Aggregate Functions & Grouping
COUNT, SUM, AVG, MIN, MAX: Overview
Use COUNT, SUM, AVG, MIN, MAX correctly in your queries Understand how these functions collapse multiple rows into single summary values Handle NULL values prop
Use COUNT, SUM, AVG, MIN, MAX correctly in your queries
Understand how these functions collapse multiple rows into single summary values
Handle NULL values properly in aggregate calculations
Combine aggregates with WHERE clauses for filtered reports
Use aggregates with GROUP BY for grouped summaries
Read and interpret aggregate results in business contexts
Apply aggregates to answer real business questions
Use COUNT, SUM, AVG, MIN, MAX correctly in your queries
Understand how these functions collapse multiple rows into single summary values
Handle NULL values properly in aggregate calculations
Combine aggregates with WHERE clauses for filtered reports
Use aggregates with GROUP BY for grouped summaries
Read and interpret aggregate results in business contexts
Apply aggregates to answer real business questions