9 lines
413 B
MySQL
9 lines
413 B
MySQL
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/*Write a SQL statement to make a cartesian product between salesman and customer i.e. each salesman will appear for all
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customer and vice versa for those salesmen who must belong a city which is not the same as his customer and the customers
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should have an own grade.*/
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SELECT *
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FROM salesman a
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CROSS JOIN customer b
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WHERE a.city IS NOT NULL
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AND b.grade IS NOT NULL
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AND a.city<>b.city;
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