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Combining conditions

Often it's not enough to check for only one condition. What if we want to check if multiple conditions hold at the same time? Or at least one of them?

Conditions in SQL can be combined by using AND and OR statements within WHERE block. AND checks if all the conditions hold while OR checks if at least one of the conditions holds. For example, we can combine conditions from the two previous chapters: filter for hybrid cars with mileage less than 5000 miles.


              
123

            
SELECT *
FROM audi_cars
WHERE fueltype = 'Hybrid' AND mileage < 5000
copy

Also, we can extract only either cars with Automatic transmission either with an engine size less than 3 by using OR statement.


              
123

            
SELECT *
FROM audi_cars
WHERE transmission = 'Automatic' OR enginesize < 3
copy
Oppgave

Swipe to start coding

From audi_cars table extract only Diesel cars (fueltype column) with mileage less than 2000.

Løsning

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Alt var klart?

Hvordan kan vi forbedre det?

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Seksjon 2. Kapittel 3
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book
Combining conditions

Often it's not enough to check for only one condition. What if we want to check if multiple conditions hold at the same time? Or at least one of them?

Conditions in SQL can be combined by using AND and OR statements within WHERE block. AND checks if all the conditions hold while OR checks if at least one of the conditions holds. For example, we can combine conditions from the two previous chapters: filter for hybrid cars with mileage less than 5000 miles.


              
123

            
SELECT *
FROM audi_cars
WHERE fueltype = 'Hybrid' AND mileage < 5000
copy

Also, we can extract only either cars with Automatic transmission either with an engine size less than 3 by using OR statement.


              
123

            
SELECT *
FROM audi_cars
WHERE transmission = 'Automatic' OR enginesize < 3
copy
Oppgave

Swipe to start coding

From audi_cars table extract only Diesel cars (fueltype column) with mileage less than 2000.

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!

Seksjon 2. Kapittel 3
Switch to desktopBytt til skrivebordet for virkelighetspraksisFortsett der du er med et av alternativene nedenfor
Vi beklager at noe gikk galt. Hva skjedde?
some-alt