You can check all the user's grants. Check grants for the employee_col_ro user:
mysql> SHOW GRANTS FOR 'employees_ro'@'%'\G*************************** 1. row ***************************Grants for employees_ro@%: GRANT USAGE ON *.* TO `employees_ro`@`%`*************************** 2. row ***************************Grants for employees_ro@%: GRANT SELECT (`first_name`, `last_name`) ON `employees`.`employees` TO `employees_ro`@`%`*************************** 3. row ***************************Grants for employees_ro@%: GRANT SELECT (`salary`) ON `employees`.`salaries` TO `employees_ro`@`%`
Check grants for the dbadmin user. You can see all the grants that are available to the dbadmin user:
mysql> SHOW GRANTS FOR 'dbadmin'@'%'\G ...
