Function duckdb_profiling_info_get_value 

pub unsafe extern "C" fn duckdb_profiling_info_get_value(
    info: duckdb_profiling_info,
    key: *const c_char,
) -> duckdb_value

Returns the value of the metric of the current profiling info node. Returns nullptr, if the metric does not exist or is not enabled. Currently, the value holds a string, and you can retrieve the string by calling the corresponding function: char *duckdb_get_varchar(duckdb_value value).

@param info A profiling information object. @param key The name of the requested metric. @return The value of the metric. Must be freed with duckdb_destroy_value