Course of the Month: SQL Reports in PostgreSQL

If you are looking for a course that takes your PostgreSQL skills to a completely different level, you've come to the right place. You can learn for free in April! We chose SQL Reporting in PostgreSQL for our Free SQL Course of the Month. It's just awesome – I'll tell you why.

Do you want to be even better at SQL? Do you know the basics and want your SQL reports to be even more sophisticated? Or maybe you are just starting your adventure with PostgreSQL and want to gain new skills. In any case, you've come to the right place. This is the best SQL reporting course for the PostgreSQL database.

Throughout April 2023, you can develop your analytical skills with free access to our interactive course on Creating Basic SQL Reports in PostgreSQL!

At LearnSQL.com, we choose one of our SQL courses each month and make it available to our users for free. The rules are simple. This SQL course is free; you risk nothing.

Here's what you need to do to take the SQL Reports in PostgreSQL course for free, without spending a dime:

• Create a free LearnSQL.com account or log in if you already have one.
• Start the course. You have free access to its content until the end of April 2023.

Why should you trust LearnSQL.com? Well, thousands of people have benefited from our SQL courses. We know some may have more difficult lives and need just a little help to get back on their feet. So, we give our users a chance to learn SQL for free. Nothing stops you now from being successful.

What Are SQL Reports?

Since you are reading this article, you probably know that SQL is a language for working with relational databases. It has been a standard in the IT industry for several decades. If you are serious about your career, you should learn it.

One of the most popular databases is PostgreSQL. It is open source, is still gaining in popularity, has a huge online community, and is highly sought after by employers. Still hesitating? Read “The Future of SQL” then come back here for a free SQL course.

But let's go back to the SQL reports themselves. What are they all about?

Imagine your company has a database containing, for example, data on customers, transactions, money flows, etc. Lots of data. To obtain, for example, a list of customers who have spent the most on specific products in a given period, it is best to use SQL.

Why? Because SQL is the easiest way to compile the data contained in databases. Instead of worrying about how to do it or what is happening inside the database, you just write an SQL query and get the result – in our case, an SQL report.

You can struggle with a spreadsheet, or you can write a few lines of SQL code and get the data you need. For a detailed example, see the article “How to Calculate Revenue Growth in SQL.”

Of course, more complicated and complex reports require the use of more advanced features of SQL. There will be time for them later; for now, start with the basics. This course is perfect for that.

SQL reports are very often the basis for strategic business decisions. In most industries, the reality is you're either data-driven or you're out. Don't get beat by the competition! Check out “Why Does Your Company Need Data Analysis?” for more information.

What Will You Learn in Creating Basic SQL Reports in PostgreSQL?

Our course is designed to guide you through the entire learning process. Don't worry that it might be too difficult. If you know the basics of SQL, you’ll do fine. If you have never written a single PostgreSQL query, start with our course on SQL Basics in PostgreSQL, then come back here.

By choosing our interactive PostgreSQL course, you’ll learn to build SQL reports from scratch using PostgreSQL’s GROUP BY and aggregate functions. You’ll learn how to manage long queries, how to include multiple metrics in a single SQL query, and how to work with a PostgreSQL database with multiple tables.

The first exercise is a warm-up. Here, you’ll refresh your skills by writing basic queries. You’ll also learn about the database model we work on.

You’ll use aggregate PostgreSQL functions to count objects based on your criteria and to calculate total amounts based on other objects.

The next step for successful data analysis is classification. You’ll learn to do this with CASE WHEN and GROUP BY. Very few SQL reports are possible without these two clauses, so it's important to know them well. In this part of the course, you’ll also learn about the most common beginner mistakes and how to avoid them.

Last but not least, you’ll find out how to compare different business groups in the same SQL report. There are three ways to do it and you’ll learn them all.

In this month’s free SQL course, you’ll also learn how to:

• Use PostgreSQL aggregate functions such as COUNT() and SUM().
• Calculate average values, maximum averages, and minimum averages.
• Insert multiple metrics in SQL reports.
• Calculate ratios and percentages.
• Compare global and granular metrics.
• Use common table expressions (CTEs).

Why Choose LearnSQL.com Courses?

Whatever you want to learn, the most important thing is to find a credible and reliable source of information. Of course, you can learn from YouTube or from courses offered by platforms that teach a bunch of unrelated subjects at the same time.

However, it is much better to choose a platform focused only on what you want to learn. It’s a better way of gaining knowledge; see the testimonials and ratings from satisfied users for more proof.

What makes LearnSQL.com different? Our courses are created by expert enthusiasts – we really love databases! We know what you need, and we give it to you in the simplest and most effective form.

Our courses are interactive. They provide a real hands-on learning experience. You write real SQL queries and see their results. You don't need to install anything or set anything up. As long as you have Internet access and a browser, you can learn SQL with us.

Who Should Take This Course?

The Creating Basic SQL Reports in PostgreSQL course consists of 97 interactive SQL exercises. We estimate it takes about 10 hours to complete. If you would like to become a data analyst or manage your business based on data, this is the perfect course for you. It’s also useful for students preparing for a computer science exam. Are you a student? After completing the course, check out our educational offer.

Upon completion of this course, you’ll receive a personalized certificate of completion. You can put it on your LinkedIn profile or show it off to your colleagues and boss.

Learn SQL Reporting in PostgreSQL for Free in April 2023

If you learn to create basic reports in PostgreSQL – a useful skill – your value in the labor market increases significantly. There is a great demand right now for people who can create reports and write PostgreSQL queries. Just check the job advertisements. These are the most popular job hunting platforms for SQL and database jobs.

You don't even have to quit your current job. You can work as a freelancer and implement SQL projects remotely. See how to do it effectively and profitably.

If you want more PostgreSQL, try our SQL from A to Z in PostgreSQL track. It is a perfect learning path to becoming an SQL expert. It contains nine interactive SQL courses:

• SQL Basics in PostgreSQL
• Common Functions in PostgreSQL
• PostgreSQL INSERT, UPDATE, and DELETE Commands
• Creating Basic SQL Reports in PostgreSQL
• Window Functions in PostgreSQL
• Recursive Queries in PostgreSQL
• Writing User-Defined Functions in PostgreSQL
• PostGIS
• GROUP BY Extensions in PostgreSQL

You may think this is a huge challenge. Well, it is! But it's really worth it. With our courses, you gain unique skills that allow you to achieve your goals.

It's time to learn PostgreSQL! Grab a cup of coffee or your favorite tea and start learning today with this interactive free Creating Basic SQL Reports in PostgreSQL course!