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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 Server Tutorial
Você sabia que existe um jeito de pensar SQL que evita a maioria dos erros? #bancodedados #mysql #postgresql #sqlserver #oracle #sqlite #mariadb #programação #python #php #sql #analisededados #blogdosql
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