You may already know that MySQL 8.0 is coming with a nice requested feature : ROLES
A role is a named collection of privileges. When you watch some slidedeck about MySQL 8.0 and ROLES, some times you can see a graph illustrating the ROLES and their eventual hierarchy. From the documentation, it seems those graphs are made using the ROLES_GRAPHML() function.
I tried it… and my first try is not really what I was expecting…
To create the input file I used the following command:
mysql> SELECT ROLES_GRAPHML() into outfile '/var/lib/mysql-files/test_roles.graphml'; Query OK, 1 row affected (0.19 sec)
Then I used yEd to open the file and generate a picture:
As I said, this is not really what I expected… Let see what we need to do to achieve the expected result:
This is the final result (click to enlarge):
I hope this small procedure helps you.
In case you are looking for more information about roles, please check this presentation from @datacharmer.
And of course, thank you Kristofer Älvring for the help in finding the right settings 😉