Most SQL Developers Get This Wrong #sql #tutorial
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YouTubeManish Sharma
Most SQL Developers Get This Wrong #sql #tutorial
Most SQL learners get NULL completely wrong — and it silently breaks their queries without a single error message. In this video, you will learn exactly why NULL = NULL returns FALSE in SQL, why you should never use = NULL in your WHERE clause, and how NULL behaves differently in COUNT, JOINs, and aggregations. This is one of the most common ...
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SQL Injection Attacks
Comment NGULIK SQL ya. Sekarang belajar SQL bisa langsung Query di browser. Datanya udah ada, tantangannya udah siap, materinya udah ada juga. Tinggal query aja deh. Kamu bisa belajar dari dasar disini ya. Mulai dari yang gratis, update sesuai kebutuhan. #sql #data
0:21
Comment NGULIK SQL ya. Sekarang belajar SQL bisa langsung Query di browser. Datanya udah ada, tantangannya udah siap, materinya udah ada juga. Tinggal query aja deh. Kamu bisa belajar dari dasar disini ya. Mulai dari yang gratis, update sesuai kebutuhan. #sql #data
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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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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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