在Excel中处理数据时,防止列中出现重复项对于维护数据完整性至关重要。本指南提供了有关如何在Excel中防止重复项的详细说明。 使用数据有效性功能防止重复项 使用Kutools for Excel快速防止重复项 使用数据有效性功能防止重复项 例如,我正在输入身份证号码到一组单元格(A1:A100),我想确保输入到区域A1:A100的所有项目编号都是唯
Today I'll tell you how to prevent duplicates from appearing in a column of your Excel worksheet. This tip works in Microsoft Excel 365, 2021, 2019, 2016, and lower. We covered a similar topic in one of our previous articles. So you should knowhow to automatically highlight duplicates in...
Once the spreadsheet is open, view Column A and rows A3 through A12. Select these as it is where you will be looking to prevent duplicates. At the top of the Excel ribbon is the tab “Data”. Click this and then click the “Data Validation” option, then select “Data Validation” fr...
4. Click OK to close the dialog, and from now on, a warning dialog pops out when you try to enter a special character in the selection. Tip. If you want to stop typing duplicate values in a column, please try to use the Kutools for Excel’s Prevent Duplicate as shown in the follow...
Popular Features:Find, Highlight or Identify Duplicates|Delete Blank Rows|Combine Columns or Cells without Losing Data|Round without Formula... Super Lookup:Multiple Criteria VLookup|Multiple Value VLookup|VLookup Across Multiple Sheets|Fuzzy Lookup... Advanced...
Prevent Duplicate Entries In A Range If you want to prevent duplicate data from being entered into a range, here is a pretty simple solution by usingData Validation. Select the range of cells in which you want to prevent duplicates (for example, A1:A50). ...
Highlight only second or later occurrences of a duplicate value in a column.Highlight first occurrence only:Select your range (e.g., F2:F11). Use the formula:=COUNTIF($F$2:$F2, F2)>1 Format the result with dark red color.Highlight duplicates across multiple columns:Select your range....
A duplicate could appear in multiple cells sequentially, but it may also be hidden further down a sheet, in another column, or in a different sheet within the workbook. Duplicates are not always bad. For instance, you may have a sheet in your workbook that summarizes other sheets, causing...
Each of the column labels in the data set must be unique Duplicate headings could cause problems when running an Advanced Filter. Tip: If possible, format your data as a named Excel table. The table will automatically prevent duplicate column headings, by adding numbers, if needed Subsequent ro...
Indexed fieldsIf theIndexedproperty of a field in the table is set toYes (No Duplicates), the corresponding column in the source worksheet or range must contain unique values. Go to the next steps to run the import operation. Start the import operation ...