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Please enable JavaScript in your browser settings or update your browser.Challenge: Mileage and manufacture year - is there relation? | 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: Mileage and manufacture year - is there relation?

Task

From the audi_cars table calculate the average mileage for each manufacturing year. Sort result in ascending order by year.

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Section 6. Chapter 5
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bookChallenge: Mileage and manufacture year - is there relation?

Task

From the audi_cars table calculate the average mileage for each manufacturing year. Sort result in ascending order by year.

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 5
toggle bottom row

bookChallenge: Mileage and manufacture year - is there relation?

Task

From the audi_cars table calculate the average mileage for each manufacturing year. Sort result in ascending order by year.

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

From the audi_cars table calculate the average mileage for each manufacturing year. Sort result in ascending order by year.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 6. Chapter 5
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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