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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 Minimum Price By Category

The company needs to find the minimum price of a product from each category in order to organize a marketing campaign. They have assigned you this task!

Just a reminder, we are working with two tables:

product:

category:

Now let's get back to the task!

Task

Your task is to obtain the minimum price for each product category. However, to provide customers with options, you need to retrieve only those categories where there are more than 5 different products. You'll need to join two tables, aggregate the data, and use the HAVING clause.

At the end, sort the result by the category_name in the ascending order.

Note

Pay attention that in the response, you should have 2 columns: category_name and min_price. So don't forget to set aliases for these columns!

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Section 3. Chapter 3
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bookGet Minimum Price By Category

The company needs to find the minimum price of a product from each category in order to organize a marketing campaign. They have assigned you this task!

Just a reminder, we are working with two tables:

product:

category:

Now let's get back to the task!

Task

Your task is to obtain the minimum price for each product category. However, to provide customers with options, you need to retrieve only those categories where there are more than 5 different products. You'll need to join two tables, aggregate the data, and use the HAVING clause.

At the end, sort the result by the category_name in the ascending order.

Note

Pay attention that in the response, you should have 2 columns: category_name and min_price. So don't forget to set aliases for these columns!

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 3
toggle bottom row

bookGet Minimum Price By Category

The company needs to find the minimum price of a product from each category in order to organize a marketing campaign. They have assigned you this task!

Just a reminder, we are working with two tables:

product:

category:

Now let's get back to the task!

Task

Your task is to obtain the minimum price for each product category. However, to provide customers with options, you need to retrieve only those categories where there are more than 5 different products. You'll need to join two tables, aggregate the data, and use the HAVING clause.

At the end, sort the result by the category_name in the ascending order.

Note

Pay attention that in the response, you should have 2 columns: category_name and min_price. So don't forget to set aliases for these columns!

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!

The company needs to find the minimum price of a product from each category in order to organize a marketing campaign. They have assigned you this task!

Just a reminder, we are working with two tables:

product:

category:

Now let's get back to the task!

Task

Your task is to obtain the minimum price for each product category. However, to provide customers with options, you need to retrieve only those categories where there are more than 5 different products. You'll need to join two tables, aggregate the data, and use the HAVING clause.

At the end, sort the result by the category_name in the ascending order.

Note

Pay attention that in the response, you should have 2 columns: category_name and min_price. So don't forget to set aliases for these columns!

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