SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function less (children 1)
     ExpressionList (children 2)
      Function cos (children 1)
       ExpressionList (children 1)
        Function divide (children 1)
         ExpressionList (children 2)
          Function pi (children 1)
           ExpressionList
          Literal UInt64_2
      Literal Float64_1e-9