Today, when processing the data set of the csv file, I found that all the data is concentrated in the first column, and there is no "," separator between the data.
Before processing:
After processing:
Solution: Press and hold "SHIFT", "CTRL" and "↓" at the same time to select all the first case, click "Data" in the menu bar, select Columns, and then select "Separator"-"Tab"--- Finish! (What is the delimiter of the csv file, you can choose whatever here.)