Module datafusion::physical_optimizer::pruning
source · Expand description
PruningPredicate
to apply filter Expr
to prune “containers”
based on statistics (e.g. Parquet Row Groups)
Structs
- Evaluates filter expressions on statistics, rather than the actual data. If no rows could possibly pass the filter entire containers can be “pruned” (skipped), without reading any actual data, leading to significant performance improvements.
Traits
- Interface to pass statistics (min/max/nulls) information to
PruningPredicate
.