Articles Cookbook
19 Apr 2024
Jakub Romanowski

Enhancing Decision-Making with SQL

If you’ve ever felt overwhelmed by inefficient workflows, there’s hope. In this article, I'll show you how smart decision-making with SQL can boost your career. You will explore practical SQL strategies that go beyond organizing data, and fundamentally transforming decision-making in your company. Are you a business professional keen on boosting your data management skills? Well, SQL—or Structured Query Language—might just be your ticket to greater efficiency. It’s a robust tool that can transform the way you interact with data.
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18 Apr 2024
Tihomir Babic

GROUP BY and Aggregate Functions: A Complete Overview

SQL’s GROUP BY and aggregate functions are essential in data aggregation – and for analyzing data and creating reports. Let’s explore them together!   In SQL, GROUP BY and aggregate functions are one of the language’s most popular features. Data aggregation is critical for data analysis and reporting; to make sense of all the data in a dataset, it often needs to be aggregated. But what is data aggregation? Put simply, it’s when you group data based on common values and perform a calculation for each data group.
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16 Apr 2024
Agnieszka Kozubek-Krycuń

SQL MAX Function

Learn about the SQL MAX function, which is used to find the highest value in your dataset. This article explains how to use the syntax of MAX function and shows typical usage examples. The SQL MAX function is an aggregate function that returns the maximum value in a column. MAX function, together with its counterpart MIN function, is useful for summarizing data in data analysis. It can help you to compute the range of values in a dataset.
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16 Apr 2024
Maria Durkin

25 SQL Interview Questions for Data Analysts

You have an upcoming interview for a data analyst position and SQL is one of the skills that will be tested. Well, these SQL questions for data analysts are specifically tailored for you! SQL is a must-have skill in every data analyst's toolkit. It simplifies data extraction and manipulation, allowing analysts to convert raw data into actionable insights. It enables analysts to perform ad hoc analyses, accelerating organizational decision-making processes.
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11 Apr 2024
Alexandre Bruffa

Is the Data Analyst Still in Demand in 2024?

In 2024, the demand for data analysts will rise as businesses increasingly rely on data to make strategic decisions. In this article, we explore the importance of data analysts in shaping the future of data analysis. With the rise of AI, many wonder if the demand for data analysts will remain strong. After all, the data analytics industry has witnessed a remarkable transformation. It’s evolved into a pivotal force driving decision-making processes across various sectors.
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10 Apr 2024
LearnSQL.com Team

Your Guide to SQL Practice at LearnSQL.com

Explore a variety of SQL practice opportunities at LearnSQL.com and take your data analysis skills to the next level. Whether you're a beginner or an advanced user, our learning resources are designed to help you master SQL through hands-on learning and real-world usage scenarios. SQL, or Structured Query Language, is a powerful tool used extensively in data analysis. It allows you to access and manipulate databases quickly and efficiently. Whether you are working in finance, healthcare, tech, or almost any other industry, SQL helps you extract and analyze data.
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9 Apr 2024
Radu Gheorghiu

SQL IN Operator

Why do you need to know SQL IN? Find out what you can do with this small but powerful operator. The IN operator is a fundamental tool in SQL, enabling data analysts and developers to filter and retrieve specific subsets of data from databases. While its basic usage may seem straightforward, mastering the nuances and advanced applications of the SQL IN operator can greatly enhance your SQL skills and lead to more powerful and optimized queries.
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8 Apr 2024
LearnSQL.com Team

Does Data Analytics Require Coding

Thinking about a future in data analytics? You might be pondering the need for coding skills. Is it necessary to be good at programming? As the worlds of data analytics, technology, and data science merge, the importance of coding becomes clearer. It’s crucial to understand which programming languages are key and how much expertise you need, making the journey into this vibrant field less daunting. In this article, we're going to focus on the importance of coding, particularly SQL, for data analytics.
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4 Apr 2024
Martyna Sławińska

SQL Numeric Functions

Review all the SQL numeric functions, including their definitions and examples. SQL’s numeric functions perform operations on numbers. They take one or more numbers as arguments and return a number as output. Note that numbers may be of different data types, including integers, doubles, and floats. You can learn more about numeric and decimal data types here. SQL numeric functions can be divided into scalar and aggregate functions. Scalar functions compute a result for each input row individually.
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2 Apr 2024
Maria Durkin

Building a Data Analyst Portfolio: All You Need to Know

In a competitive job market, it is not enough to simply have the necessary skills; you must also demonstrate them. This is where a well-crafted data analyst portfolio comes into play. In data analytics, a portfolio is more than just a collection of projects; it serves as proof of an analyst's abilities and is critical to standing out. It demonstrates concrete capabilities in data cleaning, analysis, and visualization as well as the ability to effectively communicate insights.
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