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#create a user with no privileges
create user 'test_user'@'localhost';
create role test_role1;
create role test_role2;
insert into mysql.roles_mapping (HostFk, UserFk, RoleFk) values ('localhost',
'test_user',
'test_role1');
insert into mysql.roles_mapping (HostFk, UserFk, RoleFk) values ('localhost',
'test_user',
'test_role2');
insert into mysql.roles_mapping (HostFk, UserFk, RoleFk) values ('',
'test_role1',
'test_role2');
--sorted_result
select user, host from mysql.user where user not like 'root';
--sorted_result
select * from mysql.roles_mapping;
flush privileges;
--sorted_result
select user, host from mysql.db;
grant select on mysql.* to test_role2;
flush privileges;
--sorted_result
select * from information_schema.applicable_roles;
change_user 'test_user';
--sorted_result
select * from information_schema.applicable_roles;
--sorted_result
show grants;
select current_user(), current_role();
set role test_role1;
--sorted_result
select * from information_schema.enabled_roles;
select current_user(), current_role();
--sorted_result
show grants;
set role none;
--sorted_result
select * from information_schema.enabled_roles;
select current_user(), current_role();
--sorted_result
show grants;
--sorted_result
show grants for test_user@localhost;
--error ER_DBACCESS_DENIED_ERROR
show grants for test_role1;
--error ER_DBACCESS_DENIED_ERROR
show grants for test_role2;
--sorted_result
show grants for CURRENT_USER;
--sorted_result
show grants for CURRENT_USER();
--error ER_NONEXISTING_GRANT
show grants for CURRENT_ROLE;
--error ER_NONEXISTING_GRANT
show grants for CURRENT_ROLE();
set role test_role2;
--sorted_result
select * from information_schema.enabled_roles;
select current_user(), current_role();
--sorted_result
show grants;
--sorted_result
show grants for test_user@localhost;
--sorted_result
show grants for test_role1;
--sorted_result
show grants for test_role2;
--sorted_result
show grants for CURRENT_USER;
--sorted_result
show grants for CURRENT_USER();
--sorted_result
show grants for CURRENT_ROLE;
--sorted_result
show grants for CURRENT_ROLE();
change_user 'root';
drop user 'test_user'@'localhost';
revoke select on mysql.* from test_role2;
drop role test_role1;
drop role test_role2;
delete from mysql.roles_mapping where RoleFk='test_role1';
delete from mysql.roles_mapping where RoleFk='test_role2';
flush privileges;
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