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Jason Browning, Ph.D.

In this course, you'll learn how to use PostgreSQL to author queries that retrieve information from databases. Using SQL, you'll learn how to select the data you need, filter that data, and gather data from various tables.

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In this course, you'll learn how to use PostgreSQL to author queries that retrieve information from databases. Using SQL, you'll learn how to select the data you need, filter that data, and gather data from various tables.

While each organization will have its own database preference, data analysts will benefit from knowing the basics of querying data from PostgreSQL, a popular open-source database platform. In this course, Querying Data from PostgreSQL, you will get a comprehensive introduction of how to query data using PostgreSQL and its pgAdmin tool. First, you will learn the basic structure of a relational database. Next, you will discover how to select data from tables, apply criteria and filters to limit your results, and enhance these skills by retrieving data from multiple tables. Finally, you will explore basic aggregation functions and be exposed to ANSI-compliant SQL. When you're finished with this course, you will have the skills and knowledge of PostgreSQL necessary to easily retrieve data from relational databases.

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What's inside

Syllabus

Course Overview
Understanding the Relational Model
SELECTing Your Data
Limiting Your Results
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Joining for Further Insight
Presenting and Aggregating Your Results
Summary

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Teaches foundational database querying skills with SQL
Provides a structured approach to understanding relational databases
Covers basic aggregation functions for data summarization
Introduces ANSI-compliant SQL, enhancing portability and compatibility
Requires familiarity with basic database concepts and SQL syntax
Does not delve into advanced database concepts or complex query optimization

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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 Querying Data from PostgreSQL with these activities:
Review relational database concepts
Review basic relational database concepts such as tables, rows, columns, and relationships to strengthen your understanding of PostgreSQL.
Show steps
  • Read articles or tutorials on relational database fundamentals.
  • Create a simple database schema and populate it with data.
  • Practice writing basic SQL queries to retrieve data from the database.
Connect with mentors or experts in the field
Seek guidance from experienced individuals to gain insights and practical advice on PostgreSQL and data retrieval techniques.
Show steps
  • Identify potential mentors or experts through online platforms, networking events, or professional connections.
  • Reach out to them and express your interest in learning from their expertise.
  • Schedule regular meetings or virtual sessions to discuss concepts, ask questions, and receive feedback.
Complete online tutorials on PostgreSQL basics
Follow guided tutorials to learn the basics of PostgreSQL, including data types, operators, and functions.
Show steps
  • Identify online tutorials that cover PostgreSQL basics.
  • Go through the tutorials step-by-step and practice the concepts.
  • Complete the exercises and quizzes provided in the tutorials to test your understanding.
11 other activities
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Read 'SQL Queries for Mere Mortals'
Gain a comprehensive understanding of SQL queries and data retrieval techniques from a beginner-friendly book.
Show steps
  • Obtain a copy of the book 'SQL Queries for Mere Mortals'.
  • Read the book thoroughly, taking notes and highlighting important concepts.
