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SQL Select Column

You can retrieve not all the data, but only some columns. For this, you should specify column name, for example, singer or title.

This query returns all the data containing in the title column:


              
1

            
SELECT title FROM songs
copy

You can also choose two or more columns:


              
1

            
SELECT title, singer FROM songs
copy

Now you selected all records from the table, but only title and singer columns.

Opgave

Swipe to start coding

Select info about album and year for all records from songs.

Løsning

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Sektion 1. Kapitel 3
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book
SQL Select Column

You can retrieve not all the data, but only some columns. For this, you should specify column name, for example, singer or title.

This query returns all the data containing in the title column:


              
1

            
SELECT title FROM songs
copy

You can also choose two or more columns:


              
1

            
SELECT title, singer FROM songs
copy

Now you selected all records from the table, but only title and singer columns.

Opgave

Swipe to start coding

Select info about album and year for all records from songs.

Løsning

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 1. Kapitel 3
Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
Vi beklager, at noget gik galt. Hvad skete der?
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