12 lines
260 B
SQL
12 lines
260 B
SQL
CREATE TABLE planets (
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id integer NOT NULL PRIMARY KEY,
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name varchar(40) NOT NULL UNIQUE
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);
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CREATE TABLE planet_planes (
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planet_id integer NOT NULL REFERENCES planets(id),
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plane_id integer NOT NULL REFERENCES planes(id),
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UNIQUE (planet_id, plane_id)
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);
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