SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function transform (children 1)
     ExpressionList (children 4)
      Literal UInt64_1
      Literal Array_[UInt64_1]
      Function array (children 1)
       ExpressionList (children 1)
        Function toDecimal32 (children 1)
         ExpressionList (children 2)
          Literal UInt64_42
          Literal UInt64_2
      Literal UInt64_0
