Aggregate Functions (SUM, COUNT, AVG)

# Aggregate Functions (Sum, Count, Avg) in SQL: A Comprehensive Guide SQL aggregate functions are powerful tools that allow you to summarize and analyze data from your database tables. Specifically, `SUM`, `COUNT`, and `AVG` are fundamental functions used to calculate totals, count rows, and determine averages. Mastering these functions is crucial for anyone working with databases, from data analysts to application developers. **Why learn about aggregate functions?** Imagine needing to calcu