How to Use the Query Optimizer in SQL Server - Search Videos

Query Optimizer Deep Dive (AD) | Uwe Ricken | 17 comments

Query Optimizer Deep Dive (AD) | Uwe Ricken | 17 comments

When will people with their great SQL tips finally understand that SQL is a declarative language, not a procedural one? JOIN order matters... NOT! ORDER OF GROUP BY matters... NOT! SUBQUERIES (in general!) in WHERE are... NOT better than CTEs. BTW: Better to use EXISTS instead of IN as a WHERE condition! NULL checks will ALWAYS give different ...

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