Understand Data Warehouse: Query Performance

Deciphering SQL Query Performance: A Practical Analysis in Data Warehousing and Database Management Systems

Unlike Python and other imperative programming languages, which require the explicit detailing of algorithms in a step-by-step manner to optimize, SQL is a declarative programming language that focuses not on the sequence of operations, but rather on expressing the logic of what you want to achieve. How a query is executed in the database depends on the database system itself, …

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