Module aggregates 

Aggregate functions for GROUP BY operations

This module provides SQL aggregate functions like SUM, AVG, COUNT, MIN, MAX that work with the DataView partitioning system for efficient GROUP BY queries.

Modules

analytics

Analytics aggregate functions for time series and statistical operations

functions

Concrete implementations of aggregate functions

Structs

AggregateRegistry

Registry of aggregate functions

AvgState

State for AVG aggregation

MinMaxState

State for MIN/MAX aggregation

ModeState

State for MODE aggregation (most frequent value)

PercentileState

State for PERCENTILE aggregation

StringAggState

State for STRING_AGG aggregation

SumState

State for SUM aggregation

VarianceState

State for VARIANCE/STDDEV aggregation

Enums

AggregateState

State maintained during aggregation

Traits

AggregateFunction

Trait for all aggregate functions

Functions

contains_aggregate

Check if an expression contains aggregate functions

is_aggregate_compatible

Check if an expression is aggregate-compatible (either an aggregate or a constant) This is used to determine if a SELECT list should produce a single row

is_constant_expression

Check if an expression is a constant (string literal, number literal, boolean, null) Constants are compatible with aggregate queries and should produce a single row