SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 4)
    Function materialize (alias arr) (children 1)
     ExpressionList (children 1)
      Literal Array_[UInt64_2, UInt64_1, UInt64_3]
    Function arraySort (children 1)
     ExpressionList (children 1)
      Identifier arr
    Function arrayReverseSort (children 1)
     ExpressionList (children 1)
      Identifier arr
    Function arraySort (children 1)
     ExpressionList (children 2)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier x
        Function negate (children 1)
         ExpressionList (children 1)
          Identifier x
      Identifier arr
