Under pressure
Are there some tracks that have never been bought? Let's find out.
For the moment, let's find out which tracks have been bought at least once.
Bu egzersiz
Introduction to Oracle SQL
kursunun bir parçasıdırEgzersiz talimatları
- Find the tracks that appear in the
Tracktable, that also appear in theInvoiceLineone.
Uygulamalı interaktif egzersiz
Bu örnek kodu tamamlayarak bu egzersizi bitirin.
-- Get track IDs that appear in InvoiceLine
SELECT TrackId
FROM ___
___
SELECT TrackId
FROM ___