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SQL Tutorial for Beginners
SQL Tutorial for Beginners
SQL Top and Limit
TOP and LIMIT statements determine the amount of records in the result. For example, you want to limit the result with 7 records. In MS SQL and PostgreSQL, use the LIMIT keyword at the end of the query:
--Find top-3 the eldest songs SELECT title, year FROM songs ORDER BY year LIMIT 3
In MySQL syntax, use TOP keyword with select to limit the number of output rows. You can also set a percentage: SELECT TOP 50 PERCENT.
During this course we will use the LIMIT statement.
Swipe to start coding
Find 5 first albums and their singers, which are sorted by naming, and return the result. Choose only albums from the 1970s.
Løsning
Skift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående mulighederTak for dine kommentarer!
SQL Top and Limit
TOP and LIMIT statements determine the amount of records in the result. For example, you want to limit the result with 7 records. In MS SQL and PostgreSQL, use the LIMIT keyword at the end of the query:
--Find top-3 the eldest songs SELECT title, year FROM songs ORDER BY year LIMIT 3
In MySQL syntax, use TOP keyword with select to limit the number of output rows. You can also set a percentage: SELECT TOP 50 PERCENT.
During this course we will use the LIMIT statement.
Swipe to start coding
Find 5 first albums and their singers, which are sorted by naming, and return the result. Choose only albums from the 1970s.
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