Kursinhalt
SQL Tutorial for Beginners
SQL Tutorial for Beginners
SQL Order By
To sort your result records, use ORDER BY construction. There is a syntax of query:
-- do not run this query SELECT col1, col2, ... FROM table WHERE condition ORDER BY some_col1, some_col2, ...
ORDER BY is at the end of the query, and sorts by one or multiple columns in their order. For example, if there is a construction ORDER BY singer, title, the result will be sorted by singer's name, but for multiple songs of the same singer, records will be sorted by title.
By default, sorting is in ascending order, but you can define it. Use ASC and DESC keywords after each column name:
SELECT id, title, year FROM songs ORDER BY year DESC
ASC or DESC statement relates to the column name before it. It means, that in ORDER BY title ASC, price DESC first sorts by title in ascending order, and then by price in descending order.
Swipe to start coding
Create a rating of songs from the most to the least expensive. Display title, singer, and price of these songs.
Lösung
Wechseln Sie zum Desktop, um in der realen Welt zu übenFahren Sie dort fort, wo Sie sind, indem Sie eine der folgenden Optionen verwendenDanke für Ihr Feedback!
SQL Order By
To sort your result records, use ORDER BY construction. There is a syntax of query:
-- do not run this query SELECT col1, col2, ... FROM table WHERE condition ORDER BY some_col1, some_col2, ...
ORDER BY is at the end of the query, and sorts by one or multiple columns in their order. For example, if there is a construction ORDER BY singer, title, the result will be sorted by singer's name, but for multiple songs of the same singer, records will be sorted by title.
By default, sorting is in ascending order, but you can define it. Use ASC and DESC keywords after each column name:
SELECT id, title, year FROM songs ORDER BY year DESC
ASC or DESC statement relates to the column name before it. It means, that in ORDER BY title ASC, price DESC first sorts by title in ascending order, and then by price in descending order.
Swipe to start coding
Create a rating of songs from the most to the least expensive. Display title, singer, and price of these songs.
Lösung
Wechseln Sie zum Desktop, um in der realen Welt zu übenFahren Sie dort fort, wo Sie sind, indem Sie eine der folgenden Optionen verwendenDanke für Ihr Feedback!
Wechseln Sie zum Desktop, um in der realen Welt zu übenFahren Sie dort fort, wo Sie sind, indem Sie eine der folgenden Optionen verwenden