Another one bites the dust
Following up on our track purchase analysis, let's get the tracks that have never been bought.
Questo esercizio fa parte del corso
Introduction to Oracle SQL
Istruzioni dell'esercizio
- Find the tracks that appear in the
Tracktable, that don't appear in theInvoiceLineone.
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
-- Get track IDs that don't appear in invoiceline
SELECT ___
FROM ___
___
SELECT ___
FROM ___