RE: workaround for odciaggregate bug?

From: Stauffer, Robert G <rstauffer_at_decommunications.com>
Date: Tue, 27 Jan 2009 14:27:04 -0500
Message-ID: <DBD57944BD147146A3FA5E66983322E4088C3A77_at_CL-EXCHANGE1.dande.com>

Stephane,

Thanks. Your query does the trick.

And, true, it doesn't make sense to expect the row ordering to work - especially since ODCIAggregate seems to have been targeted at numeric aggregation.

Thanks to Ian, Mark, and Charles for your help, too.

Bob Stauffer
DBA
D&E Communications
Ephrata, PA
rstauffer_at_decommunications.com
717-738-8737
-----Original Message-----
From: Stephane Faroult [mailto:sfaroult_at_roughsea.com] Sent: Friday, January 23, 2009 17:26
To: Stauffer, Robert G
Cc: oracle-l_at_freelists.org
Subject: Re: workaround for odciaggregate bug?

Robert,

    I'm not sure it really qualifies as a bug, because row ordering is something that has no meaning in the relational theory, and therefore Oracle is free to return rows in whichever order it wants - only the final "order by" counts.
But there is another solution than stringAgg, and this one works "by design":

SQL> select acctnbr,
  2 replace(path, '|', '') result   3 from (select acctnbr,

  4            sys_connect_by_path(prodcount, '|') path,
  5            rn,
  6            cnt
  7         from (select acctnbr,
  8              prodcount,
  9              row_number() over (partition by acctnbr
 10                         order by snapshotdate) rn,
 11              count(snapshotdate) over (partition by acctnbr) cnt
 12           from testtable)
 13         connect by acctnbr = prior acctnbr
 14            and rn = 1 + prior rn
 15         start with rn = 1)

 16 where rn = cnt
 17 order by acctnbr
 18 /

ACCTNBR RESULT

---------- --------------------

0123456789 010203

HTH S. Faroult

Stauffer, Robert G wrote:
> All,
>
> 9.2.0.7 and 10.1.0.4 on AIX 5.2
>
> I'm trying to use ODCIAggregate and Tom Kyte's stringAgg function to
> concatenate a number in multiple rows into a string. Below is the
> output of the select statements I ran. Create scripts for the table,
> type, and function are below the output. I'm expecting the returned
> string to be '010203' but it returns '010032'. Unfortunately, it
looks
> like there's a bug (7194959 to be fixed in 11.2) in ODCIAggregate that
> "unsorts" the sorted data when it creates the concatenated string.
I've
> looked around (asktom, metalink, etc.) and can't seem to find a
> work-around for this method. Has anyone come up with one?
>

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Received on Tue Jan 27 2009 - 13:27:04 CST