DuckDB SQL Reference for MotherDuck

Source Of Truth

• Prefer current DuckDB SQL docs for language features and function semantics.
• Use current MotherDuck SQL docs for MotherDuck-only commands such as shares, secrets, snapshots, and Dive operations.
• MotherDuck can lag upstream DuckDB releases for client compatibility; check MotherDuck version-lifecycle docs before promising newly released DuckDB syntax or types are available.
• If the connection path matters, verify behavior against the current Postgres-endpoint docs before promising server-mode support.

Default Posture