select msg_id, type, desc, create_time from tb_user_msg and type = #{type} and desc = #{desc} where msg_id = #{msgId} insert into tb_user_msg type, desc, create_time, #{type}, #{desc}, #{createTime}, update tb_user_msg type = #{type}, desc = #{desc}, create_time = #{createTime}, where msg_id = #{msgId} delete from tb_user_msg where msg_id = #{msgId} delete from tb_user_msg where msg_id in #{msgId}