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20 lines
532 B
SQL
20 lines
532 B
SQL
DROP DATABASE IF EXISTS on_del_cas;
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CREATE DATABASE on_del_cas;
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USE on_del_cas;
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CREATE TABLE parent (
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id INT NOT NULL AUTO_INCREMENT PRIMARY KEY
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) ENGINE=InnoDB;
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CREATE TABLE child1 (
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id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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parent_id INT NOT NULL,
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FOREIGN KEY fk1 (parent_id) REFERENCES parent (id) ON DELETE RESTRICT
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) ENGINE=InnoDB;
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CREATE TABLE child2 (
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id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
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parent_id INT NOT NULL,
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FOREIGN KEY fk1 (parent_id) REFERENCES parent (id) ON DELETE CASCADE
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) ENGINE=InnoDB;
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