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 24 Feb 2025 Jakub Romanowski The Most Common PostgreSQL Commands: a Beginner's Guide PostgreSQL is more than just a database – it’s the trusted tool behind some of the most demanding data projects out there. From analyzing sales trends to powering apps with real-time data, PostgreSQL commands let you take control of your data with precision and speed. In this article, I’ll walk you through the most common PostgreSQL commands that beginners need to know. Did you know that PostgreSQL is one of the most loved databases out there? Read more 20 Feb 2025 Jakub Romanowski What Your Favorite SQL Query Says About You SQL isn’t just about crunching data: it’s a peek into how you tackle problems and think about the world. In this article, I’ll dig into the quirks and traits behind some of the most popular SQL queries. Let’s see which one feels like you! Ever caught yourself wondering what your go-to SQL queries reveal about your personality? Whether you're going deep into SELECT * or crafting complex CASE statements, every choice reflects a bit of who you are. Read more 4 Feb 2025 Jakub Romanowski How SQL can Make Your Life as an Accountant Easier SQL for accountants is a powerful tool that takes your work beyond the limits of Excel. If you’ve ever faced a giant spreadsheet that refuses to load or spent hours on repetitive tasks, SQL can make your life so much easier. Let’s be real: Excel is great, but there comes a point when it’s just not enough. If you’ve ever stared at a giant spreadsheet that takes forever to load, you’ll know what I mean. Read more «« « 1 2 3 … 13 » »»