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8 Jun 2023
Alexandre Bruffa
Unleash the Full Potential of Your Data: Enhancing SQL with Python
In this article, we will explain why using SQL with Python is an awesome combination for unleashing the full potential of your data! Read on to find out how learning and starting to use the most popular programming language can have a positive impact on your work. You may be wondering why we write about Python on the LearnSQL.com blog? Well ... They are just a very good couple. Both languages are basic tools in such fields as data science and data visualization.
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6 Jun 2023
Martyna Sławińska
How to Use SUM() with OVER(PARTITION BY) in SQL
Discover real-world use cases of the SUM() function with OVER(PARTITION BY) clause. Learn the syntax and check out 5 different examples. We use SQL window functions to perform operations on groups of data. These operations include the mathematical functions SUM(), COUNT(), AVG(), and more. In this article, we will explain what SUM() with OVER(PARTITION BY) does in SQL. We’ll show you the most common use cases in real-world applications to determine the ratio of the individual row value to the total value, calculate running totals, and find a custom order total that includes discounts for certain products.
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5 Jun 2023
LearnSQL.com Team
MySQL Cheat Sheet
Welcome to the MySQL cheat sheet! Whether you're just starting out with MySQL or you're a seasoned professional looking for a quick reference, this guide is tailor-made for you. This MySQL Cheat Sheet provides a concise and handy reference to the most commonly used MySQL commands and functionalities. It spans a range of topics, from connecting to a MySQL server and managing database contents, to the basic syntax for table creation and modification.
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1 Jun 2023
Jakub Romanowski
Free SQL Course of the Month – PostgreSQL INSERT, UPDATE, and DELETE Commands
Do you want to be a data engineer or data analyst? Do you work with databases daily and need to expand your skills with the basics of data manipulation? You've come to the right place. For June 2023, our SQL course of the month is PostgreSQL INSERT, UPDATE, and DELETE Commands! Learn SQL for FREE! How do you get this free PostgreSQL course in June? Create a free LearnSQL.
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1 Jun 2023
Nicole Darnley
Why Do You Need SQL to Work With Google BigQuery?
Data is just as important to your business as investing or accounting; that’s why many people use Google’s BigQuery data warehouse. In this article, we'll discuss why you should learn SQL if you want to start using BigQuery. Unleash the power of your data! In the ever-growing landscape of data-driven decisions, organizations are continuously on the lookout for tools that can help them handle and analyze their data efficiently. Enter Google BigQuery: a powerful, Cloud-based data warehouse designed to store and analyze massive datasets in record time.
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31 May 2023
LearnSQL.com Team
New Monthly SQL Practice for June 2023!
In our June 2023 SQL Practice, you’ll meet David. He manages an online pet store and needs you to find various statistics for further development. Can you use your SQL skills to help him? It shouldn’t be too hard if you have finished our SQL Basics course or otherwise understand core SQL concepts. Our interactive SQL course is a great way to test your skills and see if you can put what you've learned so far into practice.
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30 May 2023
Gustavo du Mortier
How to Use SUM() with GROUP BY: A Detailed Guide with 8 Examples
Explore some real-world examples of using SUM() and GROUP BY in SQL, from the most basic to the most sophisticated. SUM() is a SQL aggregate function that computes the sum of the given values. GROUP BY is a SQL clause that partitions rows into groups and computes a stated aggregate function for each group. Using these two functions together, you can compute total sums for a group of rows. In this article, we’ll see 8 different examples of how you can combine SUM() and GROUP BY to create many different reports.
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25 May 2023
Maria Durkin
The Best Database Books You Should Read Now
So, you're interested in databases and looking for some database book recommendations. In this article, we’ll take a look at our top database book recommendations to feed your brain. In essence, databases are like digital filing cabinets. They have the ability to organize, store, and retrieve data. Large amounts of data are stored, managed, and made easily accessible by using databases. Additionally, databases make it possible for data to be organized into tables, which makes searching and sorting easier.
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23 May 2023
Nicole Darnley
How to Write a Recursive CTE in SQL Server
A guide to understanding and using recursive CTEs in SQL Server SQL Server offers a lot of powerful tools for working with data, including Common Table Expressions (CTEs). A CTE is a temporary named result set that you can reference within a SELECT, INSERT, UPDATE, or DELETE statement. CTEs can break down long queries into smaller, more manageable pieces of logic and make them more readable. SQL Server offers recursive Common Table Expressions.
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18 May 2023
Kamila Ostrowska
How to Learn SQL Without Any Programming Knowledge
If you think that learning SQL is only for programmers, you are deeply wrong. This skill is totally within your grasp! SQL is not just popular and in demand; it’s also quite easy and intuitive to learn. Read on to find out more! You’re searching for inspiration on how to start learning SQL. Maybe you want to change your job, or want to become more competitive in the job market.
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