SQL CASE Statements from Coursera

Welcome to this project-based course, SQL CASE Statements. In this project, you will learn how to use SQL CASE statements to query tables in a database.

By the end of this 2-hour long project, you will be able to write simple CASE statements to retrieve the desired result from a database. Then, we will move systematically to write more complex SQL CASE statements. Furthermore, we will see how to use the CASE clause together with aggregate functions, and SQL joins to get the desired result you want from tables in a database. Also, you will learn how to use the CASE clause to transpose the result of a query.

Also, for this hands-on project, we will use PostgreSQL as our preferred database management system (DBMS). Therefore, to complete this project, it is required that you have prior experience with using PostgreSQL. Similarly, this project is an advanced SQL concept; so, a good foundation for writing SQL queries, and performing joins in SQL is vital to complete this project.

If you are not familiar with writing queries in SQL and SQL joins and want to learn these concepts, start with my previous guided projects titled “Querying Databases using SQL SELECT statement", “Performing Data Aggregation using SQL Aggregate Functions” and “Mastering SQL Joins”. I taught these guided projects using PostgreSQL. So, taking these projects will give the needed requisite to complete this project on SQL CASE Statements. However, if you are comfortable writing queries in PostgreSQL, please join me on this wonderful ride! Let’s get our hands dirty!

What's inside

Syllabus

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Explores SQL CASE statements, which are standard in querying databases

Develops knowledge and skills in using SQL CASE statements to query tables in a database

Taught by Arimoro Olayinka Imisioluwa, an expert in SQL and database management

Uses PostgreSQL, the preferred database management system for this project

Provides a hands-on approach to learning through practical exercises

May require prior experience with PostgreSQL and SQL concepts for better understanding

Reviews summary

Practical sql case statements guide

According to learners, this course provides a clear and practical guide to SQL CASE statements, specifically within a PostgreSQL environment. Students highlight the well-structured content and the instructor's ability to simplify complex concepts, including transposing data and advanced use with aggregate functions and joins. The hands-on project approach is a particular strength, offering effective practice. While largely positive, some note the fast pace and emphasize that prior SQL and PostgreSQL experience is essential, making it ideal for those seeking to enhance existing database skills.

A focused project; some desired more in-depth coverage.

"A concise and practical guide to SQL CASE."

"It's short, but covers the essentials well."

"My only minor gripe is that some parts felt a bit rushed, but overall, it's a solid project for a quick refresh."

"I was hoping for more depth. While it introduced the concepts, I felt it didn't delve into performance considerations..."

Covers CASE with aggregates, joins, and data transposition effectively.

"I finally understood how to transpose data using CASE statements effectively."

"The examples were very helpful, especially the ones combining CASE with aggregate functions."

"I particularly enjoyed the section on using CASE for conditional aggregation."

"The transposition part was a revelation for me."

Project-based approach provides valuable practical experience.

"The hands-on practice in PostgreSQL was exactly what I needed to solidify my knowledge."

"The labs were perfectly aligned with the explanations."

"The project-based approach is effective."

Instructor effectively clarifies complex SQL CASE concepts.

"This project is incredibly well-structured and the instructor explains complex concepts with great clarity."

"The instructor made potentially confusing topics very straightforward."

"I finally understood how to transpose data using CASE statements effectively."

Assumes strong foundation in SQL queries and PostgreSQL usage.

"Prerequisites are definitely important here, don't skip them."

"it assumes a lot of prior knowledge which was stated, but perhaps underestimated how much."

"If you are comfortable writing queries in PostgreSQL, please join me on this wonderful ride!"

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in SQL CASE Statements with these activities:

Review SQL basics

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Review the fundamental concepts of SQL, including data types, operators, and basic queries, to strengthen your foundation before starting the course.

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Refer to online tutorials or documentation on SQL basics
Practice writing simple SQL queries using an online SQL editor or a database management tool

Solve SQL CASE statement exercises

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Practice writing SQL CASE statements by solving exercises to reinforce your understanding and improve your skills.

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Find online resources or textbooks with SQL CASE statement exercises.
Attempt to solve the exercises on your own.
Review solutions or ask for help when needed.

