Display group by field value only once for each group

I have a table with following fields:
TicketNo (varchar2)
TName (varchar2)
DateIssue (Date/Time)
I wanto retrieve result in the following form:
DateIssue TName TicketNo
01-oct-2006 ABC 123-7733
DEF 545-54454
GHI 254-4545
02-oct-2006 JKL 454-7897
MNO 444-7878
TName and TicketNos must be grouped by DateIssue. Since "Group By" clause uses agregate functions only, therefore this type of query will not run:
SQL> Select DateIssue,TName,TicketNo from Table1 group by DateIssue order by DateIssue;
How to display the above given result?

SQL> select * from tickets;
TICKETNO   TNAME      DATEISSUE                                                
121-565    abc        04-FEB-07                                                
454-hj     def        04-FEB-07                                                
4545-856   gftr       03-FEB-07                                                
fg45-856   gth        03-FEB-07                                                
SQL> select decode(row_number() over(partition by to_date(dateissue) order by ticketno),1,dateissue) dateissue
  2         ,tname,ticketno
  3  from tickets;
DATEISSUE TNAME      TICKETNO                                                  
03-FEB-07 gftr       4545-856                                                  
          gth        fg45-856                                                  
04-FEB-07 abc        121-565                                                   
          def        454-hj
Message was edited by:
        jeneesh                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

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    Simon Hou

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