SQL & Enterprise Databases

Advanced/Window / Analytical Functions

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Curriculum Lesson Objective

Ranking Functions: ROW_NUMBER(), RANK(), DENSE_RANK(), NTILE()

Master the four core ranking functions: ROW_NUMBER(), RANK(), DENSE_RANK(), and NTILE() for duplicate removal and top-N analysis.

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OVER() Clause, PARTITION BY & ORDER BY in Window Functions

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Value / Offset Functions: LEAD(), LAG(), FIRST_VALUE(), LAST_VALUE()