SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function arrayJoin (alias x) (children 1)
     ExpressionList (children 1)
      Literal Array_[Array_[UInt64_3, UInt64_4, UInt64_5], Array_[UInt64_6, UInt64_7], Array_[UInt64_2], Array_[UInt64_1, UInt64_1]]
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier x
