Discovery exercise · IS NULL

Identify missing deliveries

Distinguish a missing date from an empty string or status.

Free Discovery access

Create your space to open this exercise.

Identify missing deliveries is one of 8 lessons and 15 free exercises linked to an account. No card is required.

  • Resume progress from your account
  • Exercises with expected results and explanations
  • Guided Sales Analysis project
Create my Discovery spaceI already have an account
Free permanent access.
Identify missing deliveries — SQL exercise — SQL.tn