How do you mean "having problems"?
If it is that you are returning a blank line, your 0 numerical value returned by count might be being printed as a null string. If that's the case, you can force it into a numerical context, for example by print $row[0]+0,"\n";
Update: To get better diagnostics on DBI's behaviors, I would highly recommend modifying your connect statement to the following:
my $dbh = DBI->connect("dbi:ODBC:$dsn",
{
PrintError => 1,
RaiseError => 0,
AutoCommit => 0
}
)
|| die "Couldn't open database";
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