20 Queries - SUBQUERIES
4.0 (16 ratings)
Instead of using a simple lifetime average, Udemy calculates a course's star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.
136 students enrolled
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20 Queries - SUBQUERIES

Master subqueries through our set of 20 practice challenges
4.0 (16 ratings)
Instead of using a simple lifetime average, Udemy calculates a course's star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.
136 students enrolled
Last updated 8/2017
English
Current price: $10 Original price: $100 Discount: 90% off
5 hours left at this price!
30-Day Money-Back Guarantee
Includes:
  • 2 hours on-demand video
  • 1 Article
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
What Will I Learn?
  • Create subqueries that utilize aggregate functions
  • Create derived tables
  • Use multiple subqueries in the SELECT clause
  • Use JOINS and subqueries in the same query
View Curriculum
Requirements
  • No software is required
  • You should have taken our "Learn SQL Fundamentals Through 10 Pratice Problems" course, or have a working knowledge of SQL
  • General knowledge of subqueries
Description

Ready for more SQL practice?

"20 Queries - SUBQUERIES" is the next step in your journey to master SQL.

Our first two courses, "HANDS-ON SQL" and "10 Queries" covered basic SQL statements, with a brief introduction into advanced topics like joins and subqueries. Then we worked on getting you comfortable with complex joins in our "20 Queries - JOINS" course.

Now it's time to do the same with subqueries!

Like in "20 Queries - JOINS", this course is a set of 20 practice challenges, ranging from very simple to advanced-level subqueries. You'll learn how to use subqueries in the SELECT clause, to use them to create derived tables, to use them with aggregates, and much more!

There are two parts to this course - the videos, and the actual hands-on practice. The Udemy course only gets you access to the video overview of each query challenge - to actually try your hand at the query challenges, you need to sign up on our website (this is free, we show you how to do it in the first lecture). Once you finish a challenge (or if you get stuck), check back on the Udemy videos to see how we did it.

This is an intermediate level course for people who already have a basic understanding of how SQL works. Now don't let that scare you away if you are a gung-ho beginner - just know that if that is you, you are going to have to learn quick and be willing to search terms if you don't recognize them.

Who is the target audience?
  • People who have taken our "Learn SQL Fundamentals Through 10 Pratice Problems" course
  • People who want to feel comfortable with making subqueries
  • People who need more practice with SQL problems
  • People looking to get a job that uses SQL
  • People who want to learn SQL to get a raise
  • People who want to learn SQL to get a promotion
Compare to Other Databases Courses
Curriculum For This Course
22 Lectures
02:11:44
+
Introduction
2 Lectures 03:41

How to access the course
00:17
+
Practice Problems
20 Lectures 02:08:02

Challenge #2
02:47

Challenge #3
07:05

Challenge #4
04:06

Challenge #5
06:18

Challenge #6
06:48

Challenge #7
07:13


Challenge #9
10:16

Challenge #10
02:43

Challenge #11
02:03

Challenge #12
04:16

Challenge #13
08:23

Challenge #14
04:43

Challenge #15
11:00

Challenge #16
07:00

Challenge #17
06:23

Challenge #18
08:09

Challenge #19
06:40

Challenge #20
09:41
About the Instructor
Taylor Chiu
4.6 Average rating
308 Reviews
11,089 Students
3 Courses
SQL Database Engineer, Web Designer, Instructor

Hi there, my name is Taylor Chiu of LearnToSQL. Ever feel like you want to know more about coding or other tech stuff, but can't because you aren't good at it, or can't speak the lingo? If so, I've been in your shoes, and I know how to get past that sticking point. I'm more naturally a business and sports guy, but made the transition into my current job of database engineer (where I've been for the last 2 years) because I wanted to expand my horizons. It hasn't been an easy process, but it has been very rewarding.

The thing is, anyone can get good at tech, you just have to be persistent. And it doesn't hurt to have someone who can speak to you in a way you understand, until you're able to understand the ins-and-outs technically. That's what I want to provide for you.

Thomas Fowles
4.6 Average rating
308 Reviews
11,089 Students
3 Courses
Business Intelligence Developer & SQL Educator

Passionate business intelligence developer with 3 years experience solving enterprise data problems. Expert-level proficiency with major database systems such as Microsoft SQL Server, Oracle, and MySQL. Proficient with common database tools such as SAP Data Services, Tableau, and SSIS.

Co-founder or SQL Prep, which aims to educate the workforce and build data literacy within companies.