Package org.teiid.query.function.aggregate

Interface Summary

Interface	Description
ExposedStateUserDefinedAggregate<T>	Internal extension of the user defined aggregate interface so that we can expose the internal state.

Class Summary

Class	Description
AggregateFunction	This represents the interface for an aggregate function.
ArrayAgg
Avg	Accumulates (per tuple) and calculates the average of the values of a column.
ConstantFunction
Count	Just a simple COUNT() implementation that counts every non-null row it sees.
CountBig	Just a simple COUNT() implementation that counts every non-null row it sees.
FirstLastValue	Just a simple First/Last_value() implementation
JSONArrayAgg	Aggregates Json entries
LeadLagValue	We store up to three values related to the lead/lag per row
Max
Min
NthValue
Ntile	Captures the row number and number of tiles for a given row post processing logic uses the row count over the window to calculate the final output
RankingFunction	computes rank/dense_rank
RankingFunctionBig	computes rank/dense_rank
SingleArgumentAggregateFunction
StatsFunction
StringAgg	Aggregates binary and character strings
Sum	Accumulates (per tuple) and calculates the sum of the values of a column.
TextAgg	Aggregates Text entries
UserDefined
XMLAgg	Aggregates XML entries