datafusion_physical_plan::aggregates

Function get_finer_aggregate_exprs_requirement

Source 
pub fn get_finer_aggregate_exprs_requirement(
    aggr_exprs: &mut [Arc<AggregateFunctionExpr>],
    group_by: &PhysicalGroupBy,
    eq_properties: &EquivalenceProperties,
    agg_mode: &AggregateMode,
) -> Result<LexRequirement>
Expand description

Get the common requirement that satisfies all the aggregate expressions.

§Parameters

  • aggr_exprs: A slice of AggregateFunctionExpr containing all the aggregate expressions.
  • group_by: A reference to a PhysicalGroupBy instance representing the physical GROUP BY expression.
  • eq_properties: A reference to an EquivalenceProperties instance representing equivalence properties for ordering.
  • agg_mode: A reference to an AggregateMode instance representing the mode of aggregation.

§Returns

A LexRequirement instance, which is the requirement that satisfies all the aggregate requirements. Returns an error in case of conflicting requirements.