SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function minus (children 1)
     ExpressionList (children 2)
      Function toDecimal64 (children 1)
       ExpressionList (children 2)
        Literal UInt64_4
        Literal UInt64_4
      Function materialize (children 1)
       ExpressionList (children 1)
        Function toDecimal32 (children 1)
         ExpressionList (children 2)
          Literal UInt64_2
          Literal UInt64_2
