Cron expression for automatic execution, or a named schedule reference.
SCHEDULE '0 6 * * *'The SCHEDULE clause defines when the pipeline runs automatically. It accepts either an inline cron expression (e.g., `'0 6 * * *'` for 6:00 AM daily) or the name of a previously declared SCHEDULE object. When an inline cron is provided, the system creates an associated schedule record automatically. If omitted, the pipeline has no automated trigger and can only be executed manually. The TIMEZONE clause controls which timezone the cron expression is evaluated in; when TIMEZONE is not specified, cron evaluation defaults to UTC. The pipeline must also have STATUS set to `active` for the scheduler to actually fire runs.