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bookSUMming values

There is one more function that has to be implemented - function for summing values. For example, we may want to calculate the total revenue for a certain item.

To sum values in column use SUM function followed by column which values you want to sum. For our abstract example,


              
123

            
SELECT SUM(revenue)
FROM sells
WHERE item = 'Sofa'
copy

Please note, that SUM function works only with numeric columns.

Task

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From the audi_cars table calculate the total tax for all RS4 cars.

Solution

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SectionΒ 3. ChapterΒ 2
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bookSUMming values

There is one more function that has to be implemented - function for summing values. For example, we may want to calculate the total revenue for a certain item.

To sum values in column use SUM function followed by column which values you want to sum. For our abstract example,


              
123

            
SELECT SUM(revenue)
FROM sells
WHERE item = 'Sofa'
copy

Please note, that SUM function works only with numeric columns.

Task

Swipe to start coding

From the audi_cars table calculate the total tax for all RS4 cars.

Solution

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!

SectionΒ 3. ChapterΒ 2
single

single

close

Awesome!

Completion rate improved to 2.63

bookSUMming values

Swipe to show menu

There is one more function that has to be implemented - function for summing values. For example, we may want to calculate the total revenue for a certain item.

To sum values in column use SUM function followed by column which values you want to sum. For our abstract example,


              
123

            
SELECT SUM(revenue)
FROM sells
WHERE item = 'Sofa'
copy

Please note, that SUM function works only with numeric columns.

Task

Swipe to start coding

From the audi_cars table calculate the total tax for all RS4 cars.

Solution

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!

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