  • Complete the exercises and examples provided in the book to reinforce your learning.
PostgreSQL Tutorial from PGAdmin
Provides a basic introduction to SQL and PostgreSQL using a popular open-source tool.
Show steps
  • Install PGAdmin on your computer
  • Create a new PostgreSQL database
  • Connect to the database using PGAdmin
  • Execute basic SQL queries
Querying Drills
Enhance your proficiency in writing SQL queries by completing a set of practice exercises.
Browse courses on SQL Queries
Show steps
  • Access online resources or purchase a practice book with SQL exercises.
  • Dedicate time each week to solving a few practice queries.
  • Review your solutions against the provided answer key.
SQL Practice Problems
Helps reinforce understanding of SQL syntax and data retrieval techniques.
Browse courses on SQL
Show steps
  • Set up a PostgreSQL environment
  • Create a sample database
  • Practice writing SQL queries
  • Review and debug query results
Write SQL queries to retrieve data from sample databases
Practice writing SQL queries against sample databases to reinforce your understanding of data retrieval and manipulation.
Show steps
  • Download sample databases that contain various data sets.
  • Write SQL queries to answer specific questions or extract specific data from the sample databases.
  • Check your query results against the expected output to assess your accuracy.
  • If possible, collaborate with peers or instructors to discuss your queries and learn from others' approaches.
Join a study group or online forum for PostgreSQL
Engage with fellow learners or experts in the field to discuss concepts, ask questions, and share knowledge.
Show steps
  • Identify an online forum or study group dedicated to PostgreSQL.
  • Participate in discussions, ask questions, and share your own experiences.
  • Collaborate with other members to solve problems and deepen your understanding.
Join a PostgreSQL Study Group
Provides a platform for students to collaborate, share knowledge, and reinforce learning.
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  • Find a study group or create your own
  • Meet regularly to discuss course topics
  • Work together on practice problems
  • Share resources and tips
Multi-table Queries
Reinforce your understanding of JOINs and how to use them to retrieve data from multiple tables in PostgreSQL.
Browse courses on SQL Joins
Show steps
  • Review the provided documentation on JOINs in PostgreSQL.
  • Practice writing JOIN queries using the pgAdmin tool.
  • Work through a series of guided tutorials on multi-table queries.
Build a PostgreSQL Data Visualization
Enhances data analysis skills by requiring students to present data in a visually appealing format.
Browse courses on Data Visualization
Show steps
  • Gather data from a PostgreSQL database
  • Choose a visualization tool
  • Create a data visualization
  • Interpret and present the results
Create a data visualization using SQL and a visualization tool
Combine your SQL skills with a visualization tool to create a data visualization that represents the data you retrieved from PostgreSQL.
Show steps
  • Choose a data visualization tool that supports data import from PostgreSQL.
  • Connect the visualization tool to your PostgreSQL database.
  • Write SQL queries to extract the relevant data from the database.
  • Import the data into the visualization tool and create a visual representation of the data.
Data Aggregation Presentation
Cement your understanding of data aggregation functions and their applications by creating a presentation that showcases your knowledge.
Browse courses on Data Aggregation
Show steps
  • Identify a real-world dataset and formulate a research question.
  • Use PostgreSQL SQL to extract the necessary data and perform aggregation operations.
  • Create visualizations or charts to represent the aggregated data.
  • Develop a presentation that explains your findings and insights.

