Which of the following queries contains an equality join? a. SELECT title, authorid FROM books, bookauthor WHERE
Question:
Which of the following queries contains an equality join?
a. SELECT title, authorid
FROM books, bookauthor
WHERE books.isbn = bookauthor.isbn
AND retail > 20;
b. SELECT title, name
FROM books CROSS JOIN publisher;
c. SELECT title, gift
FROM books, promotion
WHERE retail >= minretail
AND retail <= maxretail;
d. None of the above
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