- if ( $params->{'censustract'} =~ /^([.\d]+)$/ and $1 ) {
- push @where, "cust_main.censustract = '". $params->{censustract}. "'";
+ if ( exists($params->{'censustract'}) ) {
+ $params->{'censustract'} =~ /^([.\d]*)$/;
+ my $censustract = "cust_main.censustract = '$1'";
+ $censustract .= ' OR cust_main.censustract is NULL' unless $1;
+ push @where, "( $censustract )";