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connection node_2;
connection node_1;
CREATE TABLE ten (f1 INTEGER NOT NULL PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO ten VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
CREATE TABLE parent (
id INT PRIMARY KEY AUTO_INCREMENT,
f2 INTEGER
) ENGINE=InnoDB;
CREATE TABLE child (
id INT PRIMARY KEY AUTO_INCREMENT,
parent_id INT
) ENGINE=InnoDB;
INSERT INTO parent VALUES (1, 0);
connection node_2;
INSERT INTO child (parent_id) SELECT 1 FROM ten AS a1, ten AS a2, ten AS a3, ten AS a4;;
connection node_1a;
INSERT INTO parent (f2) SELECT 1 FROM ten AS a1, ten AS a2, ten AS a3, ten AS a4;;
connection node_2a;
INSERT INTO parent (f2) SELECT 2 FROM ten AS a1, ten AS a2, ten AS a3, ten AS a4;;
connection node_1b;
ALTER TABLE child ADD FOREIGN KEY (parent_id) REFERENCES parent(id);;
connection node_1a;
connection node_1b;
connection node_2;
connection node_2a;
DROP TABLE child;
DROP TABLE parent;
DROP TABLE ten;
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