Re: ***Problem***

I agree with your solution.
But why, using a ronum on a single select statement may not be reliable ?

Mark Leith wrote:

> In this case, the rownum should not be a problem when using it in a sub
> select? You are only trying to get the first seven rows from the sub
> select.. Whats the problem?
>
> Fair enough, using a rownum on a single select may not be reliable, but in
> this case it should work like a charm..
>
> -----Original Message-----
> K.Karadeniz
> Sent: Thursday, February 01, 2001 12:31
> To: Multiple recipients of list ORACLE-L
>
> No, No not for this statement , my group leader tells that rownum is not
> used so much in applications becouse it can give wrong results sometimes. I
> do not know if it is correct . I ask you for approve him or not..
> Thanks
> ----- Original Message -----
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Sent: Thursday, February 01, 2001 1:25 PM
>
> paresh mehta,
> what was wrong with the sql-statement using <rownum>
>
> It works perfeclty, or am I wrong ??
>
> regards
>
> > Frank Foelz <
> _________________________________
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> -----Ursprüngliche Nachricht-----
> Von: Local Folders [mailto:asmika_at_satyam.net.in]
> Gesendet am: Donnerstag, 1. Februar 2001 08:35
> An: Multiple recipients of list ORACLE-L
> Betreff: ***Problem***
>
> Consider the following case.
> TABLE : DEPT
> empid number,
> deptid number,
> deptname varchar2(30)
> primary key (empid, deptid)
>
> now i want to fetch first seven records from a cursor whose deptid is
> maximum
> and empid is minimum. kindly let me know how to write this cursor
> statement.for example.
>
> SQL> select deptid, empid from dept;
>
> DEPTID EMPID
> --------- ---------
> 2 94204
> 2 94205
> 2 94206
> 2 94207
> 2 94208
> 5 94209
> 5 94210
> 5 94211
> 5 94212
> 5 94213
> 7 94214
> 7 94215
> 7 94216
> 7 94217
> 7 94218
>
> 15 rows selected.
>
> i want output as following by single query.
>
> DEPTID EMPID
> --------- ---------
> 7 94214
> 7 94215
> 7 94216
> 7 94217
> 7 94218
> 5 94209
> 5 94210
>
> 7 rows selected
>
> kindly reply.. thanks in advance.
>
> regards
> paresh mehta
>
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> Author: Foelz.Frank
> INET: Foelz.Frank_at_Scheidt-Bachmann.de
>
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> Author: Bunyamin K.Karadeniz
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> Author: Mark Leith
> INET: mark_at_cool-tools.co.uk
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