On my Microsoft Access database the following works: 
#Check for duplicate insert into database.
if ($dbh->errstr()=~/SQL-23000/)
    {
    $template->param(duplicate => 1);
    }

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If during debug, you set $dbh->{RaiseError} =1, your logs will show what errstr MySQL is throwing... checking for that (instead of SQL-23000 as in my case) should fix this issue...

2005-10-01 Retitled by Chady, as per Monastery guidelines

In reply to Re^2: Handling a Database Error by k_rajesh
in thread Handling a Database Error by kayak9630

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