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 acosh (children 1)
           ExpressionList (children 1)
            Literal UInt64_2
          Function ln (children 1)
           ExpressionList (children 1)
            Function plus (children 1)
             ExpressionList (children 2)
              Literal UInt64_2
              Function sqrt (children 1)
               ExpressionList (children 1)
                Literal UInt64_3
      Literal Float64_1e-9