RE: workaround for odciaggregate bug?
Date: Wed, 28 Jan 2009 08:38:09 -0600
Message-ID: <7ED53A68952D3B4C9540B4EFA5C76E3605C3531A_at_CWYMSX04.Corp.Acxiom.net>
If I'm understanding this question correctly, and that's a big IF, I've done a hack for this that may help. I "adjusted" the type body code to allow a prefix surrounded by a special delimited, in my case "~". Anything inside that is used to help sort rows before aggregating them into a list, then the delimiters are removed.
Any example call would be: <function name>('~' || TO_CHAR(<numeric col for sorting>, '999') || '~' || <column/value for aggregated string>).
Here's what I added to the type:
...
FOR r IN (SELECT column_value FROM table (self.vals) ORDER BY 1) LOOP
/*
- It is assumed that any additional value used to sort the columns is surrounded
- by '~', so strip them off before returning the string. */ result := result || SUBSTR(r.column_value,1,INSTR(r.column_value,'~',1,1)-1) || SUBSTR(r.column_value,INSTR(r.column_value,'~',1,2)+1); END LOOP; RETURN ODCIConst.Success; ...
Hope that makes sense.
David C. Herring | DBA, Acxiom Automotive
630-944-4762 office | 630-430-5988 cell | 630-944-4989 fax 1501 Opus Pl | Downers Grove, IL, 60515 | U.S.A. | www.acxiom.com
-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Stauffer, Robert G
Sent: Tuesday, January 27, 2009 1:27 PM
To: Stephane Faroult
Cc: oracle-l_at_freelists.org
Subject: RE: workaround for odciaggregate bug?
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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