
база-данных
Authored by Kanat Arstanbekov
Mathematics
University
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7 questions
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1.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
SELECT *
FROM orders
…... EXTRACT(YEAR FROM order_date) = …...
…... EXTRACT(MONTH FROM order_date) = 1;
Допишите SQL-запрос, который выберет все заказы, сделанные в январе 2025 года.
2.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
SELECT *
FROM employees
…... department = 'HR'
…... salary > …...;
Допишите SQL-запрос, выбрать всех сотрудников из отдела "HR" с зарплатой больше 50 000.
3.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
SELECT *
FROM products
…... category IN ('Электроника', 'Бытовая техника')
…... price >= …...;
Допишите SQL-запрос, который выберет все продукты из категории "Электроника" или "Бытовая техника", но исключит товары дешевле 500 с.
4.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
SELECT product_id,
…... (*) AS total_sales,
…... (amount) …... avg_sale
FROM sales
GROUP BY product_id;
Допишите SQL-запрос, который посчитает общее количество продаж и среднюю сумму продажи для каждого продукта.
5.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
SELECT *
FROM …..
….. score > …..
ORDER BY score DESC;
Допишите SQL-запрос, который выберет всех студентов с баллом выше 80, отсортировав их по убыванию балла.
6.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
SELECT *
FROM customers
…... city IN ('Бишкек', ' Ош ', '…...');
Допишите SQL-запрос, который выберет всех клиентов из городов "Бишкек", "Ош" или "Чолпон-Ата".
7.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
SELECT customer_id,
...... (amount) AS total_amount
FROM transactions
GROUP BY customer_id
...... total_amount DESC;
Допишите SQL-запрос, который посчитает сумму всех транзакций для каждого клиента, отсортировав их по убыванию суммы.
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