Career center

Learners who complete Querying Data from PostgreSQL will develop knowledge and skills that may be useful to these careers:
Database Developer
Database Developers design and develop databases. Proficiency in SQL and relational databases, including PostgreSQL, is essential for this role. This course will provide you with a comprehensive introduction to querying data using PostgreSQL, helping you to enhance your skills as a Database Developer.
Database Administrator
Database Administrators ensure the integrity and performance of databases. Familiarity with PostgreSQL, a popular open-source database platform, and its pgAdmin tool, is essential for this role. This course will provide you with a comprehensive introduction to querying data using PostgreSQL, helping you to enhance your skills as a Database Administrator.
Data Architect
Data Architects design and manage data architectures. Proficiency in SQL and relational databases, including PostgreSQL, is essential for this role. This course will provide you with a comprehensive introduction to querying data using PostgreSQL, helping you to enhance your skills as a Data Architect.
Data Engineer
Data Engineers build and maintain data pipelines to ensure data is available for analysis. Knowledge of SQL and relational databases, including PostgreSQL, is essential for this role. This course will provide you with a comprehensive introduction to querying data using PostgreSQL, helping you to enhance your skills as a Data Engineer.
Data Analyst
Data Analysts help organizations answer complex questions about their data by utilizing SQL to explore, clean, analyze and visualize data. Knowledge of PostgreSQL, a popular open-source database platform, and its pgAdmin tool, is a valuable skill for Data Analysts. This course will help you build a foundation in PostgreSQL, providing you with the skills necessary to efficiently retrieve data from relational databases.
Business Analyst
Business Analysts help businesses understand their data to make better decisions. Knowledge of SQL and relational databases, including PostgreSQL, can be valuable in this role. This course will help you build a foundation in querying data from PostgreSQL, providing you with the skills necessary to efficiently retrieve and analyze data for business insights.
Software Engineer
Software Engineers design, develop, and maintain software systems. While proficiency in various programming languages is a core requirement, understanding relational databases and SQL is also important. This course will help you build a foundation in querying data from PostgreSQL, a popular open-source database platform, which may be useful in your role as a Software Engineer.
Data Scientist
Data Scientists use scientific methods and algorithms to extract insights from data. While proficiency in programming languages and statistics is essential, understanding relational databases and SQL is also important. This course may be useful in providing you with a foundation in querying data from PostgreSQL, a popular open-source database platform.
Systems Analyst
Systems Analysts design and implement computer systems. While proficiency in programming languages and systems analysis techniques is essential, understanding relational databases and SQL is also important. This course will help you build a foundation in querying data from PostgreSQL, a popular open-source database platform, which may be useful in your role as a Systems Analyst.
Statistician
Statisticians collect, analyze, and interpret data. While proficiency in statistics and data analysis techniques is essential, understanding relational databases and SQL is also important. This course will help you build a foundation in querying data from PostgreSQL, a popular open-source database platform, which may be useful in your role as a Statistician.
Machine Learning Engineer
Machine Learning Engineers build and deploy machine learning models. While proficiency in machine learning algorithms and programming languages is essential, understanding relational databases and SQL can also be valuable. This course may be useful in providing you with a foundation in querying data from PostgreSQL, a popular open-source database platform.
Information Architect
Information Architects design and manage information systems. Understanding relational databases and SQL, including PostgreSQL, can be valuable in understanding data structures and relationships. This course may be useful in providing you with a foundation in querying data from PostgreSQL, a popular open-source database platform.
Information Security Analyst
Information Security Analysts protect organizations from cyber threats. While knowledge of cybersecurity principles and tools is essential, understanding relational databases and SQL can also be valuable. This course may be useful in providing you with a foundation in querying data from PostgreSQL, a popular open-source database platform.
Software Tester
Software Testers ensure that software meets requirements and specifications. Understanding SQL and relational databases, including PostgreSQL, can be advantageous in testing database-driven applications. This course may be useful in providing you with a foundation in querying data from PostgreSQL, a popular open-source database platform.
Network Administrator
Network Administrators maintain and troubleshoot computer networks. While proficiency in networking technologies is essential, understanding relational databases and SQL can also be valuable. This course may be useful in providing you with a foundation in querying data from PostgreSQL, a popular open-source database platform.

Reading list

We've selected nine books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Querying Data from PostgreSQL.
This comprehensive guide to PostgreSQL covers everything from installation and configuration to advanced topics like replication and performance tuning. It's a great resource for anyone who wants to learn more about PostgreSQL or use it in a production environment.
This practical guide to PostgreSQL covers everything from installation and configuration to advanced topics like replication and performance tuning. It's a great resource for anyone who wants to learn more about PostgreSQL or use it in a production environment.
This classic textbook on database systems provides a comprehensive overview of the field. It covers everything from data models to query optimization, and it's a great resource for anyone who wants to learn more about the foundations of databases.
Provides a rigorous introduction to SQL and relational theory. It's a great resource for anyone who wants to learn more about the foundations of SQL and how to write accurate and efficient queries.
This comprehensive guide to PostgreSQL replication covers everything from setting up a replication cluster to monitoring and managing replication. It's a great resource for anyone who wants to learn more about PostgreSQL replication or use it in a production environment.
This concise reference guide for SQL commands and syntax handy tool to have on hand when working with PostgreSQL. It covers the basics of data retrieval, manipulation, and aggregation, as well as more advanced topics like subqueries and joins.
A concise reference guide for SQL commands and syntax, this book handy tool to have on hand when working with PostgreSQL. It covers the basics of data retrieval, manipulation, and aggregation, as well as more advanced topics like subqueries and joins.
This practical guide to PostgreSQL performance tuning covers everything from hardware and software configuration to query optimization. It's a great resource for anyone who wants to learn more about PostgreSQL performance or improve the performance of their PostgreSQL database.
This hands-on guide to SQL queries great resource for anyone who wants to learn more about SQL or improve their skills. It covers everything from basic select statements to more advanced topics like subqueries and joins.

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