class DuckDB::PreparedStatement

The second argument value is to expected Integer value between 0 to 255.
The index of first parameter is 1 not 0.
The first argument is index of parameter.
binds i-th parameter with SQL prepared statement.

def bind_uint8(index, val)
  return _bind_uint8(index, val) if val.between?(0, 255)
  raise DuckDB::Error, "can't bind uint8(bind_uint8) to `#{val}`. The `#{val}` is out of range 0..255."
end