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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

bookGet Category By Product Price

Great, we have obtained the quantity of products in each category. Now we need to retrieve the categories where the products cost more than a certain amount of money.

Just a reminder that we are working with two tables.

product:

category:

And now, let's move to the task:

Task
test

Swipe to show code editor

Your task is to retrieve the unique category names that have products with a price higher than 450. Use the WHERE clause for this, where you compare 450 with the value of the price column.

Note

Please note that there should be only one column in the output - category.name. You do not include the price column in the SELECT section; you only use it in the WHERE section.

Good luck!

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Section 3. Chapter 2
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bookGet Category By Product Price

Great, we have obtained the quantity of products in each category. Now we need to retrieve the categories where the products cost more than a certain amount of money.

Just a reminder that we are working with two tables.

product:

category:

And now, let's move to the task:

Task
test

Swipe to show code editor

Your task is to retrieve the unique category names that have products with a price higher than 450. Use the WHERE clause for this, where you compare 450 with the value of the price column.

Note

Please note that there should be only one column in the output - category.name. You do not include the price column in the SELECT section; you only use it in the WHERE section.

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 2
toggle bottom row

bookGet Category By Product Price

Great, we have obtained the quantity of products in each category. Now we need to retrieve the categories where the products cost more than a certain amount of money.

Just a reminder that we are working with two tables.

product:

category:

And now, let's move to the task:

Task
test

Swipe to show code editor

Your task is to retrieve the unique category names that have products with a price higher than 450. Use the WHERE clause for this, where you compare 450 with the value of the price column.

Note

Please note that there should be only one column in the output - category.name. You do not include the price column in the SELECT section; you only use it in the WHERE section.

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!

Great, we have obtained the quantity of products in each category. Now we need to retrieve the categories where the products cost more than a certain amount of money.

Just a reminder that we are working with two tables.

product:

category:

And now, let's move to the task:

Task
test

Swipe to show code editor

Your task is to retrieve the unique category names that have products with a price higher than 450. Use the WHERE clause for this, where you compare 450 with the value of the price column.

Note

Please note that there should be only one column in the output - category.name. You do not include the price column in the SELECT section; you only use it in the WHERE section.

Good luck!

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