+=head1 CLASS METHODS
+
+=over 4
+
+=item recurring_sql
+
+Returns an SQL expression identifying recurring packages.
+
+=cut
+
+sub recurring_sql { "
+ '0' != ( select freq from part_pkg
+ where cust_pkg.pkgpart = part_pkg.pkgpart )
+"; }
+
+=item onetime_sql
+
+Returns an SQL expression identifying one-time packages.
+
+=cut
+
+sub onetime_sql { "
+ '0' = ( select freq from part_pkg
+ where cust_pkg.pkgpart = part_pkg.pkgpart )
+"; }
+
+=item active_sql
+
+Returns an SQL expression identifying active packages.
+
+=cut
+
+sub active_sql { "
+ ". $_[0]->recurring_sql(). "
+ AND ( cust_pkg.cancel IS NULL OR cust_pkg.cancel = 0 )
+ AND ( cust_pkg.susp IS NULL OR cust_pkg.susp = 0 )
+"; }
+
+=item inactive_sql
+
+Returns an SQL expression identifying inactive packages (one-time packages
+that are otherwise unsuspended/uncancelled).
+
+=cut
+
+sub inactive_sql { "
+ ". $_[0]->onetime_sql(). "
+ AND ( cust_pkg.cancel IS NULL OR cust_pkg.cancel = 0 )
+ AND ( cust_pkg.susp IS NULL OR cust_pkg.susp = 0 )
+"; }
+
+=item susp_sql
+=item suspended_sql
+
+Returns an SQL expression identifying suspended packages.
+
+=cut
+
+sub suspended_sql { susp_sql(@_); }
+sub susp_sql {
+ #$_[0]->recurring_sql(). ' AND '.
+ "
+ ( cust_pkg.cancel IS NULL OR cust_pkg.cancel = 0 )
+ AND cust_pkg.susp IS NOT NULL AND cust_pkg.susp != 0
+ ";
+}
+
+=item cancel_sql
+=item cancelled_sql
+
+Returns an SQL exprression identifying cancelled packages.
+
+=cut
+
+sub cancelled_sql { cancel_sql(@_); }
+sub cancel_sql {
+ #$_[0]->recurring_sql(). ' AND '.
+ "cust_pkg.cancel IS NOT NULL AND cust_pkg.cancel != 0";
+}
+