#
# Test Foreign Key Cascading DELETEs
#

--source include/galera_cluster.inc

--echo #
--echo # test phase with cascading foreign key through 3 tables
--echo #

--connection node_1

CREATE TABLE grandparent (
    id INT NOT NULL PRIMARY KEY
) ENGINE=InnoDB;

CREATE TABLE parent (
    id INT NOT NULL PRIMARY KEY,
    grandparent_id INT,
    FOREIGN KEY (grandparent_id)
        REFERENCES grandparent(id)
        ON DELETE CASCADE
) ENGINE=InnoDB;

CREATE TABLE child (
    id INT NOT NULL PRIMARY KEY, 
    parent_id INT,
    FOREIGN KEY (parent_id) 
        REFERENCES parent(id)
        ON DELETE CASCADE
) ENGINE=InnoDB;

INSERT INTO grandparent VALUES (1),(2);
INSERT INTO parent VALUES (1,1), (2,2);
INSERT INTO child VALUES (1,1), (2,2);

--connection node_2
--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'grandparent'
--source include/wait_condition.inc
--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'parent'
--source include/wait_condition.inc
--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'child'
--source include/wait_condition.inc
--let $wait_condition = SELECT COUNT(*) = 2 FROM child;
--source include/wait_condition.inc
--let $wait_condition = SELECT COUNT(*) = 2 FROM parent;
--source include/wait_condition.inc
--let $wait_condition = SELECT COUNT(*) = 2 FROM grandparent;
--source include/wait_condition.inc
DELETE FROM grandparent WHERE id = 1;

SELECT * FROM grandparent;
SELECT * FROM parent;
SELECT * FROM child;

--connection node_1
--let $wait_condition = SELECT COUNT(*) = 1 FROM child;
--source include/wait_condition.inc
--let $wait_condition = SELECT COUNT(*) = 1 FROM parent;
--source include/wait_condition.inc
--let $wait_condition = SELECT COUNT(*) = 1 FROM grandparent;
--source include/wait_condition.inc

SELECT * FROM grandparent;
SELECT * FROM parent;
SELECT * FROM child;

DROP TABLE child;
DROP TABLE parent;
DROP TABLE grandparent;