}
###
+ # classnum
+ ###
+
+ my @classnum = grep /^(\d*)$/, @{ $params->{'classnum'} };
+ if ( @classnum ) {
+ push @where, '( '. join(' OR ', map {
+ $_ ? "cust_main.classnum = $_"
+ : "cust_main.classnum IS NULL"
+ }
+ @classnum
+ ).
+ ' )';
+ }
+
+ ###
# payby
###