This is very interesting code that uses Umbra v0.2-957, PostgreSQL 17.2, and DuckDB v1.1.3.<p>One minor point: some of the problems could not be implemented in DuckDB due to a missing xor operator - but the documentation includes an xor function (<a href="https://duckdb.org/docs/sql/functions/numeric.html#xorx-y" rel="nofollow">https://duckdb.org/docs/sql/functions/numeric.html#xorx-y</a>) for the same version. Is the form of the function not suitable?