Leader specific functions
Leader nodes have special functions that run only on them, a common source of errors. For example, you should always use the SUBSTRING function and avoid SUBSTR. Let's experiment and see why.
Cet exercice fait partie du cours
Introduction to Redshift
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
-- Use SUBSTR on 'datacamp' starting at 4 as extract
SELECT ___('___', ___) AS ___;