Module window_state

Structures used to hold window function state (for implementing WindowUDFs)

Structs

PartitionBatchState

State for each unique partition determined according to PARTITION BY column(s)

WindowAggState

Holds the state of evaluating a window function

WindowFrameStateGroups

This structure encapsulates all the state information we require as we scan groups of data while processing window frames.

WindowFrameStateRange

This structure encapsulates all the state information we require as we scan ranges of data while processing RANGE frames. Attribute sort_options stores the column ordering specified by the ORDER BY clause. This information is used to calculate the range.

Enums

WindowFrameContext

This object stores the window frame state for use in incremental calculations.