+=item sum_cdrs
+
+Takes the same options as psearch_cdrs, but returns a single row containing
+"count" (the number of CDRs) and the sums of the following fields: duration,
+billsec, rated_price, rated_seconds, rated_minutes.
+
+Note that if any calls are not rated, their rated_* fields will be null.
+If you want to use those fields, pass the 'status' option to limit to
+calls that have been rated. This is intentional; please don't "fix" it.
+
+=cut
+
+sub sum_cdrs {
+ my $self = shift;
+ my $psearch = $self->psearch_cdrs(@_);
+ $psearch->{query}->{'select'} = join(',',
+ 'COUNT(*) AS count',
+ map { "SUM($_) AS $_" }
+ qw(duration billsec rated_price rated_seconds rated_minutes)
+ );
+ # hack
+ $psearch->{query}->{'extra_sql'} =~ s/ ORDER BY.*$//;
+ qsearchs ( $psearch->{query} );
+}
+