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SQL для начинающих на примере PostgreSQL @Базы данных | Access, SQL, Big Data

Базы данных | Access, SQL, Big Data | United States America (US)

Create: 2024-05-08 Update: 2024-05-28 14:25:32

SQL для начинающих на примере PostgreSQL

В этом видео автор подробно и наглядно разбирает реляционные базы данных и язык для работы с ними — SQL — на примере популярной СУБД PostgreSQL. Вы изучите работу с базой данных для интернет-магазина, хранящую в себе товары, их фотографии, покупателей и их заказы.

00:00 Зачем знать SQL и базы данных
02:47 Виды баз данных
03:28 Понятие сущностей, проектирование больших систем
06:01 Сущности в реляционных базах данных
06:50 Проектирование схемы БД магазина на бумаге
10:27 Перенос схемы БД в PostgreSQL
17:40 SELECT (получение данных)
19:03 JOIN (объединение таблиц)
23:25 LEFT JOIN, RIGHT JOIN, INNER JOIN
26:57 Удаление, обновление данных
28:23 Пример комплексного запроса с несколькими JOIN
32:31 GROUP BY (группировка данных)
34:11 COALESCE
34:47 ORDER BY (сортировка данных)
35:13 HAVING
36:26 LIMIT, OFFSET
38:09 Итоги

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Базы данных | Access, SQL, Big Data

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SQL для начинающих на примере PostgreSQL

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