Re: Sorting records in Physical and Logical files

["Charles Wilt" <charles.wilt@xxxxxxxxx>]

The only way to guarantee you'll get the data back in a given order is
to use the ORDER BY clause to specify the order you want.

Think about it, you've said you wanted all records, and don't care
about the order.  The quickest way to give you that is to sequentially
read the data right from the physical.

Why would the DB do extra work?

HTH,

Charles

On Thu, Aug 21, 2008 at 4:43 PM, Pete Helgren <Pete@xxxxxxxxxx> wrote:
> I thought I understood this but apparently I don't.
>
> I have a physical and logical file with the following specs:
>
>                            UNIQUE
> R FASA809                   TEXT('List Workfile')
> -------------------------------------------------------
> record layout here:
>  SLWID          6S 0       COLHDG('Absence ID')
>  SLW#           6S 0       COLHDG('Seq. Number')
>  SLWSN          9S 0       COLHDG('Sub SSN')
>
> K SLWID
> K SLW#
>
> The logical file looks like:
>
>                            UNIQUE
> R FASA809                   PFILE(PASA809)
>
> K SLWID
> K SLWSN
>
>
> The physical file has a randomly generated number in field SLW# and
> since the keys are SLWID and then SLW# in that order. I would expect the
> file to be ordered that way when I open it up in Query or a simple
> select with no ordering in SQL.  However, the file is always ordered in
> arrival sequence.  If I read through this file, I see the records in the
> order in which they were written in the file.  I *expected* them to be
> ordered by the key sequence.
>
> What did I miss or misunderstand?
>
> Thanks
>
> Pete
>
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