CREATE USER has_role@'localhost';
GRANT ALL PRIVILEGES ON *.* TO has_role@'localhost';
CREATE ROLE test_role;
GRANT test_role TO has_role@'localhost';
CREATE USER no_role@'localhost';
GRANT ALL PRIVILEGES ON *.* TO no_role@'localhost';
CREATE TABLE view_role_test (
id int primary key,
role_name varchar(50)
);
INSERT INTO view_role_test VALUES (1, 'test_role');
#
# Use the same logic for stored procedures.
#
PREPARE prepared_no_current_role FROM "SELECT * from view_role_test WHERE role_name = CURRENT_ROLE()";
#
# Creating a view with no CURRENT_ROLE() set and one with CURRENT_ROLE()
# set. Both should produce the same SHOW CREATE VIEW output.
#
CREATE
DEFINER = no_role@localhost
SQL SECURITY INVOKER
VIEW v_view_role_test_no_current_role
AS
SELECT * FROM view_role_test WHERE role_name = CURRENT_ROLE();
SHOW CREATE VIEW v_view_role_test_no_current_role;
View	Create View	character_set_client	collation_connection
v_view_role_test_no_current_role	CREATE ALGORITHM=UNDEFINED DEFINER=`no_role`@`localhost` SQL SECURITY INVOKER VIEW `v_view_role_test_no_current_role` AS select `view_role_test`.`id` AS `id`,`view_role_test`.`role_name` AS `role_name` from `view_role_test` where `view_role_test`.`role_name` = current_role()	latin1	latin1_swedish_ci
#
# No values should be returned
#
EXECUTE prepared_no_current_role;
id	role_name
SELECT * FROM view_role_test WHERE role_name = CURRENT_ROLE();
id	role_name
SELECT * FROM v_view_role_test_no_current_role;
id	role_name
#
# Now let's set the role. Create identical views as before. See if
# their behaviour is different. It should not be.
#
SET ROLE test_role;
SELECT CURRENT_USER();
CURRENT_USER()
root@localhost
SELECT CURRENT_ROLE();
CURRENT_ROLE()
test_role
#
# Create the VIEW and prepared Statement with a CURRENT_ROLE() set.
#
CREATE
DEFINER = no_role@localhost
SQL SECURITY INVOKER
VIEW v_view_role_test_with_current_role
AS
SELECT * FROM view_role_test WHERE role_name = CURRENT_ROLE();
PREPARE prepared_with_current_role FROM "SELECT * from view_role_test WHERE role_name = CURRENT_ROLE()";
SHOW CREATE VIEW v_view_role_test_with_current_role;
View	Create View	character_set_client	collation_connection
v_view_role_test_with_current_role	CREATE ALGORITHM=UNDEFINED DEFINER=`no_role`@`localhost` SQL SECURITY INVOKER VIEW `v_view_role_test_with_current_role` AS select `view_role_test`.`id` AS `id`,`view_role_test`.`role_name` AS `role_name` from `view_role_test` where `view_role_test`.`role_name` = current_role()	latin1	latin1_swedish_ci
#
# Values should be returned for all select statements as we do have
# a CURRENT_ROLE() active;
#
EXECUTE prepared_no_current_role;
id	role_name
1	test_role
EXECUTE prepared_with_current_role;
id	role_name
1	test_role
SELECT * FROM view_role_test WHERE role_name = CURRENT_ROLE();
id	role_name
1	test_role
SELECT * FROM v_view_role_test_no_current_role;
id	role_name
1	test_role
SELECT * FROM v_view_role_test_with_current_role;
id	role_name
1	test_role
SET ROLE NONE;
#
# No values should be returned for all select statements as we do not have
# a CURRENT_ROLE() active;
#
EXECUTE prepared_no_current_role;
id	role_name
EXECUTE prepared_with_current_role;
id	role_name
SELECT * FROM view_role_test WHERE role_name = CURRENT_ROLE();
id	role_name
SELECT * FROM v_view_role_test_no_current_role;
id	role_name
SELECT * FROM v_view_role_test_with_current_role;
id	role_name
DROP USER has_role@'localhost';
DROP USER no_role@'localhost';
DROP ROLE test_role;
DROP table view_role_test;
DROP VIEW v_view_role_test_no_current_role;
DROP VIEW v_view_role_test_with_current_role;
DROP PREPARE prepared_no_current_role;
DROP PREPARE prepared_with_current_role;