Function cache_query_fields_route 

pub fn cache_query_fields_route<const N: usize>(
    provider: Option<&str>,
    sql: &str,
    local_cache_scope: u64,
    c_params: &[DataField; N],
    query_params: &[DataField],
    cache: &mut impl CacheAble<DataField, RowData, N>,
) -> RowData

本地缓存路由派发：provider 为 Some(name) 时走命名 provider，None 时走默认 provider。