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Intermediate SQL
course content

Course Content

Intermediate SQL

Intermediate SQL

1. Grouping
GROUP BYOrder of StatementsTotal Ride Time for Each Subway Line ChallengeAverage Student's Grade ChallengeSearching for the Top Math Students ChallengeHAVINGSeveral Aggregate Functions in the QueryMore Complex Filtering
2. Nested Subqueries
Nested QueriesNon-tech Department Employees ChallengeUsing Inner Subqueries in the FROM SectionEmployees With More Than Average Salary ChallengeUNION ClauseCombining Table Results
3. Joining Tables
JOIN 2 TablesGet Category By Product PriceGet Minimum Price By CategoryGet Product Amount By CategoryLEFT, RIGHT and INNER JOINsTable Join PracticeFULL JOIN Usage
4. DDL and DML in SQL
CREATE and ConstraintsALTER and INSERT OperationsDROP and TRUNCATEUPDATE and DELETE

book
FULL JOIN Usage

In this chapter, you will need to use a specific type of table join, unlike the previous two chapters where, in theory, you could use the same type of JOIN.

I will remind you that we are working with two tables:

courses:

enrollments:

Task
test

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Write a query to retrieve a list of all courses and students, including those courses with no registered students and those students who are not registered for any course.

To accomplish this, you will need to use a specific type of join. Also, retrieve the columns in the exact order as specified:

Additionally, sort the result by the course_id column. Good luck!

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Section 3. Chapter 7
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book
FULL JOIN Usage

In this chapter, you will need to use a specific type of table join, unlike the previous two chapters where, in theory, you could use the same type of JOIN.

I will remind you that we are working with two tables:

courses:

enrollments:

Task
test

Swipe to show code editor

Write a query to retrieve a list of all courses and students, including those courses with no registered students and those students who are not registered for any course.

To accomplish this, you will need to use a specific type of join. Also, retrieve the columns in the exact order as specified:

Additionally, sort the result by the course_id column. Good luck!

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 7
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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