name: group_by
description: >-
  Array containing available `group_by` values.

  Grouping by `sub_dsp` is used to break down Amazon data by the sub-DSPs:

  - amazonprime

  - amazonmusicunlimited

  - amazonadsupported
in: query
required: false
schema:
  $ref: '../schemas/properties/group_by_field_array.yaml'
examples:
  'date':
    value: 'date'
  'sub_dsp':
    value: 'sub_dsp'
  'date,sub_dsp':
    value: [ 'date', 'sub_dsp' ]