Read 'SQL Cookbook' by Anthony Molinaro

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Expand your knowledge of SQL CASE statements by reading a book that provides practical recipes and examples.

View SQL Cookbook: Query Solutions and Techniques... on Amazon

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Obtain a copy of 'SQL Cookbook' by Anthony Molinaro.
Read the chapters relevant to SQL CASE statements.
Try out the recipes and examples provided in the book.

Three other activities

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Write blog posts or articles on SQL CASE statements

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Solidify your understanding of SQL CASE statements by creating blog posts or articles that explain the concepts and provide examples.

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Choose a specific topic related to SQL CASE statements.
Research and gather information on the topic.
Write a blog post or article that explains the topic clearly and provides code examples.

Mentor junior developers or students on SQL CASE statements

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Deepen your understanding of SQL CASE statements by mentoring others and helping them grasp the concepts.

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Identify opportunities to mentor junior developers or students on SQL CASE statements.
Prepare materials and resources to support your mentees.
Provide guidance, answer questions, and offer support to your mentees.

Contribute to open-source projects that utilize SQL CASE statements

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Gain practical experience with SQL CASE statements by contributing to open-source projects that utilize them.

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Identify open-source projects that use SQL CASE statements.
Review the project documentation and codebase to understand how SQL CASE statements are used.
Make contributions to the project, such as fixing bugs, adding features, or improving documentation.

Career center

Learners who complete SQL CASE Statements will develop knowledge and skills that may be useful to these careers:

Database Administrator

Database Administrators are responsible for the installation, configuration, maintenance, and repair of database management systems. They work with database designers and other IT professionals to ensure that databases are operating efficiently and securely. This course can help Database Administrators by providing them with a strong foundation in SQL CASE Statements, which are essential for querying and managing data in relational databases. Additionally, this course can help Database Administrators learn how to use CASE Statements to transpose the result of a query, which can be useful for creating reports and other data summaries.

See salaries and explore the career path for Database Administrator

Data Analyst

Data Analysts are responsible for collecting, analyzing, and interpreting data to identify trends and patterns. They use this information to help businesses make better decisions. This course can help Data Analysts by providing them with a strong foundation in SQL CASE Statements, which are essential for querying and managing data in relational databases. Additionally, this course can help Data Analysts learn how to use CASE Statements to aggregate data, which can be useful for creating reports and other data summaries.

See salaries and explore the career path for Data Analyst

Business Intelligence Analyst

Business Intelligence Analysts are responsible for helping businesses understand their data and make better decisions. They use a variety of tools and techniques to analyze data, including SQL CASE Statements. This course can help Business Intelligence Analysts by providing them with a strong foundation in SQL CASE Statements, which are essential for querying and managing data in relational databases. Additionally, this course can help Business Intelligence Analysts learn how to use CASE Statements to aggregate data, which can be useful for creating reports and other data summaries.

See salaries and explore the career path for Business Intelligence Analyst

Data Scientist

Data Scientists are responsible for developing and implementing data-driven solutions to business problems. They use a variety of tools and techniques to analyze data, including SQL CASE Statements. This course can help Data Scientists by providing them with a strong foundation in SQL CASE Statements, which are essential for querying and managing data in relational databases. Additionally, this course can help Data Scientists learn how to use CASE Statements to aggregate data, which can be useful for creating reports and other data summaries.

See salaries and explore the career path for Data Scientist

Software Engineer

Software Engineers are responsible for designing, developing, and maintaining software applications. They use a variety of programming languages and tools to create software that meets the needs of users. This course can help Software Engineers by providing them with a strong foundation in SQL CASE Statements, which are essential for querying and managing data in relational databases. Additionally, this course can help Software Engineers learn how to use CASE Statements to aggregate data, which can be useful for creating reports and other data summaries.

See salaries and explore the career path for Software Engineer

Web Developer

Web Developers are responsible for designing and developing websites. They use a variety of programming languages and tools to create websites that are both visually appealing and functional. This course can help Web Developers by providing them with a strong foundation in SQL CASE Statements, which are essential for querying and managing data in relational databases. Additionally, this course can help Web Developers learn how to use CASE Statements to aggregate data, which can be useful for creating reports and other data summaries.

