.

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Duplicate Entries, Validate Only One

Jan 22, 2007

In my spreadsheet, on ( sheet A) I pick up a value to a range (O2:O22) from other worksheet (sheet B), the value is validated when a cell in the same range but other column (A2:A10) reach a specific criteria.

But in the same column if the criteria is typed again I gone a have the same value on range( O ), and I dont want that, because this value represents a total for a day, and is to be added to other cell.

I'm using this, to pick up the data
Ex:
(A2:A10) Criteria
(O2:O10) value picked up

on SheetA, Sumif(sheetBA10:A40,A2,SheetBK10:K40)

How can I count only one of the values picked up from sheet B?

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Find Duplicate Entries

Feb 14, 2007

Got a workbook with 4 worksheets and sometimes we need to cut and paste a row from one worksheet to another, now thats easy now as we are all human and sometimes it gets copied and we have duplicate logs.

Now each sheet has usually not got that many rows in it, but that spreadsheet is getting sent to the highest people in the company and any mistakes look poor.

What i'm looking for is a way that i can highligh any rows that a duplicated in each worksheet. I can do it in each worksheet using conditional formatting with something like = COUNTIF($A8:$A$20,A8)>1. but don't know how to check that is not on any other worksheet. On every worksheet only need to check Col A for the duplicate information

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Remove Duplicate Entries

Mar 7, 2007

Wihitn a large SS I have a column which has a number of entries that may include an amount of duplicate entries. Till now I have been using Sort and them manually deleting the duplicates is anyway that I can select just the Column and then without sorting go down and if a duplicate is found, then the duplicate would be deleted. Meant to say the dta is numeric.

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If Statement For Duplicate Entries

Mar 27, 2007

I have a spreadsheet which has data in column A & B. I trying to do an if statement to state "YES" if data in both A and B has been duplicated. EG 111 in (A) & 222 in (B) are a PAIR, im need an if statemnet in Column (C) to say if this PAIR are duplicated in these two columns return "YES". I have tried THREE different methods to do acheive this which are in the attached document. The main issue I am having is the iff statement is returning yes for some of the number when thye are completely different. I have used concatenate, & and tried to multiply the two values to try to make it unique. I have an example of each in the separate tabs.

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Counting Duplicate Entries

May 21, 2007

I am trying to determine wether there are duplicate entries within a range and have then counted also. Example:

I have a list if zip codes and I want to find out how many of each zip code are there. If I have a list with:

12345
12345
12345
12346
12346
12347

I want to have it tell me there are 3 of "12345" and 2 of "12346", possibly next to the entry?

12345 3
12345
12345
12346 2
12346
12347

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Apr 3, 2013

I'm trying to get data totals for multiple entries and haven't been able to figure out how to do this using a pivot table.

For example:

A B
Ben 2
Bill 1
Jane 3
Bill 4
Dave 7
Jane 4


Would make it

Ben 2
Bill 5
Jane 7
etc.

this list is 3700 cells long.

Is there an easy macro or another way of doing this? I want to generate a list that gives all data totals but just lists each persons name once. I treid attaching the file but it wont let me! here is the link... [URL]

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Apr 24, 2014

highlighting the duplicate entries in the same date comparing C:C data.

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Removing Duplicate Entries From Two Lists?

Aug 15, 2008

Let's say I have two mailing lists, A and B.

A:

bob@bob.com
jeff@jeff.com
tom@tom.com
cindy@cindy.com
jose@jose.com

B:

fred@fred.com
jeff@jeff.com
angus@angus.com
cindy@cindy.com
chuck@chuck.com

Now I want to create list C, a modified version of list B, which is made up of everybody in list B, EXCEPT for those people who are also present in list A (in this case, Jeff and Cindy).

So basically list C should look like this:

C:

fred@fred.com
angus@angus.com
chuck@chuck.com


What would be the fastest and most efficient way to create list C?

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Don't Allow Duplicate Entries Across Multiple Columns

Jan 14, 2010

how i can set 'Data Validation' to stop me from entering duplicate values across multiple columns, i can set it for a single column i.e. A1 to A100 but i am after this but for something like A1 to H100.....?

I am currently using this formula in Data Validation:
=COUNTIF($A$1:$A$100,A1)=1

I need something to do this but for multiple columns.

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Jun 23, 2014

I have a userform created to enter clients information which by submitting goes to sheet1 ..

Now the challenge is i want to make sure that no duplicate entries are entered thru userform.

And if duplicate company name is entered then all the client details of the other fields of the userform shall display the values of previous entry so that i can edit the latest changes to the sheet.

