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source include/not_embedded.inc;
#create a user with no privileges
create user test_user@localhost;
create role test_role1;
grant test_role1 to test_user@localhost;
--sorted_result
select user, host from mysql.user where user not like 'root';
--sorted_result
select * from mysql.roles_mapping;
grant select on *.* to test_role1;
--sorted_result
select * from mysql.user where user='test_role1';
change_user 'test_user';
--error ER_TABLEACCESS_DENIED_ERROR
select * from mysql.roles_mapping;
--sorted_result
show grants;
select current_user(), current_role();
set role test_role1;
select current_user(), current_role();
--sorted_result
show grants;
--sorted_result
select * from mysql.roles_mapping;
set role none;
select current_user(), current_role();
--error ER_TABLEACCESS_DENIED_ERROR
select * from mysql.roles_mapping;
change_user 'root';
delete from mysql.user where user='test_role1';
delete from mysql.roles_mapping where Role='test_role1';
flush privileges;
drop user 'test_user'@'localhost';
#
# MDEV-9898 SET ROLE NONE can crash mysqld.
#
create user user1;
--connect (con1,localhost,user1,,)
select current_user;
show grants;
set role none;
connection default;
drop user user1;
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