The guarded INSERT accepts 1 row and fills 2 defaults.
accepted=1
INSERT examples are tiny finite row appends; SQL dialect completeness, generated defaults, identity columns, constraints beyond visible NOT NULL, triggers, transactions, indexes, performance, and product behavior are out of scope.
Try to tamper
Wrong expected facts, derived sidecars, duplicate or missing columns, value-count mismatches, bools, and floats fail closed.
tamper rejected
Summary
This book shows exact finite INSERT behavior only.