Discovery exercise · NULL · COALESCE

Replace a NULL value with COALESCE

Display clear labeling when a customer’s phone is absent.

Free Discovery access

Create your space to open this exercise.

Replace a NULL value with COALESCE 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.