https://github.com/bepb/stepik_sql

https://github.com/bepb/stepik_sql

Last synced: 5 months ago
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• Host: GitHub
• URL: https://github.com/bepb/stepik_sql
• Owner: BEPb
• License: mit
• Created: 2022-12-06T18:08:55.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2023-01-01T17:19:54.000Z (over 3 years ago)
• Last Synced: 2025-02-17T10:48:58.960Z (over 1 year ago)
• Size: 12.2 MB
• Stars: 15
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          




# Интерактивный тренажер по SQL



## Как это работает?

Все очень просто: переходи по [ссылке](https://stepik.org/course/63054/syllabus) курса и учись, а если уже все идеи при решении практических задач закончились, обращайся к моим подсказкам.

## Порядок подготовки и работы с ботом

1. Клонировать репозиторий либо скачать архив из github или при помощи следующих команд в командной строке

   ```commandline

   $ cmd

   $ git clone https://github.com/BEPb/stepik_python

   $ cd stepik_sql

   ```

2. Приступить к обучению, по следующей программе:

## Содержание

  

* **1. Основы реляционной модели SQL**

#### В данном модуле рассматриваются основные понятия реляционной модели, а также различные виды SQL запросов к одной таблице базы данных  

 1.1   Отношение (таблица):

   - 1.1.1. [теоретический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.1%20%D0%9E%D1%82%D0%BD%D0%BE%D1%88%D0%B5%D0%BD%D0%B8%D0%B5%20(%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0)/1.1.1.%20%D1%82%D0%B5%D0%BE%D1%80%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.1.2. [теоретический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.1%20%D0%9E%D1%82%D0%BD%D0%BE%D1%88%D0%B5%D0%BD%D0%B8%D0%B5%20(%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0)/1.1.2.%20%D1%82%D0%B5%D0%BE%D1%80%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.1.3. [теоретический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.1%20%D0%9E%D1%82%D0%BD%D0%BE%D1%88%D0%B5%D0%BD%D0%B8%D0%B5%20(%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0)/1.1.3.%20%D1%82%D0%B5%D0%BE%D1%80%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.1.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.1%20%D0%9E%D1%82%D0%BD%D0%BE%D1%88%D0%B5%D0%BD%D0%B8%D0%B5%20(%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0)/1.1.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.1.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.1%20%D0%9E%D1%82%D0%BD%D0%BE%D1%88%D0%B5%D0%BD%D0%B8%D0%B5%20(%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0)/1.1.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.1.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.1%20%D0%9E%D1%82%D0%BD%D0%BE%D1%88%D0%B5%D0%BD%D0%B8%D0%B5%20(%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0)/1.1.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

 1.2   Выборка данных  

   - 1.2.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.9. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.9.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.10. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.10.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.11. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.11.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.2.12. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.2%20%D0%92%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.2.12.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

 1.3   Запросы, групповые операции

   - 1.3.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%2C%20%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D0%BE%D0%B2%D1%8B%D0%B5%20%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8/1.3.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.3.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%2C%20%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D0%BE%D0%B2%D1%8B%D0%B5%20%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8/1.3.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.3.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%2C%20%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D0%BE%D0%B2%D1%8B%D0%B5%20%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8/1.3.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.3.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%2C%20%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D0%BE%D0%B2%D1%8B%D0%B5%20%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8/1.3.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.3.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%2C%20%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D0%BE%D0%B2%D1%8B%D0%B5%20%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8/1.3.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.3.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%2C%20%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D0%BE%D0%B2%D1%8B%D0%B5%20%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8/1.3.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.3.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%2C%20%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D0%BE%D0%B2%D1%8B%D0%B5%20%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8/1.3.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.3.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%2C%20%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D0%BE%D0%B2%D1%8B%D0%B5%20%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8/1.3.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

