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perf: support pushing physical filters down through DeltaScan #3859

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Merged
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Oct 17, 2025
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perf: support pushing physical filters down through DeltaScan #3859

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13 changes: 13 additions & 0 deletions crates/core/src/delta_datafusion/table_provider.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ use datafusion::logical_expr::utils::split_conjunction;
use datafusion::logical_expr::{BinaryExpr, LogicalPlan, Operator};
use datafusion::optimizer::simplify_expressions::ExprSimplifier;
use datafusion::physical_optimizer::pruning::PruningPredicate;
use datafusion::physical_plan::filter_pushdown::{FilterDescription, FilterPushdownPhase};
use datafusion::physical_plan::metrics::{ExecutionPlanMetricsSet, MetricBuilder, MetricsSet};
use datafusion::physical_plan::{
stream::RecordBatchStreamAdapter, DisplayAs, DisplayFormatType, ExecutionPlan, PhysicalExpr,
Expand Down Expand Up @@ -980,6 +981,18 @@ impl ExecutionPlan for DeltaScan {
fn partition_statistics(&self, partition: Option<usize>) -> Result<Statistics> {
self.parquet_scan.partition_statistics(partition)
}

fn gather_filters_for_pushdown(
&self,
_phase: FilterPushdownPhase,
parent_filters: Vec<Arc<dyn PhysicalExpr>>,
_config: &ConfigOptions,
) -> Result<FilterDescription> {
Ok(FilterDescription::from_children(
parent_filters,
&self.children(),
)?)
}
}

/// The logical schema for a Deltatable is different from the protocol level schema since partition
Expand Down
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