COUNT() Aggregate Function
SUM() Aggregate Function
AVG() Aggregate Function
GROUP BY Clause
Aggregate functions perform a calculation on a set of values and return a single value:
Trends in Startups
In this next Pro project, we're going to practice aggregate functions in SQL so you can hone your skills and feel confident taking them to the real world. Using these functions will combine row values together and return a single result. What's next? It's your first day as a TechCrunch reporter and you need SQL! You got this!
How to Hack Hacker News
Use the SQL commands you have just learned to dig through Hacker News posts data. Thank you Hacker News for the data!