select id, file_name, file_address, create_time, create_by, update_time, update_by from dc_file_download insert into dc_file_download file_name, file_address, create_time, create_by, update_time, update_by, #{fileName}, #{fileAddress}, #{createTime}, #{createBy}, #{updateTime}, #{updateBy}, update dc_file_download file_name = #{fileName}, file_address = #{fileAddress}, create_time = #{createTime}, create_by = #{createBy}, update_time = #{updateTime}, update_by = #{updateBy}, where id = #{id} delete from dc_file_download where id = #{id} delete from dc_file_download where id in #{id}