select id,equipment_name,equipment_type,equipment_time,retirement_time,mark from t_equipment where id > 1 select count(1) from t_equipment where id > 1 insert into t_equipment (equipment_type) SELECT #{equ.equipment_type} FROM DUAL WHERE NOT EXISTS (SELECT equipment_type FROM t_equipment WHERE equipment_type = #{equ.equipment_type}) select id,equipment_name,equipment_type, equipment_time, retirement_time,mark from t_equipment where equipment_type like #{name}