4. Aggregate Functions for Data Analysis

Learning Objectives

By the end of this chapter, you will be able to:

• Explain the conceptual logic of aggregation
• Identify the common SQL aggregate functions
• Use the GROUP BY clause to aggregate and combine groups of data for analysis
• Use the HAVING clause to filter aggregates
• Use aggregate functions to clean data and examine data quality

In this chapter, we will cover SQL's aggregate functions, which are powerful functions for summarizing data.