File: galera_fk_cascade_update.test

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#
# Test Foreign Key Cascading UPDATEs
#

--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 UPDATE CASCADE
) ENGINE=InnoDB;

CREATE TABLE child (
    id INT NOT NULL PRIMARY KEY, 
    grandparent_id INT,
    FOREIGN KEY (grandparent_id)
        REFERENCES parent(grandparent_id)
        ON UPDATE 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
UPDATE grandparent SET id = 3 WHERE id = 1;

--connection node_1
SELECT COUNT(*) = 1 FROM parent WHERE grandparent_id = 3;
SELECT COUNT(*) = 1 FROM child WHERE grandparent_id = 3;

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