SQL Guroo Blog

Master the art of writing cleaner and more efficient SQL queries by understanding when to use subqueries versus Common Table Expressions (CTEs).

Crack the case of the stolen museum diamond with your SQL skills!

Master SQL techniques for calculating Month-over-Month and Year-over-Year growth rates to analyze business performance trends.

Master SQL window functions to analyze time-series data, calculate running totals, and identify trends in your analytics workflows.

Master advanced SQL aggregation techniques to transform raw data into meaningful insights for data science and analytics workflows.