SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function minus (children 1)
     ExpressionList (children 2)
      Function plus (children 1)
       ExpressionList (children 2)
        Function plus (children 1)
         ExpressionList (children 2)
          Function toDateTime (children 1)
           ExpressionList (children 1)
            Literal \'2017-10-30 08:18:19\'
          Function toIntervalDay (children 1)
           ExpressionList (children 1)
            Literal UInt64_1
        Function toIntervalMonth (children 1)
         ExpressionList (children 1)
          Literal UInt64_1
      Function toIntervalYear (children 1)
       ExpressionList (children 1)
        Literal UInt64_1