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Excel adds the same word before the column.
Excel adds the same word before the column, as shown below:

How to use cell formats and functions: Open the Excel program and open the workbook that needs to be processed. Select the column to prefix. You can select an entire column by clicking the column header, or select some columns by dragging with the mouse. Right-click the selected column and select Format Cell.

In the pop-up cell format dialog box, select the custom tab and find the common format type. In the common format input box, enter the prefix to be added, such as prefix _. Click OK to finish setting the cell format.

At this point, the selected column should have been prefixed. In this way, the purpose of adding a prefix to a column of data is achieved by using the cell format setting of Excel. Cell format is a powerful tool to control the appearance and behavior of cells in Excel. If you need to generate new data in cells, or calculate and convert data, you may need to use Excel functions and other functions to achieve it.

Excel functions:

1, data organization and storage: Excel organizes and stores data in the form of rows and columns, which is convenient for users to input, edit, organize and view a large amount of data. This data structure makes Excel very efficient when dealing with large amounts of data.

2. Calculation and data analysis: Excel provides a wealth of mathematical formulas and functions, which can be used for calculation, statistical analysis, data conversion and other operations. These functions can help users to process and analyze data quickly and accurately, and provide support for decision-making.

3. Data visualization: Excel supports various chart types, such as histogram, line chart and pie chart. , which can help users display and interpret data intuitively. By converting data into charts, users can better understand and analyze the data and discover the laws and trends in the data.

4. Powerful data processing ability: Excel has powerful data processing ability, and can process data through operations such as sorting, filtering, searching and replacing.