how Excel makes date yy-mm-dd into yy/mm/dd/format
1, open the Excel table, this table is I do the demonstration case use, only for reference. Because I modified the date, so I only created a new date column.
2, select the column that needs to be modified, it is best to choose all, so you can change it once. When selected, click the right mouse button, and in the menu that pops up, select format Cells.
3, in the cell format screen to find the number below the customization, we will find our custom type YY-MM-DD.
4, we can select the type of YY/MM/DD we need in the marquee, or we can add the Yy/mm/dd type manually.
5, after the finished, click OK, we will find that all a column of dates are the type of yy/mm/dd we need.
Of course, can also be batch, batch selection method is first selected and then press and hold the keyboard CTRL + A can select all