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List:       msql-mysql-modules
Subject:    Re: Trying to get the last inserted ID
From:       Michael R Boudreau <mboudreau () press ! uchicago ! edu>
Date:       2009-03-31 16:26:45
Message-ID: C5F7AE75.17EB4%mboudrea () ad ! uchicago ! edu
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According to "Programming the Perl DBI" (O'Reilly 2000), the syntax varies depending \
on your version of DBD::mysql:

If you used a prepare/execute:

$sth->{mysql_insertid}  (1.21_xx)
$sth->{insertid} (1.20_xx)

If you used $dbh->do:

$dbh->{mysql_insertid}  (1.21_xx)
$dbh->do("SELECT LAST_INSERT_ID()")  (1.20_xx)


On 3/31/09 10:49 AM, "Vance E. Neff" <veneff@intouchmi.com> wrote:

Hello,

I have inserted a new row into a table that has an auto incrementing key.

For some reason, I don't seem to be able to retrieve it after it is created.
I tried these two statements:
$LoginID = $dbh->last_insert_id( "", "", "Logins", "LoginID" );
and
$LoginID = $dbh->{'mysql_insertid'};

in both cases, $LoginID comes back undefined.
I tried before the COMMIT and after with the same results.  Note that
auto commit is currently turned on, so my commits should have anything
to do with anything.

What am I doing wrong?

Note that I have verified that the key is being created with the
expected values.

Vance



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Michael R. Boudreau
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