After data entry in Excel, we typically use advanced filtering to handle deleting duplicate records, and Excel 2007 retains this feature while adding a "Remove duplicates" button to make the operation simpler and more flexible.
First, traditional methods: using advanced filtering
The steps are as follows:
1. Click the data area to select any one of the cells. If you are filtering only some of the fields and records, you can select this section first. Note: Only the contiguous selected rectangular area is valid.
2. Click the Data tab, and then click the Advanced button in the Sorting and Filtering section of the toolbar below, as shown in Figure 1.
Figure 1 Sorting and filtering function selection
3. In the Advanced Filter dialog box that pops up, select the Choose Duplicate Record option. The range of filter areas appears automatically in the list area box to see if it is correct, and you can select it incorrectly by using mouse drag; In addition, select how you want the filtered results to appear, where you select "Show filter results in an existing area." As shown in Figure 2.
Figure 2 Setting advanced filtering
4. Click "OK" button, the filter is complete, the exact same record except the first one is reserved, the other is deleted. As shown in Figure 3.
Figure 3 Completing the filter
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