apply_scan_predicate_to_scan_ir

polars_mem_engine::scan_predicate::functions

Function apply_scan_predicate_to_scan_ir 

Source 
pub fn apply_scan_predicate_to_scan_ir(
    scan_ir_node: Node,
    ir_arena: &mut Arena<IR>,
    expr_arena: &mut Arena<AExpr>,
) -> PolarsResult<()>
Expand description

Filters the list of files in an IR::Scan based on the contained predicate. This is possible if the predicate has components that refer to only the hive parts and there is no e.g. row index / slice.

This also applies the projection onto the hive parts.

ยงPanics

Panics if scan_ir_node is not IR::Scan.