use SQL server is much better than use Arcgis Pro.
 
Here is example: 
I want to know how many unique fire unit code and what they are. I want to compare old unit code with current unit code to see what unit code missing from 2 different layers. 

 
 
 
To use ArcPro (Left side):
You can use select by attribute tool, new selection, where unite code is equal to, the drop down list shows all possible unique unit code. 
 
 
 
 
To use SQL server query ( right side ):
Use disticnt or group by key word to run sql query. 
 
 
SQL query is much better, I can copy result to excel, then send to COTS(commercial off the shell) application vender, firstWatch
 

 
 I can run 2 sql query to compare old table with current table to see what unit code is missing. Also send to COTS(commercial off the shell) application vender, firstWatch.  
 
 
 
 
In ArcPro, I just can do none of them. 
  