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16 lines
541 B
SQL
16 lines
541 B
SQL
/*9. Write a query that produces the name and number of each salesman and each customer with more than one current order.
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Put the results in alphabetical order.*/
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SELECT customer_id, cust_name
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FROM customer a
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WHERE 1<
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(SELECT COUNT (*)
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FROM orders b
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WHERE a.customer_id = b.customer_id)
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UNION
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SELECT salesman_id, name
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FROM salesman a
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WHERE 1 <
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(SELECT COUNT (*)
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FROM orders b
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WHERE a.salesman_id = b.salesman_id)
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ORDER BY 2; |