Module aggregates 

Aggregate discovery and expression equivalence for SQL grouping.

Re-exports

pub use super::is_builtin_aggregate;

Functions

aggregate_exprs

aggregate_slot_index

aggregate_targets

Aggregate states needed by a query block, in accumulator order.

collect_aggregate_exprs

compile_group_slots

Group values follow aggregate finalizers in the retained scalar slot namespace. Match a complete grouped expression before descending into its inputs.

compile_having_aggregate_slots

compile_projection_aggregate_slots

contains_aggregate

expr_references_columns

Collect the top-level column names an expression reads. Returns false when the expression can reach arbitrary fields (*, subqueries, window calls), in which case callers must materialise whole documents.

exprs_match

has_aggregate

is_aggregate

literals_equal

select_grouping_set

An absent grouping-set key is NULL as a complete expression, even when another selected key exposes one of its inputs. Aggregate arguments still read the original input rows.