SelectWithUnionQuery (children 2)
 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)
                 Function toStartOfFifteenMinutes (children 1)
                  ExpressionList (children 1)
                   Function plus (children 1)
                    ExpressionList (children 2)
                     Function toDateTime (children 1)
                      ExpressionList (children 1)
                       Literal Float64_1000.0001220703125
                     Function multiply (children 1)
                      ExpressionList (children 2)
                       Identifier number
                       Literal UInt64_65536
               Function multiply (children 1)
                ExpressionList (children 2)
                 Identifier number
                 Literal UInt64_9223372036854775807
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.numbers
          Literal UInt64_1048576
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier result
 Identifier Null