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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

bookNon-tech Department Employees Challenge

In this chapter, you will work with the employees and department tables.

Here's how they look:

employees:

department:

Task

Let's move on to practice!

Your task is to retrieve the first name, last name, and salary of those employees who work in non-technical departments. To do this, use an inner query where you write the filtering using a WHERE clause. You also need to sort the results by salary, from highest to lowest. Use the ORDER BY clause to accomplish this subtask.

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Section 2. Chapter 2
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bookNon-tech Department Employees Challenge

In this chapter, you will work with the employees and department tables.

Here's how they look:

employees:

department:

Task

Let's move on to practice!

Your task is to retrieve the first name, last name, and salary of those employees who work in non-technical departments. To do this, use an inner query where you write the filtering using a WHERE clause. You also need to sort the results by salary, from highest to lowest. Use the ORDER BY clause to accomplish this subtask.

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 2. Chapter 2
toggle bottom row

bookNon-tech Department Employees Challenge

In this chapter, you will work with the employees and department tables.

Here's how they look:

employees:

department:

Task

Let's move on to practice!

Your task is to retrieve the first name, last name, and salary of those employees who work in non-technical departments. To do this, use an inner query where you write the filtering using a WHERE clause. You also need to sort the results by salary, from highest to lowest. Use the ORDER BY clause to accomplish this subtask.

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!

In this chapter, you will work with the employees and department tables.

Here's how they look:

employees:

department:

Task

Let's move on to practice!

Your task is to retrieve the first name, last name, and salary of those employees who work in non-technical departments. To do this, use an inner query where you write the filtering using a WHERE clause. You also need to sort the results by salary, from highest to lowest. Use the ORDER BY clause to accomplish this subtask.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 2. Chapter 2
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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