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.
Latihan ini adalah bagian dari kursus
Introduction to Redshift
Latihan interaktif praktis
Cobalah latihan ini dengan menyelesaikan kode contoh berikut.
-- Use SUBSTR on 'datacamp' starting at 4 as extract
SELECT ___('___', ___) AS ___;