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Jun 28, 2014

I currently have a sheet of 20,000+ items and 2 columns. My first column is an part number and the second is a date. Each part number can be show multiple times but will have a different date each time. What I want to do is that the first occurrence of each part number (and corresponding date) and put it in sheet 1, the second occurrence of each part number and date into cell 2, third in cell 3 and so on... not all part numbers are showing multiple times, only certain ones.

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How Do I Conditionally Delete Duplicate Entries?

Aug 8, 2008

I have 2 columns of data, apprx. ~25,000 rows.

Col 1 is user IDs and Col 2 is there status (pending, conditional, approved, rejected)

Col1 IDs are not unique because they can have multiple statuses associated with them in Col2. An ID can go from pending to conditional to either approved/rejected and all these are included in the raw data file. I want to remove all duplicate ID rows and keep the ID row with the last known status.

For example:

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May 13, 2009

I've got this code for prevent duplicate entries, But I wondering if it's possible to add a copy rows to it? For Example

Columns C
ItemID ItemName
11 QWE
22 ASD
33 ZXC

So now I enter 22 in ItemID for this working code it will pop up a MsgBox saying Aready exist, Is it possible to add a code so that it will copy the existing copy and paste into the active row?

Private Sub Worksheet_Change(ByVal Target As Range)
Dim r As Range
Dim ans As String
Const myCol As Long = 3
If Intersect(Target, Columns(myCol)) Is Nothing Then Exit Sub
Application.EnableEvents = False.........

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Copying Row With Prevent Duplicate Entries

May 13, 2009

I've got this code for prevent duplicate entries, But I wondering if it's possible to add a copy rows to it? For Example

Columns C
ItemID ItemName
11 QWE
22 ASD
33 ZXC

So now I enter 22 in ItemID for this working code it will pop up a MsgBox saying Aready exist, Is it possible to add a code so that it will copy the existing copy and paste into the active row?

Private Sub Worksheet_Change(ByVal Target As Range)
Dim r As Range
Dim ans As String
Const myCol As Long = 3
If Intersect(Target, Columns(myCol)) Is Nothing Then Exit Sub

[Code] ........

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Jun 20, 2013

I have a spreadsheet I use for creating golf score cards. I select the golfers from a drop down list and display a message if a golfer has already been selected. The ranges I want to use are A7:A15, A25:A33, A43:A51, A60:A68. My code is below and I am getting an error saying 'compile error, argument not optional' and UNION is highlighted.

Code:
Private Sub Worksheet_Change(ByVal Target As Range)
If Intersect(Target, Union(Range("A7:A15, A25:A33, A43:A51, A60:A68"))) Is Nothing Then
With WorksheetFunction

[Code]....

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Dec 5, 2009

I have a lengthy excel spreadsheet in which I catalog all of my Karaoke song collection. I would like to be able to automatically locate (not delete) cells in which there are duplicate song titles. For my purposes just finding these items quickly so I may deal with them in a manner I've already developed is all I want to do. VBA, Macro or whatever would be appreciated. I'm a relative novice with macros and VBA.

For example row 12 may have the song title "Crazy" in column C and later row 1200 may have the same song title. Manually searching the spreadsheet for dupliates is way too time consuming so I think it can be seen why I'm looking to unlock the power of excel to do this for me.

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Jan 15, 2010

Writing this workbook in 2007, but it will be used in 2003. Have searched but can't find answer to this. I have a 5-column (A to E) table array and I'm using VLOOKUP in several other cells to return values in col2, 3, 4 & 5 with my lookup value being col 1. However, col 1 will contain numbers which occur more than once. How can I get VLOOKUP (or something else?) to pick the last occurence (lowest row) and use that one? Also, the array will be sorted - smallest to largest - as the rows go down - how will the SORT work on duplicate entries? I'd like, if possible, for the entry made most recently to be the lowest of the duplicate entries so that VLOOKUP (or whatever) will pick that one to use. Will any kind of SORT do that?

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Dec 30, 2009

Option Explicit
Dim myCount As Byte
Dim myColumn As String
Dim myRow As Long
Sub Worksheet_Change(ByVal Target As Range)
myCount = 0
If Range("B" & myRow).Value <> "" Then myCount = myCount + 1
If Range("C" & myRow).Value <> "" Then myCount = myCount + 1
If Range("D" & myRow).Value <> "" Then myCount = myCount + 1
If Range("E" & myRow).Value <> "" Then myCount = myCount + 1
If myCount > 1 Then....................

The above code pops up the message box when a second entry is made within the specified range, but OK button does not function, contents are not cleared, and Excel locks up.

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