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42 lines
1.3 KiB
Text
42 lines
1.3 KiB
Text
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CREATE TABLE product (category INT NOT NULL, id INT NOT NULL,
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price DECIMAL, PRIMARY KEY(category, id)) ENGINE=INNODB;
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CREATE TABLE customer (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB;
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CREATE TABLE product_order (no INT NOT NULL AUTO_INCREMENT,
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product_category INT NOT NULL,
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product_id INT NOT NULL,
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customer_id INT NOT NULL,
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PRIMARY KEY(no),
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INDEX (product_category, product_id),
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FOREIGN KEY (product_category, product_id)
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REFERENCES product(category, id) ON UPDATE CASCADE ON DELETE RESTRICT,
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INDEX (customer_id),
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FOREIGN KEY (customer_id)
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REFERENCES customer(id)
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) ENGINE=INNODB;
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SELECT * FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS;
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CONSTRAINT_CATALOG def
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CONSTRAINT_SCHEMA test
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CONSTRAINT_NAME product_order_ibfk_1
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UNIQUE_CONSTRAINT_CATALOG def
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UNIQUE_CONSTRAINT_SCHEMA test
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UNIQUE_CONSTRAINT_NAME PRIMARY
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MATCH_OPTION NONE
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UPDATE_RULE CASCADE
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DELETE_RULE RESTRICT
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TABLE_NAME product_order
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REFERENCED_TABLE_NAME pro
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CONSTRAINT_CATALOG def
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CONSTRAINT_SCHEMA test
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CONSTRAINT_NAME product_order_ibfk_2
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UNIQUE_CONSTRAINT_CATALOG def
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UNIQUE_CONSTRAINT_SCHEMA test
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UNIQUE_CONSTRAINT_NAME PRIMARY
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MATCH_OPTION NONE
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UPDATE_RULE RESTRICT
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DELETE_RULE RESTRICT
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TABLE_NAME product_order
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REFERENCED_TABLE_NAME cus
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DROP TABLE product_order;
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DROP TABLE product;
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DROP TABLE customer;
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