- my $extra_sql = "WHERE taxproductnum IS NOT NULL OR ".
- "0 < ( SELECT count(*) from part_pkg_option WHERE ".
- " part_pkg_option.pkgpart = part_pkg.pkgpart AND ".
- " optionname LIKE 'usage_taxproductnum_%' AND ".
- " optionvalue != '' )";
+ my $extra_sql = "
+ WHERE taxproductnum IS NOT NULL
+ OR EXISTS ( SELECT 1 from part_pkg_option
+ WHERE part_pkg_option.pkgpart = part_pkg.pkgpart
+ AND optionname LIKE 'usage_taxproductnum_%'
+ AND optionvalue != ''
+ )
+ ";