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#
# 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;
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