SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function sleep (children 1)
     ExpressionList (children 1)
      Function minus (children 1)
       ExpressionList (children 2)
        Function divide (children 1)
         ExpressionList (children 2)
          Function pow (children 1)
           ExpressionList (children 2)
            Literal UInt64_2
            Literal UInt64_64
          Literal UInt64_1000000
        Literal UInt64_1
