What are the code and description of the most frequent behavior incident type?
create table ref_incident_type (incident_type_description varchar, incident_type_code varchar, PRIMARY KEY (incident_type_description)); create table behavior_incident (incident_type_code varchar, PRIMARY KEY (incident_type_code))
select t1.incident_type_code, t2.incident_type_description from behavior_incident as t1 join ref_incident_type as t2 on t1.incident_type_code = t2.incident_type_code group by t1.incident_type_code order by count(*) desc limit 1