SQL задачи

Ответ к Задаче 21

SELECT a.salesman_id, name, ord_no, 'highest on', ord_date FROM salesman a, orders b WHERE a.salesman_id =b.salesman_id AND b.purch_amt= (SELECT MAX (purch_amt) FROM orders c WHERE c.ord_date = b.ord_date) UNION (SELECT a.salesman_id, name, ord_no, 'lowest on', ord_date FROM salesman a, orders b WHERE a.salesman_id =b.salesman_id AND b.purch_amt= (SELECT MIN (purch_amt) FROM orders c WHERE c.ord_date = b.ord_date)) ORDER BY 3

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www.tgoop.com/sqlquestions/927

2.7K viewsMar 23, 2023 at 11:54

Ответ к Задаче 21

SELECT a.salesman_id, name, ord_no, 'highest on', ord_date FROM salesman a, orders b WHERE a.salesman_id =b.salesman_id AND b.purch_amt= (SELECT MAX (purch_amt) FROM orders c WHERE c.ord_date = b.ord_date) UNION (SELECT a.salesman_id, name, ord_no, 'lowest on', ord_date FROM salesman a, orders b WHERE a.salesman_id =b.salesman_id AND b.purch_amt= (SELECT MIN (purch_amt) FROM orders c WHERE c.ord_date = b.ord_date)) ORDER BY 3

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