SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Identifier result
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 3)
          ExpressionList (children 1)
           Function toStartOfFifteenMinutes (alias result) (children 1)
            ExpressionList (children 1)
             Function plus (children 1)
              ExpressionList (children 2)
               Function toDateTime (children 1)
                ExpressionList (children 1)
                 Literal \'2017-12-25 00:00:00\'
               Function multiply (children 1)
                ExpressionList (children 2)
                 Identifier number
                 Literal UInt64_60
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.numbers
          Literal UInt64_120
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier result
