I am 90% sure that you're problem is that the database connection is failing. This would result in your database handle being undefined. Invalid username/password combo, non-exitsent database, something like that. The fix is to change your first line to the following and examine the error message produced: 

my $db = new Win32::ODBC('user_logons')
 or die "db connect failed: $!";

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In reply to Re: win32::odbc/ SQL error by Coruscate
in thread win32::odbc/ SQL error by billie_t

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