 1.4   Вложенные запросы  

   - 1.4.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.4%20%D0%92%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%BD%D1%8B%D0%B5%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/1.4.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.4.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.4%20%D0%92%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%BD%D1%8B%D0%B5%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/1.4.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.4.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.4%20%D0%92%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%BD%D1%8B%D0%B5%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/1.4.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.4.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.4%20%D0%92%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%BD%D1%8B%D0%B5%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/1.4.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.4.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.4%20%D0%92%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%BD%D1%8B%D0%B5%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/1.4.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.4.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.4%20%D0%92%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%BD%D1%8B%D0%B5%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/1.4.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

 1.5   Запросы корректировки данных  

   - 1.5.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.5%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.5.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.5.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.5%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.5.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.5.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.5%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.5.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.5.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.5%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.5.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.5.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.5%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.5.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.5.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.5%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.5.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.5.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.5%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.5.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.5.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.5%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.5.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.5.9. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.5%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.5.9.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.5.10. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.5%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85/1.5.10.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

  

 1.6   Таблица "Командировки" - запросы на выборку  

   - 1.6.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.6%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9A%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/1.6.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.6.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.6%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9A%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/1.6.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.6.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.6%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9A%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/1.6.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.6.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.6%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9A%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/1.6.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.6.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.6%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9A%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/1.6.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.6.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.6%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9A%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/1.6.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.6.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.6%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9A%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/1.6.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.6.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.6%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9A%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/1.6.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.6.9. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.6%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9A%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/1.6.9.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.6.10. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.6%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9A%D0%BE%D0%BC%D0%B0%D0%BD%D0%B4%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/1.6.10.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

  

 1.7   Таблица "Нарушители ПДД" - запросы корректировки

   - 1.7.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.7%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9D%D0%B0%D1%80%D1%83%D1%88%D0%B5%D0%BD%D0%B8%D1%8F%20%D0%9F%D0%94%D0%94%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/1.7.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.7.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.7%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9D%D0%B0%D1%80%D1%83%D1%88%D0%B5%D0%BD%D0%B8%D1%8F%20%D0%9F%D0%94%D0%94%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/1.7.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.7.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.7%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9D%D0%B0%D1%80%D1%83%D1%88%D0%B5%D0%BD%D0%B8%D1%8F%20%D0%9F%D0%94%D0%94%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/1.7.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.7.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.7%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9D%D0%B0%D1%80%D1%83%D1%88%D0%B5%D0%BD%D0%B8%D1%8F%20%D0%9F%D0%94%D0%94%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/1.7.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.7.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.7%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9D%D0%B0%D1%80%D1%83%D1%88%D0%B5%D0%BD%D0%B8%D1%8F%20%D0%9F%D0%94%D0%94%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/1.7.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.7.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.7%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9D%D0%B0%D1%80%D1%83%D1%88%D0%B5%D0%BD%D0%B8%D1%8F%20%D0%9F%D0%94%D0%94%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/1.7.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.7.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.7%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9D%D0%B0%D1%80%D1%83%D1%88%D0%B5%D0%BD%D0%B8%D1%8F%20%D0%9F%D0%94%D0%94%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/1.7.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 1.7.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.7%20%D0%A2%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%20%D0%9D%D0%B0%D1%80%D1%83%D1%88%D0%B5%D0%BD%D0%B8%D1%8F%20%D0%9F%D0%94%D0%94%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/1.7.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

 1.8 Глоссарий и поиск по курсу

   - 1.8.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/1.%20%D0%9E%D1%81%D0%BD%D0%BE%D0%B2%D1%8B%20%D1%80%D0%B5%D0%BB%D1%8F%D1%86%D0%B8%D0%BE%D0%BD%D0%BD%D0%BE%D0%B9%20%D0%BC%D0%BE%D0%B4%D0%B5%D0%BB%D0%B8%20%D0%B8%20SQL/1.8%20%D0%93%D0%BB%D0%BE%D1%81%D1%81%D0%B0%D1%80%D0%B8%D0%B9%20%D0%B8%20%D0%BF%D0%BE%D0%B8%D1%81%D0%BA%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/1.8.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

