#
# MDEV-12666 CURRENT_ROLE() does not work in a view
#
--source include/not_embedded.inc

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');

--echo #
--echo # Use the same logic for stored procedures.
--echo #
PREPARE prepared_no_current_role FROM "SELECT * from view_role_test WHERE role_name = CURRENT_ROLE()";

--echo #
--echo # Creating a view with no CURRENT_ROLE() set and one with CURRENT_ROLE()
--echo # set. Both should produce the same SHOW CREATE VIEW output.
--echo #
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;


--echo #
--echo # No values should be returned
--echo #
EXECUTE prepared_no_current_role;
SELECT * FROM view_role_test WHERE role_name = CURRENT_ROLE();
SELECT * FROM v_view_role_test_no_current_role;

--echo #
--echo # Now let's set the role. Create identical views as before. See if
--echo # their behaviour is different. It should not be.
--echo #
SET ROLE test_role;

SELECT CURRENT_USER();
SELECT CURRENT_ROLE();

--echo #
--echo # Create the VIEW and prepared Statement with a CURRENT_ROLE() set.
--echo #
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;


--echo #
--echo # Values should be returned for all select statements as we do have
--echo # a CURRENT_ROLE() active;
--echo #
EXECUTE prepared_no_current_role;
EXECUTE prepared_with_current_role;
SELECT * FROM view_role_test WHERE role_name = CURRENT_ROLE();
SELECT * FROM v_view_role_test_no_current_role;
SELECT * FROM v_view_role_test_with_current_role;

SET ROLE NONE;
--echo #
--echo # No values should be returned for all select statements as we do not have
--echo # a CURRENT_ROLE() active;
--echo #
EXECUTE prepared_no_current_role;
EXECUTE prepared_with_current_role;
SELECT * FROM view_role_test WHERE role_name = CURRENT_ROLE();
SELECT * FROM v_view_role_test_no_current_role;
SELECT * FROM v_view_role_test_with_current_role;


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;