Oracle SQL: An Introduction to the most popular database

A quick tour of the six principal clauses of the SELECT statement.
Free tutorial
Rating: 4.3 out of 5 (506 ratings)
17,617 students
1hr 24min of on-demand video
English [Auto]

Either Download and Install Oracle Express Edition and Oracle SQL Developer on your computer - for free
Write your own SELECT statements.
Get an easy way to remember the order of these clauses.
Find out what more you need to know, and resources in how to learn it.


  • No knowledge of Oracle SQL at all is needed.
  • You need to know how to use a computer, including installing programs.
  • This is a free course - you have nothing to lose!
  • Why not have a look at the curriculum below and see what you can learn? If you already know this information, then please see my other courses.


This course is a brief presentation of Oracle SQL.

We will install a version of Oracle Express Edition and Oracle SQL Developer for free.

  • The Oracle Express Edition is the back engine, which does all of the work.

  • Oracle SQL Developer is the front engine, which allows you to send queries and see the results.

We'll then look at the SELECT statement with its 6 main clauses (SELECT, FROM, WHERE, GROUP BY, HAVING and ORDER BY).

  • The SELECT clause says what fields you want to retrieve.

  • The FROM clause shows the data source.

  • The WHERE clause filters it down, based on criteria you choose.

  • The GROUP BY clause aggregates (sums, count, min, max) it together, creating a summary.

  • The HAVING clause can summarise it further.

  • The ORDER BY clause then orders the results.

As part of this, we'll be looking at how you can rename fields in a query, how you can use the AS keyword, and semicolons and comments.

Following this, we'll look at what else you need to know, and resources (which range from FREE to very expensive) which will help you to learn it.

No prior knowledge is required - just a willingness to learn.

See you on the course.

Who this course is for:

  • This beginner's course is for you if you want to learn about Oracle SQL and the six principal clauses of the SELECT statement.
  • If you have already heard about Oracle SQL, and wish to learn more about SQL code, then please have a look at my courses.


Best Selling Instructor - over 750,000 students so far
Phillip Burton
  • 4.6 Instructor Rating
  • 131,141 Reviews
  • 785,374 Students
  • 60 Courses

Hi. I'm Phillip, and I'm proud to Teach with Udemy as a Udemy Instructor Partner. I have been teaching on Udemy since 2015, and I have over 750,000 students and more than 40 video courses, including over a dozen Bestseller courses.

My courses include Power BI, Tableau, SQL Server, Power Platform (Power Apps, Power Automate, etc.), Azure, Microsoft Office, and more. Many of my courses follow requirements for official Microsoft certifications - so with a bit of practice, you could enter the exam and put it on your CV or resume.

I have been a Computing Consultant providing expert services in the development of computer systems and data analysis. I am one of 9 award winning Experts for Experts Exchange's 11th Annual Expert Awards. My interests are working with data, including Microsoft Power BI, Excel, Access, SQL Server, and the Power Platform.

Top companies trust Udemy

Get your team access to Udemy's top 26,000+ courses