SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function intDiv (children 1)
     ExpressionList (children 2)
      Function TIMEDIFF (children 1)
       ExpressionList (children 2)
        Function NOW (children 1)
         ExpressionList
        Function UTC_TIMESTAMP (children 1)
         ExpressionList
      Literal UInt64_600