Function pruned_partition_list 

pub async fn pruned_partition_list<'a>(
    ctx: &'a dyn Session,
    store: &'a dyn ObjectStore,
    table_path: &'a ListingTableUrl,
    filters: &'a [Expr],
    file_extension: &'a str,
    partition_cols: &'a [(String, DataType)],
) -> Result<BoxStream<'a, Result<PartitionedFile>>>

Discover the partitions on the given path and prune out files that belong to irrelevant partitions using filters expressions. filters should only contain expressions that can be evaluated using only the partition columns.