Module aggregate

Defines aggregations over Arrow arrays.

Macros

• bit_operation 🔒

Structs

• MaxAccumulator 🔒
• MinAccumulator 🔒
• SumAccumulator 🔒

Constants

• PREFERRED_VECTOR_SIZE 🔒
  The preferred vector size in bytes for the target platform. Note that the avx512 target feature is still unstable and this also means it is not detected on stable rust.
• PREFERRED_VECTOR_SIZE_NON_NULL 🔒
  non-nullable aggregation requires fewer temporary registers so we can use more of them for accumulators

Traits

• NumericAccumulator 🔒
  An accumulator for primitive numeric values.

Functions

• aggregate 🔒
  Generic aggregation for any primitive type. Returns None if there are no non-null values in array.
• aggregate_nonnull_chunk 🔒
• aggregate_nonnull_lanes 🔒
• aggregate_nonnull_simple 🔒
• aggregate_nullable_chunk 🔒
• aggregate_nullable_lanes 🔒
• bit_and
  Returns the bitwise and of all non-null input values.
• bit_or
  Returns the bitwise or of all non-null input values.
• bit_xor
  Returns the bitwise xor of all non-null input values.
• bool_and
  Returns true if all non-null input values are true, otherwise false.
• bool_or
  Returns true if any non-null input value is true, otherwise false.
• max
  Returns the maximum value in the array, according to the natural order. For floating point arrays any NaN values are considered to be greater than any other non-null value
• max_array
  Returns the max of values in the array of ArrowNumericType type, or dictionary array with value of ArrowNumericType type.
• max_binary
  Returns the maximum value in the binary array, according to the natural order.
• max_binary_view
  Returns the maximum value in the binary view array, according to the natural order.
• max_boolean
  Returns the maximum value in the boolean array
• max_string
  Returns the maximum value in the string array, according to the natural order.
• max_string_view
  Returns the maximum value in the string view array, according to the natural order.
• min
  Returns the minimum value in the array, according to the natural order. For floating point arrays any NaN values are considered to be greater than any other non-null value
• min_array
  Returns the min of values in the array of ArrowNumericType type, or dictionary array with value of ArrowNumericType type.
• min_binary
  Returns the minimum value in the binary array, according to the natural order.
• min_binary_view
  Returns the minimum value in the binary view array, according to the natural order.
• min_boolean
  Returns the minimum value in the boolean array.
• min_max_array_helper 🔒
• min_max_helper 🔒
  Helper to compute min/max of [ArrayAccessor].
• min_max_view_helper 🔒
  Helper to compute min/max of [GenericByteViewArray<T>]. The specialized min/max leverages the inlined values to compare the byte views. swap_cond is the condition to swap current min/max with the new value. For example, Ordering::Greater for max and Ordering::Less for min.
• min_string
  Returns the minimum value in the string array, according to the natural order.
• min_string_view
  Returns the minimum value in the string view array, according to the natural order.
• reduce_accumulators 🔒
• select 🔒
  Helper for branchlessly selecting either a or b based on the boolean m. After verifying the generated assembly this can be a simple if.
• sum
  Returns the sum of values in the primitive array.
• sum_array
  Returns the sum of values in the array.
• sum_array_checked
  Returns the sum of values in the array.
• sum_checked
  Returns the sum of values in the primitive array.