1 May 2025 Jakub Romanowski Free Course of the Month: 2025 Monthly SQL Practice Sets – Basic Ready to sharpen your SQL skills with real-world challenges? We’ve got something special for you! Our 2024 Monthly SQL Practice Sets - Basic course is completely free throughout May 2025 – and it’s the perfect way to improve your SQL by doing, not just reading. Hey, got a minute? If you're looking to boost your SQL skills, now's the perfect opportunity. We've just made our 2024 Monthly SQL Practice Sets - Basic course completely free for the entire month of May 2025. Read more 1 May 2025 Jakub Romanowski Exploring the Future of MS SQL Server Careers: Opportunities, Trends, and Growth When people search for "the future possibility of a career in MS SQL Server," they’re usually looking for more than just reassurance – they want clarity. Is this a smart field to commit to? Will the jobs still be around in five or ten years? And if they double down on SQL Server, will it actually lead to better opportunities? The good news is that all signs point to yes – but the answers are more nuanced than a simple yes or no. Read more 24 Apr 2025 Jakub Romanowski The Hidden Cost of bad SQL Queries: Performance and Business Impact The cost of bad SQL queries isn’t just slow reports or laggy dashboards: it’s wasted server power, higher infrastructure bills, and even frustrated customers when things don’t load fast enough. If your database is working harder than it should, your business is paying the price. Let’s break down how inefficient queries hurt performance and why fixing them matters. Ever had a query that takes forever to run and wondered what's going on? Read more 10 Apr 2025 Jakub Romanowski Build a Product Inventory Dashboard With SQL Keeping track of your inventory can be a headache, especially when stock shortages or excess products start causing problems. A product inventory dashboard built with SQL makes it easier to stay on top of stock levels, sales patterns, and reorder points. Instead of guessing when to restock or worrying about over-ordering, you can use data to make smarter decisions. With the right SQL queries, you’ll be able to monitor trends, track sales, and manage your inventory like a pro. Read more 3 Apr 2025 Jakub Romanowski Converting Data Types in SQL: Essential Techniques for Data Analysts Converting data types in SQL is an important skill for data analysts who deal with diverse datasets. Whether you're ensuring compatibility between different types of data or optimizing performance, knowing how to handle conversions effectively can save time and prevent errors. This guide explores key SQL data type conversion techniques, explains their real-world applications, and provides practical advice to help you write more efficient queries. By the end, you'll have a clear understanding of how to work with SQL conversions in a way that enhances both accuracy and performance. Read more 1 Apr 2025 Jakub Romanowski Why Learning SQL Beats Relying on AI: Understanding Data Still Matters SQL is a fundamental skill for working with data. While AI tools can assist in query generation and automation, they cannot replace the need for human understanding of database structures, query optimization, and data integrity. Knowing SQL ensures better control over your data and helps you make informed decisions. In this article, I will explain why SQL remains an essential skill, even in the AI era. Artificial Intelligence (AI) can generate SQL queries, automate processes, and assist in data management. Read more 1 Apr 2025 Jakub Romanowski Course of the Month: Revenue Trend Analysis in PostgreSQL Updated on: April 1, 2025 Need to understand what your data is saying about your business? In April 2025, our Free SQL Course of the Month is Revenue Trend Analysis in PostgreSQL. Don't miss this opportunity to elevate your analytical capabilities with a leading database system! Understanding revenue trends is crucial for business success, but effective data analysis can be challenging. Dive into the world of SQL reports and enhance your business growth strategies with PostgreSQL. Read more 25 Mar 2025 Jakub Romanowski What do our Users Think About the SQL Basics Course? Learning the basics of SQL is honestly one of the best decisions you can make right now. Think about how many industries rely on data – marketing, finance, tech, and even healthcare. In this article, I’ll show you why the SQL Basics course at LearnSQL.com is so popular and how it’s helped over 350,000 people level up their SQL skills. This awesome and interactive course has everything you need to get started. Read more 13 Mar 2025 Jakub Romanowski How to Transition From Excel to SQL: A Data Analyst's Perspective If you work with data, chances are you’ve spent countless hours in Excel – filtering data, writing formulas, and dragging cells across columns. Excel is a great tool but, at some point, it starts to slow you down. Huge files crash. VLOOKUPs become a nightmare. PivotTable takes forever to update. That’s when SQL comes in. It’s like Excel’s powerful, more scalable sibling. And the best part? If you know Excel, you already understand many SQL concepts. Read more 3 Mar 2025 Jakub Romanowski Course of the Month: Window Functions in PostgreSQL Are you looking for the best way to master SQL window functions? Throughout March 2025, you can access the interactive course Window Functions in PostgreSQL for free. Boost your skills at no cost. Hurry, time is running out! Need a free PostgreSQL course on window functions? You've come to the right place! If you are reading this article, you probably know PostgreSQL is one of the most popular databases in the world. Read more «« « 1 2 3 … 14 » »»