Class ImpalaNestedTypesProfile

tests/comparison/query_profile.py:686–711

class ImpalaNestedTypesProfile(DefaultProfile):

  def __init__(self):
    super(ImpalaNestedTypesProfile, self).__init__()
    self._probabilities['OPTIONAL_QUERY_CLAUSES']['WITH'] = 0.3
    self._probabilities['MISC']['INLINE_VIEW'] = 0.3

  def use_lateral_join(self):
    return random() < 0.5

  def use_boolean_expr_for_lateral_join(self):
    return random() < 0.2

  def get_num_boolean_exprs_for_lateral_join(self):
    if random() < 0.8:
      return 0
    result = 1
    while random() < 0.6:
      result += 1
    return result

  def get_table_count(self):
    num = 1
    while random() < (0.85 ** num):
      num += 1
    return num


# This profile was added for ad-hoc testing.