select msg_id, live_id,user_id, nick_name, avatar, msg, create_time, create_by, update_by, update_time, remark from live_msg and live_id = #{liveId} and user_id = #{userId} and msg = #{msg} order by create_time desc select lm.msg_id, lm.live_id,lm.user_id, lm.nick_name, lm.avatar, lm.msg, lm.create_time, lm.create_by, lm.update_by, lm.update_time, lm.remark,lwu.single_visible from live_msg lm left join live_watch_user lwu on lwu.user_id = lm.user_id and lm.live_id = #{liveId} and lm.user_id = #{userId} and lm.msg = #{msg} order by create_time desc where msg_id = #{msgId} order by create_time desc where msg_id = #{msgId} and company_id = #{companyId} and company_user_id = #{companyUserId} order by create_time desc insert into live_msg live_id, user_id, nick_name, msg, create_time, create_by, update_by, update_time, remark, live_flag, replay_flag, #{liveId}, #{userId}, #{nickName}, #{msg}, #{createTime}, #{createBy}, #{updateBy}, #{updateTime}, #{remark}, #{liveFlag}, #{replayFlag}, update live_msg live_id = #{liveId}, user_id = #{userId}, nick_name = #{nickName}, msg = #{msg}, create_time = #{createTime}, create_by = #{createBy}, update_by = #{updateBy}, update_time = #{updateTime}, remark = #{remark}, where msg_id = #{msgId} delete from live_msg where msg_id = #{msgId} delete from live_msg where msg_id in #{msgId}