Module first_last

Defines the FIRST_VALUE/LAST_VALUE aggregations.

Structs

FirstValue

FirstValueAccumulator

LastValue

Functions

first_value

Returns the first value in a group of values.

first_value_udaf

AggregateFunction that returns a AggregateUDF for FirstValue

last_value

Returns the last value in a group of values.

last_value_udaf

AggregateFunction that returns a AggregateUDF for LastValue