Kursusindhold
SQL Basics
SQL Basics
Word filtering
Imagine that we want to extract all the hybrid cars from our database. As you understand, doing it manually is a worthless job and has to be automated.
Surely it has already been implemented! To filter observations based on columns with text use WHERE statement. For example,
SELECT * FROM audi_cars WHERE fueltype = 'Hybrid'
This query will return all the Hybrid cars.
Please note, that in that case, you have to use single quotes, not double!
Swipe to start coding
From audi_cars table extract only cars with Automatic transmission. Extract all the columns.
Løsning
Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående mulighederTak for dine kommentarer!
Word filtering
Imagine that we want to extract all the hybrid cars from our database. As you understand, doing it manually is a worthless job and has to be automated.
Surely it has already been implemented! To filter observations based on columns with text use WHERE statement. For example,
SELECT * FROM audi_cars WHERE fueltype = 'Hybrid'
This query will return all the Hybrid cars.
Please note, that in that case, you have to use single quotes, not double!
Swipe to start coding
From audi_cars table extract only cars with Automatic transmission. Extract all the columns.
Løsning
Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående mulighederTak for dine kommentarer!
Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder