Articles Cookbook
3 Dec 2024
Jill Thornhill

SQL CAST() Function: An Overview

The SQL CAST() function converts one data type to another. This article discusses what the function is for, and when and how you’d use it. In relational databases, every column has a defined data type that controls what kind of data is stored in the column and how that data can be used. For example, a product description is likely to be stored as a string of text, and you couldn’t use it for arithmetic (e.
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3 Dec 2024
Jakub Romanowski

Top Advanced SQL Courses to Take in 2025

Are you looking to improve your SQL skills and master advanced SQL? This can be an incredible way to take your data work to the next level. Whether you’re in data analysis, data science, marketing, or finance, knowing how to write complex SQL queries can make a real difference. Advanced SQL can help you uncover meaningful insights, streamline processes, and truly stand out in your role. So, I’ve put together a list of the best advanced SQL courses you can take in 2025.
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2 Dec 2024
Jakub Romanowski

Course of the Month: SQL Practice – A Store

Updated on: December 2, 2024 This December, seize the opportunity to learn and practice SQL for free with our Basic SQL Practice: A Store course. Designed for an interactive and hands-on learning experience, this course starts with SQL basics and guides you through crafting queries that underpin business intelligence. Ready to get a grip on the fundamentals of SQL and dive into practical database management? Our December Course of the Month, Basic SQL Practice: A Store, is your perfect match!
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30 Nov 2024
LearnSQL.com Team

New Monthly SQL Practice for December 2024!

Ready for a new basic SQL challenge? This time, you will help Paige Turner, a local book club organizer, analyze her meeting data. Get ready to dive into the world of SQL queries as you help Paige enhance the reading experience for the members of her club! Welcome to the December SQL Practice course! In our December 2024 SQL Practice, you will meet Paige Turner, the organizer of a local book club.
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28 Nov 2024
Ekre Ceannmor

SQL Queries for Google Sheets

Power up your data analysis skills by utilizing SQL queries for Google Sheets! This comprehensive guide will demonstrate how to use the QUERY function to combine the power of SQL with the accessibility of Google Sheets! Looking to make data analysis in Google Sheets faster and more powerful? The QUERY function lets you filter, sort, and analyze data just like you would in SQL – without leaving your spreadsheet! In this article, we will break down everything you need to get started using SQL queries for Google sheets.
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26 Nov 2024
Ekre Ceannmor

How to Start Coding SQL in VS Code

Looking to enhance your SQL development? Our guide covers everything you need to get started with SQL in Visual Studio Code, the world's most popular IDE. Discover setup tips, extensions, database connections, and more to streamline your SQL coding experience. Visual Studio Code (VS Code) is currently the world’s most popular integrated development environment (IDE). It supports a variety of programming languages, and its massive community creates a lot of different extensions that help streamline your work or unlock even more potential within the IDE.
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21 Nov 2024
Jakub Romanowski

SQL Skills Beyond Data Analysis: Why Non-Data Professionals Should Learn SQL

SQL isn’t just for techies—it’s a skill anyone can learn and use, no matter what their job is. It can help you handle data with ease, make better decisions, and save time on tasks. Read on and I’ll show you how learning SQL can benefit your career, and how to get started. You might think SQL is only for data geeks, but it’s a skill that can benefit anyone, even if your job doesn’t involve data every day.
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20 Nov 2024
Tihomir Babic

SQL Interview Questions for Software Testers

SQL is a crucial skill for software testers. Otherwise, how would they get the data to test? Interviewers for these jobs may ask you several SQL software testing questions. So, if you’re preparing for a job interview, you’ll need to know how to answer these ten common SQL questions.  Why do software testing interview questions include SQL? Well, software testers commonly use Structured Query Language in their daily tasks.
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17 Nov 2024
Jakub Romanowski

Black Week Sale: Master SQL With up to 75% Off

Black Week has arrived and LearnSQL.com is offering unbeatable discounts for those looking to learn SQL and enhance their data skills. With up to 75% off, now is the ideal time to master SQL without overspending. Now is the perfect time to invest in your professional growth: get 75% off our All Forever Package. This isn't just a discount—it's your chance to boost your data analysis skills without overspending. Whether you're a complete beginner or have some SQL experience, our Black Week offer provides high-quality, flexible learning options at unbeatable prices.
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14 Nov 2024
Gustavo du Mortier

INNER JOIN vs. OUTER JOIN: What’s the Difference?

Deciding when to use INNER JOIN vs. OUTER JOIN is often challenging for beginners. In this article, you will find explanations and examples that will help you better understand the difference between these two joins. In SQL, JOINs allow you to combine data from different tables; INNER JOIN and OUTER JOIN are simply types of JOIN statements. Understanding their differences is critical if you work with relational databases. It is also crucial if you’re going for an SQL job interview: the difference between INNER JOIN and OUTER JOIN is among the most frequently asked SQL interview questions.
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