Struct AggregateClauses 

pub struct AggregateClauses {
    pub group_by: Vec<SqlExpr>,
    pub grouping_sets: Option<Vec<Vec<usize>>>,
    pub aggregates: Vec<AggregateExpr>,
    pub having: Vec<Filter>,
    pub group_by_aliases: Vec<Option<String>>,
    pub output_order: Vec<AggOutputSlot>,
    pub hidden_aggregates: bool,
}

The planned aggregate clauses of a SELECT.

Fields

group_by: Vec<SqlExpr>

GROUP BY keys. With grouping sets, the canonical deduplicated keys.

grouping_sets: Option<Vec<Vec<usize>>>

ROLLUP / CUBE / GROUPING SETS expansion, as indices into group_by.

aggregates: Vec<AggregateExpr>

SELECT-list aggregates, then any aggregate only HAVING names, then the GROUPING(col) pseudo-aggregates.

having: Vec<Filter>

HAVING predicates bound to the aggregates’ output keys.

group_by_aliases: Vec<Option<String>>

SELECT-list output aliases of the GROUP BY keys.

output_order: Vec<AggOutputSlot>

SELECT-list interleaving of keys and aggregates.

hidden_aggregates: bool

Whether HAVING or ORDER BY computes an aggregate the SELECT list does not show.