This seems quite false. NOWAIT would error in the face of locked rows. SKIP LOCKED skips without error. "With NOWAIT, the statement reports an error, rather t

This seems quite false. NOWAIT would error in the face of locked rows. SKIP LOCKED skips without error. "With NOWAIT, the statement reports an error, rather than waiting, if a selected row cannot be locked immediately. Note that NOWAIT applies only to the row-level lock(s) — the required ROW SHARE table-level lock is still taken in the ordinary way"