I'm using a Sybase driver, but only through
DBI->connect("dbi:Sybase:server=..." ... ). I'm not using the DBD package at
all, at least not directly.
Thanks very much for your help!! I have a feeling the information you
gave me will bear fruit!!
-Joe Melillo
joseph.meli...@moodys.com
-----Original Message-----
From: Martin J. Evans [mailto:martin.ev...@easysoft.com]
Sent: Friday, February 03, 2012 3:32 AM
To: Melillo, Joseph
Cc: dbi-users@perl.org
Subject: Re: Multiple Result Sets In A select Statement In Sybase
On 02/02/12 21:40, Melillo, Joseph wrote:
> Hi,
>
> I've looked at every resource I can find to try and find this out for
> myself, but I couldn't. Therefore, I apologize if this is too simple
> a question. If it is, I'd appreciate a pointer to the appropriate
> documentation where I can read further.
>
> Anyway, in Sybase, one can write a store procedure with more than one
> select statement in it. As a result, the stored procedure returns
> more than one result set (i.e. one per select statement). I'm trying
> to handle this in my script (Perl 5.8.8), but the loop terminates
> when all the rows of the first result set have been fetched,
> indicating that a call needs to be made to go to the next result
> set.
In ODBC, you'd call the SQLMoreResults API at this point and it would tell you
if there was another result-set and you can restart your fetch if there is.
> There was a way to handle this in Sybase::DBlib ($dbh->dbresults).
> Also, using $dbh->nsql() returned all the result sets in an array of
> hashrefs, with the keys of the hashref representing the different
> fields of the different result sets, thus eliminating the need to
> switch from result set to result set. Even if $sth->fetchall_hashref
> in DBI performs similarly to $dbh->nsql() in Sybase::DBlib, I'd
> rather fetch my rows one at a time.
>
> Is there an equivalent of $dbh->dbresults in DBI?
Not in DBI itself but there is in some DBDs. DBD::ODBC has odbc_more_results
method and DBD::Sybase does it by adding an empty row at the end of the
result-set and setting syb_more_results. If you are using DBD::Sybase search
for "Handling Multiple Result Sets" in the pod.
You haven't said which DBD you are using so it is difficult to say.
> Thanks in advance for any help you can give me!
>
> -Joe Melillo joseph.meli...@moodys.com
Martin
--
Martin J. Evans
Easysoft Limited
http://www.easysoft.com
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