This repository contains structured SQL query implementations based on curated HackerRank problems.
The goal is to consolidate commonly used SQL patterns relevant to real-world data engineering scenarios.
- Data Filtering & Conditional Logic
- Aggregations & Grouping
- Join Strategies (INNER, LEFT, multi-table joins)
- Subqueries & Nested Queries
- Query structuring patterns
Even with professional experience, refining core query patterns strengthens performance optimization, readability, and structured query design in production environments.
Note: Problem statements are not included to respect platform policies.