my $addl_from = 'LEFT JOIN cust_main USING ( custnum ) '.
'LEFT JOIN part_pkg USING ( pkgpart ) '.
- 'LEFT JOIN pkg_class USING ( classnum ) ';
+ 'LEFT JOIN pkg_class ON ( part_pkg.classnum = pkg_class.classnum ) ';
my $count_query = "SELECT COUNT(*) FROM cust_pkg $addl_from $extra_sql";