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Please enable JavaScript in your browser settings or update your browser.Challenge: The most expensive transmission + engine size combinations | Practicing
SQL Basics
course content

Course Content

SQL Basics

SQL Basics

1. Selecting
The very first meet with the databaseSELECTing certain columnsLIMITing resultsUnique values from columnUnique values from multiple columnsHow many?How many unique?AliasesTables aliases
2. Filtering
Word filteringNumber filteringCombining conditionsFiltering by numeric intervalMultiple filtering on one columnLIKE filteringNOT like this!
3. Aggregating
MINimal and MAXimal valuesSUMming valuesMean valuesROUNDing
4. Sorting
Sorting by one columnSorting in DESCending orderThe cheapest carSorting by multiple columns
5. Grouping
What is grouping?More aggregate statistics!Grouping by multiple columnsThe cheapest combinationHAVING some conditionsLeast consuming carsFiltering group size
6. Practicing
Challenge: Unique combinationsChallenge: Average Q-series cars priceChallenge: The cheapest new A-series carsChallenge: Relation between engine size and fuel consumptionChallenge: Mileage and manufacture year - is there relation?Challenge: Average price for each model and yearChallenge: The most expensive transmission + engine size combinations

bookChallenge: The most expensive transmission + engine size combinations

Task
test

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From the audi_cars table calculate the average price for each combination of transmission and enginesize. Round average price to 0 decimals (convert to integer). Filter to only those groups having at least 10 cars within. Sort the results in descending order by average price and extract only the first 5 rows.

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Section 6. Chapter 7
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bookChallenge: The most expensive transmission + engine size combinations

Task
test

Swipe to show code editor

From the audi_cars table calculate the average price for each combination of transmission and enginesize. Round average price to 0 decimals (convert to integer). Filter to only those groups having at least 10 cars within. Sort the results in descending order by average price and extract only the first 5 rows.

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 6. Chapter 7
toggle bottom row

bookChallenge: The most expensive transmission + engine size combinations

Task
test

Swipe to show code editor

From the audi_cars table calculate the average price for each combination of transmission and enginesize. Round average price to 0 decimals (convert to integer). Filter to only those groups having at least 10 cars within. Sort the results in descending order by average price and extract only the first 5 rows.

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!

Task
test

Swipe to show code editor

From the audi_cars table calculate the average price for each combination of transmission and enginesize. Round average price to 0 decimals (convert to integer). Filter to only those groups having at least 10 cars within. Sort the results in descending order by average price and extract only the first 5 rows.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 6. 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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