12 lines
421 B
MySQL
12 lines
421 B
MySQL
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/*7. Write a query to that appends strings to the selected fields, indicating whether or not a specified salesman was matched
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to a customer in his city.*/
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SELECT a.salesman_id, name, a.city, 'MATCHED'
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FROM salesman a, customer b
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WHERE a.city = b.city
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UNION
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SELECT salesman_id, name, city, 'NO MATCH'
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FROM salesman
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WHERE NOT city = ANY
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(SELECT city
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FROM customer)
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ORDER BY 2 DESC;
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