trionoble.blogg.se - Excel find duplicates in named list

As a result, value TRUE is displayed in the cell E3. Our list contains duplicates and SUMPRODUCT formula output is number 2. Since 0 is not greater than 0, the final result will be FALSE. If there are no duplicates in the list SUMPRODUCT output array will have all 0 items and formula output will be 0. Check the duplicates in the list with the SUMPRODUCT and COUNTIF functionsĬOUNTIF function counts the number of the occurrences of each item in the list, resulting in the array: items.įormula part >0 is checking if the SUMPRODUCT result is greater than 0, retrieving TRUE if there are duplicates.

Insert the formula: =SUMPRODUCT(COUNTIF(Product_ID,Product_ID)-1)>0įigure 4.

To apply the function we need to follow these steps: The parameters range and criteria in the COUNTIF function are the named range Product_ID. The array1 in the SUMPRODUCT function is the formula COUNTIF(Product_ID,Product_ID)-1. =SUMPRODUCT(COUNTIF(Product_ID,Product_ID)-1)>0 Creating a named range Product_ID for column “Product ID”

Write the name for the cell range and press enterįigure 3.

Select the cell range that should be named.

To create a named range we should follow the steps: In order to make the formula more clear, we will create a named range Product_ID for cell range B3:B7. We want to check if there are duplicate values in the column “Product ID” and to write TRUE in the cell E3 if there are matchings.

Table structure for the example Check Duplicates in the List with SUMPRODUCT and COUNTIF Functions The idea is to check if there are duplicate values in the “Product ID” column and to return TRUE in the cell E3 if the list contains duplicates.įigure 2. Our table consists of 2 columns: “Product ID” (column B) and “Amount” (column C). Setting up Our Data for Finding Duplicates in the List

criteria – a criteria in the range which we want to count.

range – ranges where we want to apply our criteria.

The parameters of the COUNTIF function are:

– an optional argument array for the function.

array1 – an array of the values that need to be summed.

The parameters of the SUMPRODUCT function are: Check duplicates in the list Syntax of the SUMPRODUCT Formula This step by step tutorial will assist all levels of Excel users in checking if the list contains duplicates.įigure 1. With the combination of SUMPRODUCT and COUNTIF function Excel allows us to check if there are exact matchable values in the list.