grant select on *.* to current_role;
ERROR 0L000: Invalid definer
revoke select on *.* from current_role;
ERROR 0L000: Invalid definer
revoke all, grant option from current_role;
ERROR 0L000: Invalid definer
create role r1;
grant insert on test.* to r1;
grant r1 to current_user;
set role r1;
select current_role();
current_role()
r1
grant select on *.* to current_role;
show grants for current_role;
Grants for r1
GRANT SELECT ON *.* TO 'r1'
GRANT INSERT ON `test`.* TO 'r1'
revoke insert on test.* from current_role;
show grants for current_role;
Grants for r1
GRANT SELECT ON *.* TO 'r1'
revoke all, grant option from current_role;
show grants for current_role;
Grants for r1
GRANT USAGE ON *.* TO 'r1'
drop role r1;
