Mistakes against query processing order
eSymphony wants to find out what composers don't have songs shorter than 1,000,000 milliseconds, and this only for tracks where the genre id equals 1.
You have received a query from someone that tried to solve this problem. They don't have the query processing order knowledge that you do and have made some mistakes. You are kind enough to help them out.
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Introduction to Oracle SQL
Anleitung zur Übung
- Adapt the query that was given to you to make it run without errors.
Interaktive Übung
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-- Adapt this query to make it run without errors
SELECT Composer, MIN(Milliseconds) AS MinSongLength
FROM Track
WHERE GenreId = 1 AND MIN(Milliseconds) > 1000000
GROUP BY Composer
ORDER BY MinSongLength