Unleash Your SQL Superpowers by Embracing these Key Insights Before Crafting Your First Query — Are you ready to embark on a thrilling journey into the realm of SQL? As a SQL newbie, it’s natural to be excited and perhaps a little overwhelmed. Fear not! …

Unlocking Success Through Effective Communication, Storytelling, and Patience — Data analysis has become an integral part of decision-making in today’s data-driven world. As a Data Analyst with two years of experience, I have discovered that technical skills alone are not enough to excel in this field. It is the combination of technical prowess and three crucial soft skills —…

Covers all SQL concepts of JOIN, Aggregates, Window functions, and Subqueries — If you’re looking to strengthen your SQL skills and become a proficient data professional, you’ve come to the right place. In this article, I have handpicked seven highlighted problems that will put your SQL knowledge to the test. Each problem comes with a detailed solution and an introduction to the…

In today’s data-driven world, organizations across industries are racing to harness the power of data science and analytics. With promises of unlocking valuable insights, driving informed decision-making, and staying ahead of the competition, it’s no wonder that data initiatives have become the focal point for many businesses. …

Nested subqueries are a powerful tool for extracting specific data from a dataset. However, they can also be challenging to write and optimize, especially when dealing with large datasets. In this article, we’ll explore three challenging problems of working with nested subqueries and their solutions. Problem 1: Finding the Maximum Value from a Nested Subquery The problem here is to…

Discovering the 6 Key Phases of Data Analysis: Ask, Prepare, Process, Analyze, Share, and Act — Data analysis is the process of extracting insights and meaning from raw data to make informed decisions. Effective data analysis requires a systematic approach that involves several key phases. …

Data analysts are often confronted with complex challenges that require creative and innovative solutions. Luckily, SQL (Structured Query Language) can help analysts tackle some of the most challenging problems they encounter. In this article, we will explore two of these problems and provide solutions using SQL. Identifying Duplicate Records in a Large Dataset Duplicate records can be…

Interested in becoming a data scientist? Here are some critical data science skills that you will need in order to make the career change. For each data science skill listed, there is also corresponding advice and resources on how to improve that specific skill. …

The role of a data analyst in a company has become increasingly important in recent years, particularly as companies have recognized the value of data-driven decision-making. Data analysts use data to provide insights that inform decision-making in various areas, including product development, pricing, and marketing strategies. …