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Data Engineer

Data Engineers are responsible for designing and building data pipelines that move data from one system to another. They use a variety of tools and technologies to ensure that data is accurate, consistent, and timely. This course can help Data Engineers by providing them with a strong foundation in SQL CASE Statements, which are essential for querying and managing data in relational databases. Additionally, this course can help Data Engineers learn how to use CASE Statements to aggregate data, which can be useful for creating reports and other data summaries.

See salaries and explore the career path for Data Engineer

Database Developer

Database Developers are responsible for designing and developing database systems. They use a variety of tools and technologies to create databases that are both efficient and scalable. This course can help Database Developers by providing them with a strong foundation in SQL CASE Statements, which are essential for querying and managing data in relational databases. Additionally, this course can help Database Developers learn how to use CASE Statements to aggregate data, which can be useful for creating reports and other data summaries.

See salaries and explore the career path for Database Developer

Information Architect

Information Architects are responsible for designing and organizing the structure and content of websites and other digital products. They use a variety of tools and techniques to ensure that information is easy to find and understand. This course can help Information Architects by providing them with a strong foundation in SQL CASE Statements, which are essential for querying and managing data in relational databases. Additionally, this course can help Information Architects learn how to use CASE Statements to aggregate data, which can be useful for creating reports and other data summaries.

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UX Designer

UX Designers are responsible for designing the user experience of websites and other digital products. They use a variety of tools and techniques to ensure that products are easy to use and enjoyable. This course may be helpful for UX Designers by providing them with a basic understanding of SQL CASE Statements, which are essential for querying and managing data in relational databases. However, this course is not specifically designed for UX Designers and may not cover all of the skills and knowledge that they need to be successful.

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Product Manager

Product Managers are responsible for managing the development and launch of new products. They work with a variety of stakeholders, including engineers, designers, and marketers, to ensure that products meet the needs of users. This course may be helpful for Product Managers by providing them with a basic understanding of SQL CASE Statements, which are essential for querying and managing data in relational databases. However, this course is not specifically designed for Product Managers and may not cover all of the skills and knowledge that they need to be successful.

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Marketing Manager

Marketing Managers are responsible for developing and executing marketing campaigns. They work with a variety of stakeholders, including sales teams, product development teams, and public relations teams, to ensure that marketing campaigns are successful. This course may be helpful for Marketing Managers by providing them with a basic understanding of SQL CASE Statements, which are essential for querying and managing data in relational databases. However, this course is not specifically designed for Marketing Managers and may not cover all of the skills and knowledge that they need to be successful.

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Sales Manager

Sales Managers are responsible for managing sales teams and developing sales strategies. They work with a variety of stakeholders, including customers, sales representatives, and product development teams, to ensure that sales targets are met. This course may be helpful for Sales Managers by providing them with a basic understanding of SQL CASE Statements, which are essential for querying and managing data in relational databases. However, this course is not specifically designed for Sales Managers and may not cover all of the skills and knowledge that they need to be successful.

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Customer Success Manager

Customer Success Managers are responsible for ensuring that customers are satisfied with their products and services. They work with a variety of stakeholders, including customers, sales teams, and product development teams, to ensure that customers have a positive experience. This course may be helpful for Customer Success Managers by providing them with a basic understanding of SQL CASE Statements, which are essential for querying and managing data in relational databases. However, this course is not specifically designed for Customer Success Managers and may not cover all of the skills and knowledge that they need to be successful.

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Account Manager

Account Managers are responsible for managing relationships with customers. They work with a variety of stakeholders, including customers, sales teams, and product development teams, to ensure that customers are satisfied with their products and services. This course may be helpful for Account Managers by providing them with a basic understanding of SQL CASE Statements, which are essential for querying and managing data in relational databases. However, this course is not specifically designed for Account Managers and may not cover all of the skills and knowledge that they need to be successful.

See salaries and explore the career path for Account Manager