SQL Aggregate Functions

SQL Aggregate Functions

Author: Trevor Page: Java Guru | Programmer | Teacher June 5, 2014 Duration: 32:12

In today's podcast episode you'll be learning all about the aggregate functions that exist in SQL.

What the heck is an aggregate function? Well that's what I'm going to try and teach you today, and I promise, it's not a difficult concept to grasp. Just think of an aggregate function as a method that you're calling that will process data in your database and return a value. Obviously the returned value will depend on which of the aggregate functions you choose to use.

So that begs an obvious question, what are the aggregate functions that we can use in SQL? I'm glad you asked, here's the ones that I use all the time in MySQL:

  • MAX
  • MIN
  • SUM
  • AVG
  • COUNT

Okay, great! So now we know what the names of these functions are, now let's see some examples of them in use!


The How to Program with Java Podcast is a practical guide for anyone wanting to build software, from curious beginners to those looking to solidify their professional skills. Host Trevor Page, a seasoned Java guru and teacher, breaks down complex programming concepts into clear, manageable lessons you can apply immediately. You'll hear detailed walkthroughs on building applications, understanding core principles like object-oriented design, and navigating the tools of the trade. The discussions move beyond dry theory, focusing on the real-world logic and problem-solving that defines a career in software development. Whether you're aiming for a new job, tackling a personal project, or helping a child explore technology, this podcast provides a structured, conversational path forward. Each episode is crafted to demystify the process, translating technical jargon into plain English so you can focus on creating functional code. The tone is direct and encouraging, rooted in Trevor's experience as both a programmer and an educator. It’s a resource for building a tangible skill set, episode by episode, where consistent listening translates directly to growing competency. You’ll find the content naturally bridges the categories of technology education and career development, making it a useful companion for your learning journey.
Author: Language: English Episodes: 113

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