---

* **2. Запросы SQL к связанным таблицам**

#### В модуле рассматриваются связи между таблицами реляционной базы данных, а также различные виды запросов, построенных на связанных таблицах  

 2.1   Связи между таблицами

   - 2.1.1. [теоретический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.1%20%D0%A1%D0%B2%D1%8F%D0%B7%D0%B8%20%D0%BC%D0%B5%D0%B6%D0%B4%D1%83%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC%D0%B8/2.1.1.%20%D1%82%D0%B5%D0%BE%D1%80%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.1.2. [теоретический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.1%20%D0%A1%D0%B2%D1%8F%D0%B7%D0%B8%20%D0%BC%D0%B5%D0%B6%D0%B4%D1%83%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC%D0%B8/2.1.2.%20%D1%82%D0%B5%D0%BE%D1%80%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.1.3. [теоретический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.1%20%D0%A1%D0%B2%D1%8F%D0%B7%D0%B8%20%D0%BC%D0%B5%D0%B6%D0%B4%D1%83%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC%D0%B8/2.1.3.%20%D1%82%D0%B5%D0%BE%D1%80%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.1.4. [теоретический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.1%20%D0%A1%D0%B2%D1%8F%D0%B7%D0%B8%20%D0%BC%D0%B5%D0%B6%D0%B4%D1%83%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC%D0%B8/2.1.4.%20%D1%82%D0%B5%D0%BE%D1%80%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.1.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.1%20%D0%A1%D0%B2%D1%8F%D0%B7%D0%B8%20%D0%BC%D0%B5%D0%B6%D0%B4%D1%83%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC%D0%B8/2.1.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.1.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.1%20%D0%A1%D0%B2%D1%8F%D0%B7%D0%B8%20%D0%BC%D0%B5%D0%B6%D0%B4%D1%83%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC%D0%B8/2.1.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.1.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.1%20%D0%A1%D0%B2%D1%8F%D0%B7%D0%B8%20%D0%BC%D0%B5%D0%B6%D0%B4%D1%83%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC%D0%B8/2.1.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.1.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.1%20%D0%A1%D0%B2%D1%8F%D0%B7%D0%B8%20%D0%BC%D0%B5%D0%B6%D0%B4%D1%83%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC%D0%B8/2.1.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.1.9. [теоретический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.1%20%D0%A1%D0%B2%D1%8F%D0%B7%D0%B8%20%D0%BC%D0%B5%D0%B6%D0%B4%D1%83%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC%D0%B8/2.1.9.%20%D1%82%D0%B5%D0%BE%D1%80%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.1.10. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.1%20%D0%A1%D0%B2%D1%8F%D0%B7%D0%B8%20%D0%BC%D0%B5%D0%B6%D0%B4%D1%83%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC%D0%B8/2.1.10.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

    2.2   Запросы на выборку, соединение таблиц 

   - 2.2.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.2%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.2.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.2.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.2%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.2.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.2.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.2%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.2.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.2.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.2%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.2.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.2.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.2%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.2.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.2.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.2%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.2.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.2.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.2%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.2.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.2.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.2%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.2.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.2.9. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.2%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.2.9.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

 

    2.3   Запросы корректировки, соединение таблиц  

   - 2.3.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.3.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.3.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.3.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.3.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.3.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.3.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.3.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.3.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.3.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.3.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.3.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.3.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.3.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.3.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.3%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8%2C%20%D1%81%D0%BE%D0%B5%D0%B4%D0%B8%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86/2.3.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

 

    2.4   База данных «Интернет-магазин книг», запросы на выборку

   - 2.4.1. [теоретический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.1.%20%D1%82%D0%B5%D0%BE%D1%80%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.2. [теоретический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.2.%20%D1%82%D0%B5%D0%BE%D1%80%D0%B5%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.9. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.9.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.10. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.10.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.11. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.11.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.12. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.12.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.13. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.13.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.4.14. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/2.4.14.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

