SQL Aggregate Functions for Data Analysis

Data is only as valuable as the insights you can extract from it. To make sense of large datasets, you must know how to summarize, group, and analyze records efficiently rather than reading them row by row. This text-based course guides you from foundational database concepts to writing analytical queries using SQL aggregate functions. You will transition from writing basic database queries to performing complex data summarization and calculation. By studying clear explanations and structured SQL queries, you will learn how to turn thousands of database rows into concise, actionable metrics. What you'll learn: - Understand foundational SQL concepts and how the database engine processes grouped data - Calculate key business metrics using core aggregate functions like SUM, AVG, COUNT, MIN, and MAX - Group your data effectively using the GROUP BY clause to perform multi-level analysis - Filter aggregated query results using the HAVING clause to isolate specific data trends - Handle NULL values properly within aggregate calculations to avoid common reporting errors - Combine aggregates with basic conditional logic to build dynamic, responsive summary reports This course begins with essential database definitions and core terminology before moving into practical query structures and logic. You will progress through realistic data scenarios, learning how to structure queries for real-world business analysis. This course is designed for absolute beginners, data enthusiasts, and aspiring analysts who want to build a solid foundation in SQL aggregation. No prior database experience is required. Start reading today to unlock the analytical power of your data.