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...
点击OK完成。现在,当您输入重复的数字时,Excel 将阻止输入并向用户发出错误消息,它将显示如下: 这个公式的解释: = COUNTIF($ A $ 1:$ A $ 100,A1)= 1,用于 Excel 的数据验证功能,以确保指定范围内的每个条目都是唯一的。其工作原理如下: COUNTIF($A$1:$A$100, A1):计算单元格 A1 中的值在范围 $...
When doing data entry work in Excel, you may want to prevent entering duplicate entries in a column or a range of cells.Thankfully, there is a feature in Excel that allows you to do precisely this – and it’s called Data Validation....
Once the spreadsheet is open, view Column A and rows A3 through A12. Select these as it is where you will be looking to prevent duplicates. At the top of the Excel ribbon is the tab “Data”. Click this and then click the “Data Validation” option, then select “Data Validation” fr...
4. Click OK to close the dialog, and from now on, a warning dialog pops out when you try to enter a special character in the selection. Tip. If you want to stop typing duplicate values in a column, please try to use the Kutools for Excel’s Prevent Duplicate as shown in the follow...
4. After finishing the settings, click OK to close this dialog. And now, when you input spaces within your data in the column which you have specified, you will get the following warning message.Related articles: How to prevent duplicate entries in a column in Excel?
How to Prevent Duplicates in Google Sheets Step-by-Step Guide to Applying Data Validation Follow these steps to prevent duplicates in the range A1:G using a custom formula: Formula: =LET(rule, COUNTIF($A$1:G, INDIRECT(ADDRESS(ROW(), COLUMN(),))), ISBETWEEN(rule, 1, 1)) ...
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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...