Скачать или смотреть LeetCode - 185. Department Top Three Salaries (SQL)

Welcome to the detailed solution and walkthrough for the SQL challenge 'Department Top Three Salaries' from LeetCode.

Concepts Covered:
-- Common Table Expressions (CTEs): Learn how to use CTEs for creating temporary result sets that can simplify complex queries. This query uses a CTE to perform advanced calculations and then reference those results in the main query.
-- Window Functions (DENSE_RANK()): Explore the use of the DENSE_RANK() window function to rank items within a partition. This function is crucial for ordering data within subsets, such as employees within departments.
-- Partitioning in Window Functions: Understand how to partition data using the PARTITION BY clause in window functions. In this query, it's used to group employees by department before applying the ranking.

Whether you're prepping for interviews or refining your SQL skills, this solution will provide you with practical insights and a clearer understanding of some pivotal SQL techniques.

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