datafusion_functions_aggregate_common::aggregate::groups_accumulator

Module accumulate

Source
Expand description

GroupsAccumulator helpers: NullState and accumulate_indices

Structs§

  • NullState
    Track the accumulator null state per row: if any values for that group were null and if any values have been seen at all for that group.

Functions§

  • accumulate
    Invokes value_fn(group_index, value) for each non null, non filtered value of value,
  • accumulate_indices
    This function is called to update the accumulator state per row when the value is not needed (e.g. COUNT)