SQL Playground
Welcome to the SQL Playground!

Unlike in the usual exercises, the SQL instance in the playground
is not resetted every time you run a new query (and will persist as long as this tab is open).
In order to populate an exemple table structure, you may use:
  • Create a basic 'customer' table
  • Create 2 exemplary 'customer' entries
  • Delete the 'customer' table
Your Query
Your Output