This repository includes my solutions to SQL challenges from HackerRank, covering a wide spectrum of topics from basic querying to complex joins and aggregations. Each solution aims to be efficient, readable, and well-structured, making this a helpful reference for anyone learning SQL or preparing for database-related technical interviews.
Topics Covered:
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SELECT statements and filtering
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Aggregations and GROUP BY
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JOIN operations
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Subqueries and Set Operations
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Advanced queries (e.g., window functions, ranking)