SQL Crash Course : PostgreSQL for Beginners

SQL course covering important topics of Business Intelligence for SQL Database ( PostgreSQL ) for Beginners

4.23 (636 reviews)

SQL Crash Course : PostgreSQL for Beginners



1.5 hours


Jan 2021

Last Update
Regular Price

What you will learn

Knowledge of all the basic SQL commands

Become proficient in SQL queries like SELECT, CREATE and ALTER

Solid understanding of SQL




Why learn SQL?

  1. SQL is the most universal and common used database language.It powers the most commonly used database engines like PostgreSQL, SQL Server, SQLite, and MySQL. Simply put,If you want to access databases then yes, you need to know SQL.

  2. It is not really difficult to learn SQL. SQL is not a programming language, it’s a query language. The primary objective where SQL was created was to give the possibility to common people get interested data from database. It is also an English like language so anyone who can use English at a basic level can write SQL query easily.

  3. SQL is one of the most sought-after skills by hiring employers.

  4. You can earn good money

How much time does it take to learn SQL?

SQL is easy but no one can determine the learning time it takes. It totally depends on you. The method we adopted to help you learn SQL quickly starts from the basics and takes you to advanced level within hours. You can follow the same, but remember you can learn nothing without practicing it. Practice is the only way to learn SQL quickly.

What are the steps I should follow to learn SQL?

  1. Start learning from the basics of SQL. The first 10 sections of the course cover the basics.

  2. Once done with the basic try your hands on advanced SQL. Next 10 sections cover Advanced topics

  3. Next few sections will cover help you with interviews and Vivas.

  4. Practice your learning on the exercise provided in every section.

What's the difference between SQL and PostgreSQL?

SQL is a language. Specifically, the "Structured Query Language"

PostgreSQL is one of several database systems, or RDMS (Relational Database Management System). PostgresSQL is one of several RDMS's, others of which are Oracle, Informix, MySQL, and MSQL.

All of these RDMSs use SQL as their language. Each of them have minor variations in the "dialect" of SQL that they use, but it's all still SQL.

Which is better, PostgreSQL or MySQL?

Both are excellent products with unique strengths, and the choice is often a matter of personal preference.

PostgreSQL offers overall features for traditional database applications, while MySQL focuses on faster performance for Web-based applications.

Open source development will bring more features to subsequent releases of both databases.

Who uses these databases?

Here are a few examples of companies that use PostgreSQL: Apple, BioPharm, Etsy, IMDB, Macworld, Debian, Fujitsu, Red Hat, Sun Microsystem, Cisco, Skype.

What's special about this course?

The course is created on the basis of three pillars of learning:

  1. Know (Study)

  2. Do (Practice)

  3. Review (Self feedback)


We have created a set of concise and comprehensive videos to teach you all the SQL related skills you will need in your professional career.


We also provide Exercises to complement the learning from the lecture video. These exercises are carefully designed to further clarify the concepts and help you with implementing the concepts on practical problems faced on-the-job.


Check if you have learnt the concepts by executing your code and analyzing the result set. Ask questions in the discussion board if you face any difficulty.

Bonus Lectures

Apart from this, their is a bonus section which covers important topics from the view of job interviews and Vivas.

The Authors of this course have several years of corporate experience and hence have curated the course material keeping in mind the requirement of SQL in today's corporate world.





Course Resources


Fundamental SQL statements



Import data from File (COPY)

SELECT statement



Logical Operators




Bonus Section

Excel Basic Tutorial

Bonus Lecture


Marlon3 October 2020

Curso bem completo, abordando desde a parte teórica até exemplos na prática. Bom para iniciantes como também para quem pretende rever o conteúdo.

NARENDRA2 July 2020

The Guide explained concepts very clearly and he has very good grip over sql. Overall the time spent on this course will be useful for me in my professional carrier. Thank you udemy

Doug24 June 2020

Good, quick, free intro to Postgres. Would have given 5 stars if the instructor had emphasized code readability and used clean code in his examples.

Mário17 June 2020

He said he'd continue some topics in "the next video", but there are no videos covering these future topics he mentioned.

Siddhartha3 June 2020

For a beginner like me it was easy to understand. I believe it fulfilled the purpose for me whether I want to learn SQL or not. I need to practice on my own to understand the course better and get expertise.

Leonardo28 April 2020

Doing very well until now, good training path and knowledge...as the course move forward I may give it five starts...seems to be going that way.

Raghu21 April 2020

Sound not working in desktop version. Error occurred while trying to copy from text file: ERROR: invalid input syntax for type integer: "cust_id" CONTEXT: COPY customer_table, line 1, column cust_id: "cust_id" SQL state: 22P02 The last alter statement not explained.

Sagar6 April 2020

I think it is a good start for beginners to understand the basics and also the content is really good.

Mpho2 April 2020

Well this was impressive, coming from a different flavor of SQL I must say that command are more or less the same, however i didn't have a clue as to how postgresSQL works. Now i am confident that i can execute any given task. thank you

Osmair12 March 2020

Great course for beginners, could be better if 'foreign key' part was included; anyway thanks a lot to the creator for such a nice free material. ;)

Patera4 February 2020

It covers all the basic commands and how to start using PostgreSQL. I found that the installation and start-up steps are what always confuses me. But this course helped me to learn how to do it right away.

Yoelys17 December 2019

Aprendo SQL una herramienta para base de datos tanto para programadores como personas que trabajan con datos y necesitan el conocimiento o aprendizaje de los mismos.

Luis11 November 2019

It was awesome, I thought maybe we could get some episodes on joins and stuff, but for a beginners course, it was short and full of really good stuff

Raymond14 July 2019

A good introduction that was easy to follow with simple examples. Should have included a lesson on using multiple tables to make it more complete. Not really for advanced users as noted in description.


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