SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function less (children 1)
     ExpressionList (children 2)
      Function abs (children 1)
       ExpressionList (children 1)
        Function minus (children 1)
         ExpressionList (children 2)
          Function atanh (children 1)
           ExpressionList (children 1)
            Function tanh (children 1)
             ExpressionList (children 1)
              Literal UInt64_1
          Literal UInt64_1
      Literal Float64_0.00001