rgwml 2.0.0

Typed, local-first tabular data library with columnar in-memory storage.
Documentation 
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use super::AggregateExpr;
use super::ColumnSelector;

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct GroupKey {
    pub column: ColumnSelector,
}

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct GroupByPlan {
    pub keys: Vec<GroupKey>,
    pub aggregates: Vec<AggregateExpr>,
}