SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function addInterval (children 1)
     ExpressionList (children 2)
      Function tuple (children 1)
       ExpressionList
      Function toIntervalMonth (children 1)
       ExpressionList (children 1)
        Literal UInt64_1