I have the following data:
| User ID | Category | Subcategory | 
 | 
| 02 | A | Sub1 | 
 | 
| 02 | B | Sub2 | 
 | 
| 03 | C | Syb7 | 
 | 
I would like to group the data by User ID as follows:
ID
CategotyA (contains the number of subcategories)
CategoryB (contains the number of subcategories)
CategoryC( contains the number of subcategories)
example output
| User ID | CategoryA | CategoryB | 
 | 
| 02 | 20 | 11 | 
 | 
| 03 | 5 | 55 | 
 | 
| 04 | 9 | 21 | 
Could someone help by providing the process and parameter needed?