In the world of business analytics, data is the foundation of every decision — and SQL remains the most essential skill for anyone aspiring to become a Business Analyst. Whether you’re working with structured databases like MySQL, SQL Server, or PostgreSQL , or unstructured systems like MongoDB , the ability to extract, clean, and analyze data efficiently is what differentiates a good analyst from a great one. This comprehensive guide — “Top 100 SQL, MySQL, SQL Server, Postgr

Learn how to use SQL Window Functions like ROW_NUMBER(), RANK(), LAG(), and SUM() OVER() to analyze data efficiently. Master SQL analytics and elevate your data skills. Introduction SQL is the cornerstone of data analysis and manipulation. While most users are familiar with SELECT, WHERE, and GROUP BY, few explore one of SQL’s most powerful and often underutilized features - Window Functions . If you've ever struggled to calculate rolling averages, rank items within groups, o

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Data Science and why you should learn it.