mariadb/mysql-test/suite/galera/t/galera_fk_cascade_delete.test

#
# Test Foreign Key Cascading DELETEs
#

--source include/galera_cluster.inc
--source include/have_innodb.inc

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
DELETE FROM grandparent WHERE id = 1;

--connection node_1
SELECT COUNT(*) = 0 FROM parent WHERE grandparent_id = 1;
SELECT COUNT(*) = 0 FROM child WHERE parent_id = 1;

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