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What is the join where all possible row combinations are produced?

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What is the join where all possible row combinations are produced?

(a) INNER JOIN

(b) OUTER

(c) NATURAL

(d) CARTESIAN

I got this question in semester exam.

Question is taken from Controlling How the Server Listens for Connections topic in division General MySQL Administration of MySQL

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Correct choice is (d) CARTESIAN

Explanation: In ‘cartesian product’, each row of each table is combined with each row in every other table to produce all possible combinations. This produces a very large number of rows since the number is the product of rows.

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