SELECTing certain columns
Let's dig into our database. This database has 9 columns:
model- model of the caryear- year of manufactureprice- car price in Eurostransmission- type of gearboxmileage- miles drovefueltype- engine fuel typetax- road taxmpg- miles per gallonenginesize- engine size in liters.
To extract certain columns you need to select them by their names, like:
12SELECT column1, column2, column3 FROM table_name
Please note, that SQL is also case-insensitive to column names, i.e. if the column has name id both notations id and ID will be interpreted the same.
Swipe to start coding
Extract columns model, year, and price from the audi_cars database.
Solução
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Completion rate improved to 2.63SELECTing certain columns
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Let's dig into our database. This database has 9 columns:
model- model of the caryear- year of manufactureprice- car price in Eurostransmission- type of gearboxmileage- miles drovefueltype- engine fuel typetax- road taxmpg- miles per gallonenginesize- engine size in liters.
To extract certain columns you need to select them by their names, like:
12SELECT column1, column2, column3 FROM table_name
Please note, that SQL is also case-insensitive to column names, i.e. if the column has name id both notations id and ID will be interpreted the same.
Swipe to start coding
Extract columns model, year, and price from the audi_cars database.
Solução
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoObrigado pelo seu feedback!
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