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add: 2.4 init
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‎2. SQL queries to related tables/2.4 Online store database (select queries)/init.sql‎

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/*Создаем схему*/
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DROP SCHEMA IF EXISTS stepik CASCADE;
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CREATE SCHEMA IF NOT EXISTS stepik;
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---AUTHOR
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DROP TABLE IF EXISTS stepik.author CASCADE;
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CREATE TABLE IF NOT EXISTS stepik.author (
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author_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
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name_author TEXT
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);
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INSERT INTO stepik.author(name_author)
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VALUES ('Булгаков М.А.'),
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('Достоевский Ф.М.'),
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('Есенин С.А.'),
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('Пастернак Б.Л.'),
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('Лермонтов М.Ю.');
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---GENRE
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DROP TABLE IF EXISTS stepik.genre CASCADE;
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CREATE TABLE IF NOT EXISTS stepik.genre (
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genre_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
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name_genre TEXT
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);
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INSERT INTO stepik.genre(name_genre)
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VALUES ('Роман'),
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('Поэзия'),
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('Приключения');
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---BOOK
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DROP TABLE IF EXISTS stepik.book CASCADE;
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CREATE TABLE IF NOT EXISTS stepik.book (
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book_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
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title TEXT,
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author_id BIGINT NOT NULL,
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genre_id BIGINT,
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price DECIMAL(8, 2),
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amount INT,
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CONSTRAINT "FK_book_author"
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FOREIGN KEY (author_id) REFERENCES stepik.author (author_id) ON DELETE CASCADE,
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CONSTRAINT "FK_book_genre"
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FOREIGN KEY (genre_id) REFERENCES stepik.genre (genre_id) ON DELETE SET NULL
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);
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INSERT INTO stepik.book(title, author_id, genre_id, price, amount)
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VALUES ('Мастер и Маргарита', 1, 1, 670.99, 3),
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('Белая гвардия', 1, 1, 540.50, 5),
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('Идиот', 2, 1, 460.00, 10),
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('Братья Карамазовы', 2, 1, 799.01, 2),
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('Игрок', 2, 1, 480.50, 10),
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('Стихотворения и поэмы', 3, 2, 650.00, 15),
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('Черный человек', 3, 2, 570.20, 6),
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('Лирика', 4, 2, 518.99, 2);
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---CITY
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DROP TABLE IF EXISTS stepik.city CASCADE;
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CREATE TABLE IF NOT EXISTS stepik.city (
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city_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
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name_city TEXT,
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days_delivery INT
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);
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INSERT INTO stepik.city(name_city, days_delivery)
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VALUES ('Москва', 5),
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('Санкт-Петербург', 3),
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('Владивосток', 12);
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---CLIENT
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CREATE EXTENSION IF NOT EXISTS citext;
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DROP DOMAIN IF EXISTS email;
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CREATE DOMAIN email AS citext
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CHECK ( value ~
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'^[a-zA-Z0-9.!#$%&''*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$' );
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DROP TABLE IF EXISTS stepik.client CASCADE;
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CREATE TABLE IF NOT EXISTS stepik.client
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(
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client_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
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name_client TEXT,
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city_id BIGINT,
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email email,
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CONSTRAINT "FK_client_city"
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FOREIGN KEY (city_id) REFERENCES stepik.city (city_id)
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);
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INSERT INTO stepik.client(name_client, city_id, email)
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VALUES ('Баранов Павел', 3, 'baranov@test'),
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('Абрамова Катя', 1, 'abramova@test'),
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('Семенонов Иван', 2, 'semenov@test'),
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('Яковлева Галина', 1, 'yakovleva@test');
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---BUY
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DROP TABLE IF EXISTS stepik.buy CASCADE;
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CREATE TABLE IF NOT EXISTS stepik.buy
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(
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buy_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
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buy_description TEXT,
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client_id BIGINT DEFAULT (NULL),
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CONSTRAINT "FK_buy_client"
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FOREIGN KEY (client_id) REFERENCES stepik.client (client_id)
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);
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INSERT INTO stepik.buy (buy_description, client_id)
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VALUES ('Доставка только вечером', 1),
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(NULL, 3),
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('Упаковать каждую книгу по отдельности', 2),
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(NULL, 1);
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---BUY_BOOK
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DROP TABLE IF EXISTS stepik.buy_book CASCADE;
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CREATE TABLE IF NOT EXISTS stepik.buy_book (
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buy_book_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
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buy_id BIGINT,
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book_id BIGINT,
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amount INT,
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CONSTRAINT "FK_buy_book_buy"
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FOREIGN KEY (buy_id) REFERENCES stepik.buy (buy_id),
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CONSTRAINT "FK_buy_book_book"
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FOREIGN KEY (book_id) REFERENCES stepik.book (book_id)
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);
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INSERT INTO stepik.buy_book(buy_id, book_id, amount)
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VALUES (1, 1, 1),
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(1, 7, 2),
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(2, 8, 2),
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(3, 3, 2),
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(3, 2, 1),
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(3, 1, 1),
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(4, 5, 1);
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---STEP
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DROP TABLE IF EXISTS stepik.step CASCADE;
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CREATE TABLE IF NOT EXISTS stepik.step (
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step_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
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name_step TEXT
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);
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INSERT INTO stepik.step(name_step)
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VALUES ('Оплата'),
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('Упаковка'),
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('Транспортировка'),
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('Доставка');
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---BUY_STEP
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DROP TABLE IF EXISTS stepik.buy_step CASCADE;
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CREATE TABLE IF NOT EXISTS stepik.buy_step (
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buy_step_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
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buy_id INT,
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step_id INT,
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date_step_beg DATE,
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date_step_end DATE,
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CONSTRAINT "FK_buy_step_buy"
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FOREIGN KEY (buy_id) REFERENCES stepik.buy (buy_id),
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CONSTRAINT "FK_buy_step_step"
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FOREIGN KEY (step_id) REFERENCES stepik.step (step_id)
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);
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INSERT INTO stepik.buy_step(buy_id, step_id, date_step_beg, date_step_end)
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VALUES (1, 1, '2020-02-20', '2020-02-20'),
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(1, 2, '2020-02-20', '2020-02-21'),
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(1, 3, '2020-02-22', '2020-03-07'),
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(1, 4, '2020-03-08', '2020-03-08'),
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(2, 1, '2020-02-28', '2020-02-28'),
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(2, 2, '2020-02-29', '2020-03-01'),
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(2, 3, '2020-03-02', NULL),
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(2, 4, NULL, NULL),
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(3, 1, '2020-03-05', '2020-03-05'),
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(3, 2, '2020-03-05', '2020-03-06'),
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(3, 3, '2020-03-06', '2020-03-10'),
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(3, 4, '2020-03-11', NULL),
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(4, 1, '2020-03-20', NULL),
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(4, 2, NULL, NULL),
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(4, 3, NULL, NULL),
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(4, 4, NULL, NULL);
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---BUY_ARCHIVE
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DROP TABLE IF EXISTS stepik.buy_archive CASCADE;
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CREATE TABLE IF NOT EXISTS stepik.buy_archive (
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buy_archive_id BIGINT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
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buy_id INT,
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client_id INT,
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book_id INT,
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date_payment DATE,
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price DECIMAL,
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amount INT,
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CONSTRAINT "FK_buy_archive_client"
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FOREIGN KEY (client_id) REFERENCES stepik.client (client_id),
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CONSTRAINT "FK_buy_archive_book"
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FOREIGN KEY (book_id) REFERENCES stepik.book (book_id)
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);
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INSERT INTO stepik.buy_archive(buy_id, client_id, book_id, date_payment, price, amount)
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VALUES (2, 1, 1, '2019-02-21', 670.60, 2),
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(2, 1, 3, '2019-02-21', 450.90, 1),
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(1, 2, 2, '2019-02-10', 520.30, 2),
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(1, 2, 4, '2019-02-10', 780.90, 3),
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(1, 2, 3, '2019-02-10', 450.90, 1),
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(3, 4, 4, '2019-03-05', 780.90, 4),
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(3, 4, 5, '2019-03-05', 480.90, 2),
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(4, 1, 6, '2019-03-12', 650.00, 1),
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(5, 2, 1, '2020-03-18', 670.60, 2),
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(5, 2, 4, '2020-03-18', 780.90, 1);

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