DEDUPE_LIST

Extract a list of unique values from a range

Formula definition

=UNIQUE(FILTER(FLATTEN(range),FLATTEN(range)<>""))

Function Details

This function simplifies creating a clean, deduplicated list of unique values from any given cell range. Often in spreadsheets, data spans across multiple columns and rows, which can lead to duplicates or blank cells that clutter the dataset. DEDUPE_LIST quickly compiles only the unique entries, removing any blanks for a concise list of distinct values. To use the DEDUPE_LIST function, provide a cell range containing your data. This function will return a single-column list of unique, non-blank values, flattening any multi-column range into a single set of results.

Function name: DEDUPE_LIST

Function description: Extract a list of unique values from a range

Argument placeholders: range

Formula definition: =UNIQUE(FILTER(FLATTEN(range),FLATTEN(range)<>""))

Argument description (range): The range of values to deduplicate

Argument example (range): A2:B30

What is a Named Function in Google Sheets?

Named functions enable the creation of custom, reusable formulas that mimic built-in functions, streamlining calculations and data manipulations. These functions simplify complex formulas, making spreadsheets more readable and less prone to errors. By encapsulating intricate logic within a single function call, they enhance consistency across your data. Utilizing named functions reduces the need to write lengthy formulas repeatedly, thereby improving workflow efficiency and productivity in data analysis and management.

How to Add This Function to Google Sheets (Easy Download & Import)

Follow these simple steps to download and import the function into your spreadsheet. This method is the quickest and easiest way to add the named function to your Google Sheets document, but will not include the argument description and examples:

Download the Formula: Click on the download button at the top of this page to download a file with the formula.
Open Google Sheets: Open your Google Sheets document, from the top menu select Data > Named functions. Click Import function.
Import the function: Select Upload and select the file you downloaded with the function. Click Import all or select which function(s) to import and click Import.

Once added, the function will be ready to use in your document like any other built-in function. Simply type the function name and provide the required inputs to use it in your calculations.

How to Add This Function to Google Sheets (Manual)

Follow these simple steps to integrate the function into your spreadsheet:

Open Google Sheets: Open your Google Sheets document, from the top menu select Data > Named functions. Click Add new function.
Copy the Formula: For each input copy and paste the information from above.
- Copy the name of the function to the Function name input.
- Copy the description of the function to the Function description input.
- Copy each placeholder one at a time into the Argument placeholders input, if there are any placeholdes.
- Copy the formula of the function to the Formula definition input.
Click Next.
Add additional details: Optionally you can add a description and example for the placeholders.
Save the function: Click Create to add the function to your document.

Once added, the function will be ready to use in your document like any other built-in function. Simply type the function name and provide the required inputs to use it in your calculations.