SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function arrayEnumerateUniqRanked (children 1)
     ExpressionList (children 3)
      Literal UInt64_2
      Literal Array_[Array_[\'a\', \'b\', \'a\'], Array_[\'a\', \'b\', \'a\'], Array_[\'c\']]
      Literal UInt64_2