push @query_params, $params->{'borrowernumber'};
}
+ if ( exists $params->{'letter_code'} ) {
+ push @whereclauses, ' letter_code = ? ';
+ push @query_params, $params->{'letter_code'};
+ }
+
if ( @whereclauses ) {
$statement .= ' WHERE ' . join( 'AND', @whereclauses );
}