[SQL Quest] Strengthen your SQL skills by solving real-world problems (Basic)

Big data is at the core of modern business, and one of the most essential tools for effectively managing and analyzing this data is SQL . Various media outlets are emphasizing the importance of SQL, and the growing demand for related training programs is testament to its growing demand.

We've all had experiences like this: after studying the theory as a child and solving the examples lightly, we got frustrated when the actual test came and the problems felt difficult, and when we were making notes of our wrong answers, we thought, "Why did I get it wrong even though I studied it all?"

Likewise, when it comes to query tests for getting a job as a data analyst or SQL queries that analysts encounter at work, it's clear that they've learned and seem to know them, but they often feel awkward and difficult when it comes to solving problems.🤦‍♂️

Solving these problems requires repetition of specific problem situations, understanding the problem-solving process through these repetitions, and developing adaptability. SQL Quest focuses on problem-solving (Quest Clear) based on various indicators and data used in the IT industry . This course will help you improve your skills through problems based on real-world business scenarios.

Many problems on the market involve pre-compiled data or real-world data examples that are far removed from practical applications. While these examples can help build fundamental SQL skills, they often make it difficult to address the diverse issues encountered in real-world situations.

💡 Problem structure that can be applied immediately in practice

• Many problems on the market involve pre-compiled data or real-world data examples that are far removed from practical applications. While these examples can help build fundamental SQL skills, they often make it difficult to address the diverse issues encountered in real-world situations.

• We use mobile game data specifically created for this course. This will further enhance your adaptability to practical data analysis. Furthermore, by working with both raw and aggregated data, you can develop the ability to respond to various issues arising from each.

• You'll gain firsthand experience with the diverse terminology used in the gaming and IT industries. Beyond simply writing and mastering SQL queries, you'll gain domain knowledge across the industry, giving you a competitive edge.

🌱 Progressive skill improvement through step-by-step learning

• Drawing on our expertise accumulated through numerous lectures, we've carefully considered the difficulty of each quest. The quests are systematically arranged to avoid repeating overly easy levels or abruptly increasing difficulty levels, which can discourage students from solving problems.

• Problem-solving skills can be improved through repetitive learning and lecture videos, and the program is structured in stages so that students can experience improvement in their skills rather than simply solving problems.

  
  

  
  

🎯 Focus On "SELECT"

• You'll focus solely on the SELECT statement and face related quests. As a data analyst or user of existing data, SELECT is the most frequently used syntax in practice, so you'll pursue efficient skill improvement through repeated understanding of this syntax.

• The goal of this course is not to train data experts or become database masters. Rather, it aims to improve data extraction and basic query skills in data analysis or within relevant departments.

• This course does not cover database fundamentals or the various SQL syntaxes (CREATE, ALTER, UPDATE, etc.). While proficiency in various DDL and DML techniques can be a valuable competitive advantage for analysts in the long run, this course does not cover these topics.

🎓 Experience processing data in a real-world environment: Using Google BigQuery

This course goes beyond simple SQL grammar and focuses on practical data analysis using Google's BigQuery. BigQuery is a rapidly growing platform in the fields of data analysis and data science, offering a competitive edge in the job market.

• Experience with industry-standard tools : BigQuery is used by many companies for large-scale data analysis. Experience using this platform adds real value to your resume and gives you an edge in the job market.

• Practical Data Analysis Skills : By learning with tools used in real-world work environments, students will gain practical, industry-ready data analysis skills.

• Understanding the latest technology trends : Using BigQuery helps you understand the latest data processing technologies and trends, providing a foundation for discussing modern data analysis methodologies in technical interviews.

In this course, you'll practice the skills essential for building a career as a data analyst and gain real-world experience that will give you a competitive edge in the job market.

🌟 SQL Quest Basic: The first step toward practical skills!

SQL Quest is designed with three difficulty levels: Basic, Intermediate, and Advanced. SQL Quest's "Basic" difficulty level is designed for everyone, from those still unfamiliar with SQL to those looking to solidify their fundamentals.

• Those who have not learned SQL for long

• Those who want to strengthen their basic skills

• Anyone who needs some light practice before a coding test

Although it is said to be Basic difficulty, it does not only cover basic query queries, but also provides various quests and explanations to help you become familiar with various terminology and gain a rich understanding of aggregate functions (MIN, MAX, AVG, SUM, COUNT, etc.) and CASE WHEN .

Not only will you gain sufficient practical skills with just the Basics, but we've also included questions of intermediate to advanced difficulty to help you gain a competitive edge on query tests. Take on the Level Up Quest and hone your skills in various functions and commands, including JOINs, subqueries, and WINDOW functions !

🚀 Join SQL Quest Basic today and take your SQL skills to the next level!