Master database querying from basics to advanced analytics. Learn to extract insights from data using SQL.
Follow courses in the recommended order
Learn the basics of SQL to query databases. Perfect for beginners with no prior experience.
Master JOINs, subqueries, and window functions for data analysis. Build on your SQL fundamentals.
Master subqueries and Common Table Expressions to write powerful, readable SQL queries.
Master window functions for powerful analytics: ranking, running totals, and advanced calculations.
Learn query optimization concepts, index strategies, and data modeling patterns for efficient analytics.
Handle messy, inconsistent real-world data with SQL string functions, NULL handling, and data cleaning techniques.