Numbering Olympic games in ascending order
The Summer Olympics dataset contains the results of the games between 1896 and 2012. The first Summer Olympics were held in 1896, the second in 1900, and so on. What if you want to easily query the table to see in which year the 13th Summer Olympics were held? You'd need to number the rows for that.
Deze oefening maakt deel uit van de cursus
PostgreSQL Summary Stats and Window Functions
Oefeninstructies
- Assign a number to each year in which Summer Olympic games were held.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
SELECT
Year,
-- Assign numbers to each year
___ ___ AS Row_N
FROM (
SELECT ___ ___
FROM Summer_Medals
ORDER BY Year ASC
) AS Years
ORDER BY Year ASC;