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

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

Taak

Swipe to start coding

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

Oplossing

Schakel over naar desktop voor praktijkervaringGa verder vanaf waar je bent met een van de onderstaande opties

Was alles duidelijk?

Bedankt voor je feedback!

Sectie 2. Hoofdstuk 3

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?


              123
            
SELECT *
FROM audi_cars
WHERE fueltype = 'Hybrid' AND mileage < 5000

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

Taak

Swipe to start coding

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

Oplossing

Schakel over naar desktop voor praktijkervaringGa verder vanaf waar je bent met een van de onderstaande opties

Was alles duidelijk?

Bedankt voor je feedback!

Sectie 2. Hoofdstuk 3

Schakel over naar desktop voor praktijkervaringGa verder vanaf waar je bent met een van de onderstaande opties