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Lære Grouping by multiple columns | Grouping
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Grouping by multiple columns

Can we group observations based on multiple columns? For example, we can group all cars by year and engine size and find the most expensive within these.

To group by multiple columns use the same approach as for sorting by multiple columns: just put it within GROUP BY statement separated with a comma. The query for the example above will look like this:

123
SELECT year, enginesize, AVG(price) FROM audi_cars GROUP BY year, enginesize
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From the audi_cars table calculate the maximum, average, and minimum price for each model manufactured in different years.

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Grouping by multiple columns

Can we group observations based on multiple columns? For example, we can group all cars by year and engine size and find the most expensive within these.

To group by multiple columns use the same approach as for sorting by multiple columns: just put it within GROUP BY statement separated with a comma. The query for the example above will look like this:

123
SELECT year, enginesize, AVG(price) FROM audi_cars GROUP BY year, enginesize
copy
Oppgave

Swipe to start coding

From the audi_cars table calculate the maximum, average, and minimum price for each model manufactured in different years.

Løsning

Switch to desktopBytt til skrivebordet for virkelighetspraksisFortsett der du er med et av alternativene nedenfor
Alt var klart?

Hvordan kan vi forbedre det?

Takk for tilbakemeldingene dine!

close

Awesome!

Completion rate improved to 2.63

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