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master
module_19_db4/materials/group_by.sql
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01 ноя 2025, 12:51
01 ноя 2025, 12:51
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SELECT sum(purchase_amount), manager_id FROM orders GROUP BY manager_id; SELECT sum(purchase_amount), full_name FROM orders LEFT OUTER JOIN manager m ON m.manager_id = orders.manager_id GROUP BY orders.manager_id; SELECT sum(purchase_amount), full_name FROM orders LEFT OUTER JOIN manager m ON m.manager_id = orders.manager_id GROUP BY orders.manager_id; SELECT avg(purchase_amount), full_name FROM orders LEFT OUTER JOIN manager m ON m.manager_id = orders.manager_id GROUP BY orders.manager_id; SELECT purchase_amount, manager_id FROM orders GROUP BY manager_id, purchase_amount SELECT city, avg(purchase_amount) avg_purchase FROM customer INNER JOIN orders o ON customer.customer_id = o.customer_id GROUP BY city ORDER BY avg_purchase DESC; SELECT full_name, count(purchase_amount) AS cnt_purchases FROM orders INNER JOIN manager m ON m.manager_id = orders.manager_id GROUP BY full_name HAVING cnt_purchases > 500; SELECT full_name, count(purchase_amount) AS cnt_purchases FROM orders INNER JOIN manager m ON m.manager_id = orders.manager_id GROUP BY full_name HAVING full_name like 'Пет%'; SELECT full_name, count(purchase_amount) AS cnt_purchases FROM orders INNER JOIN manager m ON m.manager_id = orders.manager_id WHERE full_name like 'Пет%' GROUP BY full_name