SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Literal UInt64_2 (alias x)
    Function arrayJoin (children 1)
     ExpressionList (children 1)
      Literal Array_[NULL, NULL, NULL]
   ExpressionList (children 2)
    ExpressionList (children 1)
     Literal UInt64_0
    ExpressionList (children 1)
     Literal Array_[NULL, NULL, NULL]
   ExpressionList (children 1)
    OrderByElement (children 3)
     Identifier x
     Literal UInt64_1
     Literal UInt64_10
