Data Science. SQL hub | United States America (US)

Create: 2025-05-29 Update: 2025-06-30 13:19:58

⚡️ SQL-шпаргалка, которая выручит в интервью, проекте и проде

Полный мастер-гайд по SQL в одном PDF: практичные примеры, чёткие объяснения и никакой воды.

Что внутри:
• 💬 Создание баз, таблиц и изменение схем
• 💬 Запросы любого уровня сложности: JOIN, GROUP BY, HAVING, PARTITION
• 💬 Подзапросы, CTE, оконные функции: ROW_NUMBER, RANK, DENSE_RANK
• 💬 VIEW, временные таблицы и работа с дубликатами
• 💬 Даты, строки, преобразования и агрегации
• 💬 Очистка данных, разбиение по разделителям
• 💬 UNION, INTERSECT, EXCEPT — управление сложными выборками

Затрагиваются и продвинутые кейсы:
• Парсинг адресов
• Кастомная сортировка
• Использование ISNULL и COALESCE

🧠 Это не просто набор команд — это концентрат боевого SQL-опыта.

Подходит для:
➡️ Подготовки к SQL-интервью
➡️ BI и аналитики
➡️ Web-разработки с базами
➡️ Встраивания SQL в проекты на Python, Go, Java и других языках

Data Science. SQL hub

SQL_cheatsheet.pdf

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⚡️ SQL-шпаргалка

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