SQL Query Practice Online

Database Design: Zero-Downtime Schema Migrations at Scale! Zero-downtime schema migration on a 300 million row table, done while users read and write to it 24/7. The obvious move is to add the column and update every row in one go. On a live table that locks huge numbers of rows, and suddenly every user request is stuck waiting on you. There's ...

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SQL Query Tutorial

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SQL Tutorial for Beginners (Complete Course using MySQL)

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Learn SQL Beginner to Advanced in Under 4 Hours

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SQL Full Course 2026 | SQL Tutorial For Beginners | SQL Basics To Advanced Full Course | Simplilearn

YouTubeSimplilearn

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Top videos

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Las tablas en SQL Server son la base de cualquier base de datos. En esté tutorial aprenderás cómo crear tablas, declarar columnas primarias y tipos de datos correctamente paso a paso. No olvides seguirnos para poder seguir creando más contenido :) #sqlserver #sql #basesdedatos #programacion #aprendersql

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SQL Query Examples

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SQL Complete Tutorial in One Video | All SQL Queries with Examples | Beginner to Advanced

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Career Switch: Data Analytics to Supply Chain

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Upcoming Job Oriented Training Batches SQL School July 2026

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TikTokjcastagnoli

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SQL vs. NoSQL Databases The choice between SQL and NoSQL impacts how your application stores, scales, and manages data. SQL (Relational Databases) SQL databases use a structured, table-based format with rows and columns. They rely on a predefined schema, meaning you must define the data structure before adding any information. Strengths: Excellent for complex queries, multi-row transactions, and maintaining strict data integrity (ACID compliance). Best Use: Financial systems, accounting software

89.1K views2 months ago

TikTokgreghogg5

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jom belajar excel, powerbi dan SQL bulan July? boleh guna kod JUNE49 untuk combo 2 kelas to get discount dan JUNE100 untuk combo 3 kelas ya. sesuai untuk semua intern, fresh grad, unemployed, yang menganggur kita akan start belajar dari level basic #dataanalysis #microsoftpowerbi #microsoftexcel #sql #freshgrad #kelasonline

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#sql #тетрадьсмерти #ягамилайт #учёба #врек | light yagami laugh

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SQL in 30 Day 22: Mastering CASE Statements

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Cómo recuperar una base de datos borrada en SQL cuando CTRL Z no funciona

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SQL Interview: Track Monthly Active Customers (Senior/Staff DS)

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TikTokcoding.kitty7

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Один % убил мой индекс — поиск завис на 8 секунд 🔥 LIKE '%foo%' — это ловушка: процент в начале выключает индекс. На миллионе строк — 5 мс против 8 сек. #sql #postgres #postgresql #backend #python #django #программирование #разработка #databases #performance #sqlacademy

76.9K views2 months ago

TikToksql.academy

1:16

Дашборд тормозит 5 секунд на каждой загрузке из-за тяжёлой агрегации? В Postgres это чинится одной командой — без Redis. VIEW не спасёт: это просто сохранённый текст запроса, агрегация гоняется заново каждый раз. А MATERIALIZED VIEW хранит готовый результат на диске — любой SELECT отдаёт его за ~50 мс вместо 5 секунд. В 100 раз быстрее. Нюанс: сам не обновляется — нужен REFRESH (обычно по расписанию). Зато, в отличие от Redis, его можно индексировать, фильтровать в SELECT и джойнить как обычную

62.4K views2 months ago

TikToksql.academy

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🔥How to Build a Data Analyst Portfolio That Gets You Hired | Intellipaat

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YouTubeIntellipaat

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Spark Created 2009 Tasks, But I Only requested for 2000 #databricks #dataengineering

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YouTubeSumit Mittal

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