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SELECT DISTINCT price
FROM Sells;
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(SELECT drinker FROM Frequents)
EXCEPT ALL
(SELECT drinker FROM Likes);V
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Likes NATURAL JOIN Serves;V
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Drinkers JOIN Frequents ON
name = drinker;
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SELECT beer, AVG(price)
FROM Sells
GROUP BY beer;
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INSERT INTO Likes
VALUES(’Sally’, ’Bud’);
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INSERT INTO Likes(beer, drinker)
VALUES(’Bud’, ’Sally’);
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DELETE FROM Likes;
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UPDATE Sells
SET price = 4.00
WHERE price > 4.00;