    2.5   База данных «Интернет-магазин книг», запросы корректировки

   - 2.5.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/2.5.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.5.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/2.5.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.5.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/2.5.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.5.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/2.5.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.5.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/2.5.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.5.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/2.5.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.5.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/2.5.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.5.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/2.5.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.5.9. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/2.5.9.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 2.5.10. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/2.%20%D0%97%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20SQL%20%D0%BA%20%D1%81%D0%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%BD%D1%8B%D0%BC%20%D1%82%D0%B0%D0%B1%D0%BB%D0%B8%D1%86%D0%B0%D0%BC/2.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%98%D0%BD%D1%82%D0%B5%D1%80%D0%BD%D0%B5%D1%82-%D0%BC%D0%B0%D0%B3%D0%B0%D0%B7%D0%B8%D0%BD%20%D0%BA%D0%BD%D0%B8%D0%B3%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/2.5.10.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

---

* **3. Базы данных и SQL запросы**

#### В модуле рассматривается несколько предметных областей, для каждой строится логическая модель базы данных. К каждой предметной области формулируются задания, которые можно выполнить запросами SQL

    3.1   База данных «Тестирование», запросы на выборку  

   - 3.1.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.1%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.1.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.1.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.1%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.1.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.1.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.1%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.1.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.1.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.1%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.1.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.1.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.1%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.1.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.1.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.1%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.1.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.1.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.1%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.1.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.1.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.1%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.1.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.1.9. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.1%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.1.9.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.1.10. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.1%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.1.10.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

    3.2   База данных «Тестирование», запросы корректировки 

   - 3.2.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.2%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.2.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.2.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.2%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.2.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.2.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.2%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.2.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.2.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.2%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.2.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.2.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.2%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%A2%D0%B5%D1%81%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.2.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

 

    3.3   База данных «Абитуриент», запросы на выборку  

   - 3.3.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.3.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.3.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.3.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.3.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.3.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.3.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.3.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.3.9. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.9.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.3.10. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.10.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.3.11. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.3%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BD%D0%B0%20%D0%B2%D1%8B%D0%B1%D0%BE%D1%80%D0%BA%D1%83/3.3.11.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

    3.4   База данных «Абитуриент», запросы корректировки 

   - 3.4.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.4.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.4.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.4.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.4.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.4.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.4.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.4.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.4.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.4.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.4.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.4.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.4.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.4.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.4.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.4%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%C2%AB%D0%90%D0%B1%D0%B8%D1%82%D1%83%D1%80%D0%B8%D0%B5%D0%BD%D1%82%C2%BB%2C%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B%20%D0%BA%D0%BE%D1%80%D1%80%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%BA%D0%B8/3.4.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

    3.5   База данных "Учебная аналитика по курсу"

   - 3.5.1. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.1.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.2. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.2.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.3. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.3.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.4. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.4.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.5. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.5.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.6. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.6.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.7. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.7.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.8. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.8.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.9. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.9.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.10. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.10.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.11. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.11.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

   - 3.5.12. [практический вопрос](https://github.com/BEPb/stepik_sql/blob/master/3.%20%D0%91%D0%B0%D0%B7%D1%8B%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%B8%20SQL%20%D0%B7%D0%B0%D0%BF%D1%80%D0%BE%D1%81%D1%8B/3.5%20%D0%91%D0%B0%D0%B7%D0%B0%20%D0%B4%D0%B0%D0%BD%D0%BD%D1%8B%D1%85%20%D0%A3%D1%87%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%20%D0%B0%D0%BD%D0%B0%D0%BB%D0%B8%D1%82%D0%B8%D0%BA%D0%B0%20%D0%BF%D0%BE%20%D0%BA%D1%83%D1%80%D1%81%D1%83/3.5.12.%20%D0%BF%D1%80%D0%B0%D0%BA%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D0%B2%D0%BE%D0%BF%D1%80%D0%BE%D1%81.md)

  

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Цель этого репозитория, помочь начинающему программисту получить знания, ну и как награду сертификат