How to identify End of table or Record not found

manjuv26 · New User Joined: 19 Feb 2007 Posts: 9 Location: usa

Hi
How to identify whether we have reached end of table or record not found when the sql return code is +100. can any one help me.

Thanks
Manju

William Thompson · Posted: Thu Feb 22, 2007 5:08 am

manjuv26 · New User Joined: 19 Feb 2007 Posts: 9 Location: usa

Hi
Thanks for ur reply.But it is not clear for me. Actually this question asked in the interview. I need some more details information to identify whether it is a end of file or record not found.

wanderer · Posted: Thu Feb 22, 2007 10:53 am

As William has already said, they are logically same. You don't find a record when you reached the end of the table while searching. There is no way you can not-find-the-record without reaching the end of the table or your cursor set.

So how do you differentiate them? And what you mean by file?

UmeySan · Posted: Thu Feb 22, 2007 9:10 pm

Hi !

As wrote before:

If this is a FETCH statement, no more rows satisfy the selection values.
If this is an embedded SELECT statement, no rows satisfy the selection values.

That implies "End-of-File"

There is no special EOF-Indicator !!!

Regards, UmeySan

dick scherrer · Posted: Thu Feb 22, 2007 11:48 pm

Hello,

Keeping in mind that different code may be needed to deal with "No Record Found" versus "No more Records Found.

If there are "some" and then the last is processed, this is not the same as not finding "any" at all in many business situations.

It is one thing to have processed all of a customers orders - it is another if the customer has no orders or does not exist. . . .

UmeySan · Posted: Fri Feb 23, 2007 5:36 pm

Hi Dick !

I agree to your detailed handling on SQL-100.
It's individual and depends on internal logic.

Regards & nice Weekend
UmeySan