Adventures in Machine Learning

Mastering SQL in 2020: The Top 20 Articles You Need to Read

Choosing the Best SQL Articles of 2020

Structured Query Language (SQL) is an essential tool for analyzing and managing complex datasets. With the explosion of data-driven businesses and the need for data analysis skills, SQL has become one of the most rapidly growing and in-demand tech skills.

Whether you are a marketer, analyst, or data scientist, having a solid understanding of SQL is paramount. In this article, we will be exploring the top 20 SQL articles of 2020, covering a range of topics from advanced SQL interview questions to COVID-19 data analysis, and much more.

So, let’s dive in and explore the world of SQL!

Data Analysis: Exploring Advanced SQL Interview Questions

If you are seeking a career as an SQL developer, then you need to be prepared to answer some challenging interview questions. In our first article, we explore some of the most frequently asked advanced SQL interview questions.

We will cover questions on stored procedures, triggers, transactions, and much more. In addition, we will offer key strategies for acing your SQL interview and impressing your potential employers.

COVID-19 Data Analysis: Analyzing Time Series Data with SQL Window Functions

The COVID-19 pandemic has highlighted the critical role data analysis plays in understanding complex events. In our second article, we explore how to analyze time series COVID-19 data using SQL window functions.

We will walk you through the key concepts of time series data and how to use window functions to analyze trends and patterns in COVID-19 data. SQL Courses: Finding the Best SQL Courses for Marketers

Businesses are using data at an unprecedented rate to drive growth and attain a competitive edge.

As a marketer, your job increasingly requires you to understand data trends and create insights from data. In our third article, we explore different SQL courses that are tailored for marketers.

We will provide an in-depth review of each course and highlight their key features and benefits. GROUP BY vs.

PARTITION BY: Understanding the Difference for SQL Reports

Producing useful reports from complex datasets is an essential skill for any business to thrive. In our fourth article, we delve into the difference between GROUP BY and PARTITION BY in SQL reports.

We will explore the situations where you might use each and the benefits of using either function. We will also look at practical examples of how to use these functions to create insightful reports.

TRUNCATE TABLE vs. DELETE vs.

DROP TABLE: Removing Tables and Data in SQL

In SQL, managing tables and data is paramount for any data-driven business. Understanding the difference between TRUNCATE, DELETE, and DROP is essential, so in our fifth article, we will explore the ins and outs of these functions.

We will explain when and how to use each function, as well as the implications of using each function. Row Calculation: How to Calculate the Difference Between Two Rows in SQL

Calculating the difference between two rows in a dataset is an essential skill for any data analyst.

In our sixth article, we will explore how to calculate row differences using SQL window functions. We will provide step-by-step instructions on how to use these functions, alongside practical examples, to help contextualize this skill.

Data Filtering: Understanding the Difference Between the WHERE and HAVING Clauses

In SQL, filtering data is an essential skill. Understanding the nuances between the WHERE and HAVING clauses can be challenging, especially for beginners.

In our seventh article, we will explore the key differences between these two clauses and the practical uses for each. Grouping Data: How to Group Data by Week

Grouping data in SQL is an essential skill for producing meaningful insights.

In our eighth article, we explore how to group data by week in SQL server. We will provide a step-by-step guide to creating weekly summaries of data, helping you to create insightful visualizations and reports.

SQL Join: How to Join 3 Tables (or More) in SQL

Joining multiple tables in SQL is essential for managing complex datasets. In our ninth article, we explore the ins and outs of SQL join.

We will provide practical examples and step-by-step instructions on how to join three tables or more. LEFT JOIN: How to LEFT JOIN Multiple Tables in SQL

In addition to SQL join, LEFT JOIN is another essential skill for managing multiple tables in SQL.

In our tenth article, we will provide an in-depth review of LEFT JOIN, including practical examples and step-by-step instructions on how to LEFT JOIN multiple tables. Reporting: How to Start Writing SQL Reports

Producing clear and concise reports is essential for communicating insights from complex datasets.

In our eleventh article, we will explore the elements of a good SQL report and provide practical steps on how to get started with writing SQL reports. Online Learning: How to Study Online Effectively

Online learning is a growing trend in tech education.

However, effective learning requires dedication and discipline. In our twelfth article, we will provide five key strategies for studying online and approaching online learning in a structured and effective manner.

Advantages of Learning SQL: How Will Learning SQL Improve My Daily Work? If you are on the fence about learning SQL, this article is for you.

In our thirteenth article, we explore the benefits of learning SQL, including how it can improve your daily work and help you to stand out as a data-driven professional. Popular Databases: The Most Popular Databases in 2020

Selecting the right database is essential for any data-driven business.

In our fourteenth article, we dive into the most popular databases of 2020, exploring the pros and cons of each and providing practical guidance on choosing the right database for your needs. SQL in Google Sheets: Yes, We Can!

Google Sheets is a powerful tool for data analysis.

In our fifteenth article, we will explore how to use SQL-like queries in Google Sheets to analyze data. We will provide practical examples of SQL-like queries and their applications in Google Sheets.

SQL Podcasts: Listen to These 7 SQL Podcasts in 2020

Podcasts are an excellent way to learn and stay up-to-date with the latest trends in tech. In our sixteenth article, we will explore the top seven SQL podcasts in 2020, providing an in-depth review of each.

SQL Learning Platforms: The Top 7 Platforms with the Best SQL Courses for 2020

Heres another article that explores different SQL learning platforms. In our seventeenth article, we will compare the top seven platforms with the best SQL courses for 2020, including Udemy, Coursera, and LinkedIn Learning.

Course Comparison: Top 3 Platforms to Learn SQL Online

In addition to ranking the top seven platforms, we will also provide a focused comparison of the top three platforms to learn SQL online in our eighteenth article. Well provide a side-by-side comparison of each platforms features, benefits, and drawbacks.

Online Practice: Learning SQL? 12 Ways to Practice SQL Online

Learning is only effective when it is coupled with practice.

In our nineteenth article, we provide 12 ways to practice SQL online, including tips on creating your own projects and how to find and join SQL challenges and competitions. Programming Languages: What Programming Language Should You Learn?

Finally, in our twentieth article, we will explore the world of programming languages and provide guidance on choosing the right language for your career. We will provide an overview of the most commonly used languages, as well as the pros and cons of each.

Conclusion

As the world moves towards a data-driven future, SQL has become an essential skill for professionals in various domains. The top 20 SQL articles of 2020 highlighted in this article cover a wide range of topics, from advanced interview questions to online learning strategies.

By exploring these articles, you will develop the knowledge and skills needed to tackle SQL challenges with confidence. In conclusion, the top 20 SQL articles of 2020 discussed in this article provide an excellent resource for anyone seeking to improve their skills in SQL.

The articles cover a wide range of topics, from advanced interview questions to online learning strategies. By exploring these articles, readers can develop the knowledge and skills needed to tackle SQL challenges with confidence and drive business success.

The importance of SQL skills in today’s data-driven landscape cannot be overstated, and the insights provided in these articles offer valuable guidance and advice. By immersing oneself in the world of SQL, anyone can become a skilled data analyst, data scientist, or marketer.

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