​What is SQL? Database Basics for Beginners | Bolev Tech
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​What is SQL? Database Basics for Beginners | Bolev Tech
What is SQL? If you’ve ever wondered how modern apps like Netflix, Spotify, or Instagram store and retrieve massive amounts of data, the answer is SQL (Structured Query Language)! Welcome back to Bolev Tech. In this quick, beginner-friendly video, we break down exactly what SQL is, how relational databases work, and the 4 core "CRUD ...
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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
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