elena belykh
44 lines
775 B
SQL
44 lines
775 B
SQL
--Задача 1757
|
|
SELECT product_id
|
|
FROM Products
|
|
WHERE low_fats = 'Y' AND recyclable = 'Y';
|
|
|
|
--Задача 584
|
|
SELECT name
|
|
FROM Customer
|
|
WHERE referee_id!= 2 OR referee_id IS NULL;
|
|
|
|
--Задача 595
|
|
SELECT name, population, area
|
|
FROM World
|
|
WHERE area >= 3000000
|
|
OR population >= 25000000;
|
|
|
|
--Задача 1148
|
|
SELECT DISTINCT author_id AS id
|
|
FROM Views
|
|
WHERE author_id = viewer_id
|
|
ORDER BY id;
|
|
|
|
--Задача 1683
|
|
SELECT tweet_id
|
|
FROM Tweets
|
|
WHERE CHAR_LENGTH(content) > 15;
|
|
|
|
--Задача 620
|
|
SELECT id, movie, description, rating
|
|
FROM Cinema
|
|
WHERE id % 2 = 1
|
|
AND description != 'boring'
|
|
ORDER BY rating DESC;
|
|
|
|
--Задача 1667
|
|
SELECT
|
|
user_id,
|
|
CONCAT(
|
|
UPPER(SUBSTR(name, 1, 1)),
|
|
LOWER(SUBSTR(name, 2))
|
|
) AS name
|
|
FROM Users
|
|
ORDER BY user_id;
|