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📘 Download PostgreSQL Notes: https://kodyfier.com/notes/database/postgresql.html ----------------------------------------------------- In this PostgreSQL tutorial, you'll master one of the most important database concepts: Foreign Keys and Relationships. We'll start by understanding the real problem that relationships solve in relational ...
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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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