How to delete duplicate values in a column (2024)

FAQs

How to delete duplicate values in a column? ›

To remove duplicate values, click Data > Data Tools > Remove Duplicates. To highlight unique or duplicate values, use the Conditional Formatting command in the Style group on the Home tab.

To remove duplicate values, click Data > Data Tools > Remove Duplicates. To highlight unique or duplicate values, use the Conditional Formatting command in the Style group on the Home tab.

To remove the dataframe rows where the values in all of the specified columns are duplicated, we can use either the drop_duplicates() method or chaining groupby() and first() (or last(), or nth()). The initial dataframe remains untouched unless we modify it in place or reassign it to a variable.

Click on the Data tab in the ribbon. In the Data Tools group, click on Remove Duplicates. In the Remove Duplicates dialog box, make sure all columns are checked and then click OK. This will remove all duplicate values from the selected range of cells, leaving only unique values.

Remove duplicate values

Select the range of cells that has duplicate values you want to remove. Tip: Remove any outlines or subtotals from your data before trying to remove duplicates. Select Data > Remove Duplicates, and then under Columns, check or uncheck the columns where you want to remove the duplicates.

To begin with, select the range in which you want to ddelete dupes. To select the entire table, press Ctrl + A. Go to the Data tab > Data Tools group, and click the Remove Duplicates button. The Remove Duplicates dialog box will open, you select the columns to check for duplicates, and click OK.

One of the easiest ways to remove duplicate data in SQL is by using the DISTINCT keyword. You can use the DISTINCT keyword in a SELECT statement to retrieve only unique values from a particular column.

To delete duplicates, we use a function drop_duplicates in Pandas. An argument “keep” can also be used with drop_duplicates. keep = 'first' keeps the first record and deletes the other duplicates, keep = 'last' keeps the last record and deletes the rest, and keep = False deletes all the records.

Excel will remove the duplicate values from the selected range of cells. Using the "Alt+A+M" shortcut key to remove duplicates in Excel can save you time compared to using the menus to initiate the remove duplicates process.

Removing duplicates based on two columns in Excel is easy. You can either use the Remove Duplicates Feature and select two columns, or manually combine columns and then use Remove Duplicates on that single column.

How do you highlight duplicate rows based on one column in Excel? ›

Highlight Duplicate Rows

Select the column you just filled. Go to the 'Home' tab, click 'Conditional Formatting', then 'Highlight Cells Rules', and select 'Duplicate Values'.

To remove duplicates on specific column(s), use subset . To remove duplicates and keep last occurrences, use keep .

To remove duplicate values based on only one column of the table in SQL, use the DELETE command along with self-join on the table. Self-Join helps in finding the duplicate values in the table, which can be deleted using the DELETE query.