Identifying Duplicate Values in an Excel List
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I appreciate the help! Matt How do I find a word contained in a cell that matches a word in a list in a separate sheet?
Look up values vertically in a list by using an exact match To do this task, you can use the VLOOKUP function, or a combination of the INDEX and MATCH functions. As a result, I would know if someone was added to the set and so is present on one set but not the other OR there's a discrepancy in someone's email address thereby letting me know that I need to double check which email is accurate. E if column AX sheet 1 has a number that matches Column A sheet 2 it will return with the name from Column B sheet 2 Is there a way to do this with two worksheets instead of columns in the same worksheet?
Look up values in a list of data - By concatenating asterisks before and after the value in C1, the formula will count the substring in C1 anywhere it appears in each cell of the range. You can also look up on specific values, rather than a range using the function.
For good measure, I'll also describe a worksheet function-based approach that works in any version of Excel. As shown in Figure 1, you can easily identify duplicate invoice numbers in a list. One way to do so is to click on a single cell and then press Ctrl-A. Figure 1: Excel's Conditional Formatting feature makes it easy to identify duplicate values in a list. Figure 2: Excel 2007 and later offer the ability to filter cells based on color. Figure 3: You can easily clear conditional formatting from a worksheet in Excel 2007 and later. If you're using Excel 2003, you don't have the ability to filter by color, but you can isolate duplicate values by way of the COUNTIF worksheet function. The Fill Handle is the little notch that most users drag down a column when copying formulas. About the author: David H. Ringstrom, CPA heads up Accounting Advisors, Inc. David also presents monthly for AccountingWEB partner CPE Link. Ringstrom, CPA, is an author and nationally recognized instructor who teaches scores of webinars each year. His Excel courses are based on over 25 years of consulting and teaching experience. Hi David, Please with your work. You save the hours of my life! Your method is working not with numbers only but with words and expressions too. I've got a list with names and descriptions of more than 10 000 PowerPoint templates and all of them must be unique. I spent a lot of time to find the easy and sharp description how to solve this problem and your article has opened my eyes. Thank you very much! I have a list of several names in column B. I want to identify each time that name was duplicated without changing the format of the original entered data. Example: I selected column B, selected conditional formatting, new rule, unique or duplicate value, format, picked a color green, clicked ok. This changed the color to all duplicates making it impossible to find when the name was first entered because it is green as well. I need to first entry to keep the original format but highlight each time it's entered afterwards. In Excel 2007 and later, select column B, choose Conditional Formatting from the Home tab, choose New Rule, and then Use a Formula to Determine which Cells to Format. This is a great question, and I'll write up the steps in detail in a forthcoming article that I'll link to this thread. The only way that comes to mind is to create a macro in Excel that would loop through the sheets and compile a list of any duplicate values. To do this I'd create a collection in my code, which only allows a value to be added once. If that line of code didn't complete cleanly, I'd log the sheet name in my list of duplicates. Hopefully this will help you in your cause, but it'll be meaningless if you're not familiar with Visual Basic for Applications in Excel. The COUNTIF function that I typically use only works within a single sheet, not through multiple sheets like SUM can. In my illustrations column A has duplicate numbers. You're correct that column B has unique values, but I'm not testing anything in column B, but rather showing how to identify duplicate check numbers, invoice numbers, etc. Thank you for your question, and just let me know if anything is still unclear after this explanation. I have 4 days member's data. It's thousand data for each day. I already know how to mark the members who always active for that 4 days. By use format duplicate value. But i have a problem how to mark the member who not active for the last day at the 4th day. Can you help me? I already try to block the cell which contain members ID who active in the 1st day until the 3rd day and order to found that not equal in the 4th day data. But the excel said that 'the reference cannot be used in a conditional formating formula. What wrong with my step? Hello Sir, I'm wanting an excel spreadsheet to be designed for properties to be inputted so that it shows if the property has a duplicate so for example if we installed double glazing on 1 milton avenue, L14 6TF and it is installed again 2 weeks later it will show up on the database that it has been installed and the install date There are cases when you need to identify values using different criteria. For example, if you have two data lists i. In this situation, you can use different comparison criteria, for example finding duplicates by looking at the left part of the email address, the first name and last name. In my case, I use COUNTIF function in a new column for each condition or criteria I want to consider and defining the range to consider. It will show a positive integer if there is any duplicate. Then, you can sum all these integers in a new column and then you can filter the data to show those that are greater than 0. Regards, Julian I faced a trouble after the below step : This collapses the list to show just the duplicate values, which you can copy and paste to another worksheet, or otherwise manage, as shown in the inset in Figure 2. Its not just the copied duplicate cells. In Excel, you have several ways to filter for unique values or remove duplicate values: 1. To remove duplicate values, use the Remove Duplicates command in the Data Tools group on the Data tab. To highlight unique or duplicate values, use the Conditional Formatting command in the Style group on the Home tab.
I need to first entry to keep the original format but highlight each time it's entered afterwards. The result is actually an array that looks like this: TRUE;FALSE;FALSE;FALSE;FALSE Notice that if we have even one TRUE in the array, we know a cell contains at least one thing in the list. Is there an easier way to do this than how I'm doing it. The COUNTIF function that I typically use only works within a single sheet, not through multiple sheets like SUM can. Lessay, in one of them it shows: Peter. For more information, see and. Excel Formula Training Formulas are the key to getting things done in Excel. Then in the end you have the Main sub which simply gathers the input from the user and calls the Exists method. Challenge: find out which entries in one list appear in another list. You look up data to quickly and efficiently find specific data in a list and to automatically verify that you are using correct data. Regards, Julian I faced a trouble after the below step : This collapses the list to show just the duplicate values, which you can copy and paste to another worksheet, or otherwise manage, as shown in the inset in Figure 2. Here's how to solve it.
