How do you use data validation for unique values in Excel?

How do you use data validation for unique values in Excel?

Allow unique values only

1. Click the Data tab, then the Data Validation menu and select Data Validation.
2. Click the Allow: drop-down button and select Custom as Validation criteria.
3. Enter the following in the Formula bar: =COUNTIF(C$3:C$7,C3)<2.

How do I allow only unique values in Excel?

In Excel, there are several ways to filter for unique values—or remove duplicate values:

1. To filter for unique values, click Data > Sort & Filter > Advanced.
2. To remove duplicate values, click Data > Data Tools > Remove Duplicates.

How do I remove duplicates in data validation list in Excel?

You also can remove the duplicates from the table list firstly, then create the drop down list.

1. Select the column range you want to use in the table, the press Ctrl + C to copy it, and place it to another position by pressing Ctrl + V.
2. Then keep selecting the list, click Data > Remove Duplicates.

How do I create a dynamic data validation list in Excel?

Creating a Dynamic Drop Down List in Excel (Using OFFSET)

1. Select a cell where you want to create the drop down list (cell C2 in this example).
2. Go to Data –> Data Tools –> Data Validation.
3. In the Data Validation dialogue box, within the Settings tab, select List as the Validation criteria.

Is there a unique function in Excel?

The Excel UNIQUE function returns a list of unique values in a list or range. Values can be text, numbers, dates, times, etc. array – Range or array from which to extract unique values.

Is unique Excel?

The Excel UNIQUE function can extract a list of distinct values, or a list of values that only occur once, i.e. unique values. It can return a unique or distinct list from one column or from multiple columns. array is the range or array you want the unique values returned from.

How do I keep only duplicates in Excel?

Show only duplicates with Conditional Formatting and Filter functions

1. Select the values you want to show only duplicates, and click Home > Conditional Formatting > Highlight Cells Rules > Duplicate Values.
2. Click at the column header Name, and click Data > Filter to enable the Filter function.

How do I get unique values between two columns in Excel?

Find unique/duplicate values between two columns with formula. The following formula can also help you to find the unique values, please do as this: In a blank cell B2, enter this formula =IF(ISNA(VLOOKUP(A2,$C$2:$C$13,1,FALSE)),”Yes”,””), and then drag this cell’s AutoFill Handle to the cell B15.