When working with the data with many columns and you may need to sort all columns from left to right alphabetically. Please follow the steps below for details:
Step 1: Click any cell in the data range you want to sort (in this example, the 2nd column in red to mark);
Step 2: Click the "Home" tab from the ribbon;
Step 3: Click the triangle after the "Sort&Filter" in the "Editing" section;
Step 4: Click "Custom Sort" from the drop-down list;
Step 5: Click the "Options" button in the "Sort" window;
Step 6: Check the "Sort left to right" box in the new window, then click "OK";
Step 7: In the "Sort" window,
1. Select the sort row in the first box (Row 1 in this example);
2. Select "Cell Values" in the second box;
3. Select "Z to A" in the third box in this example.
Step 8: Click "OK" and the data columns will be in the order you want (the column in red switches the position in this example).