SELECT o.notice_id, o.notice_user_id, o.user_id, o.STATUS, o.create_by, o.create_time, o.update_by, o.update_time, o.remark, u.nick_name FROM sys_notice_user o left join sys_user u on u.user_id=o.user_id where o.notice_user_id = #{noticeUserId} AND o.notice_id = #{noticeId} AND o.user_id = #{userId} insert into sys_notice_user ( notice_id, notice_user_id, user_id, status, remark, create_by, create_time )values( #{noticeId}, #{noticeUserId}, #{userId}, #{status}, #{remark}, #{createBy}, sysdate() ) update sys_notice_user notice_id = #{noticeId}, notice_user_id = #{noticeUserId}, user_id = #{userId}, status = #{status}, update_by = #{updateBy}, update_time = sysdate() where notice_user_id = #{noticeId} delete from sys_notice_user where notice_user_id = #{noticeUserId} delete from sys_notice_user where notice_user_id in #{noticeUserId} select user_id from sys_notice_user where notice_id = #{noticeId} and user_id in #{id} ; INSERT INTO sys_notice_user (notice_id, user_id,create_time,create_by,status) VALUES (#{item.noticeId}, #{item.userId},#{item.createTime},#{item.createBy},#{item.status}) select n.*,u.`status` 'readStatus',u.notice_user_id from sys_notice_user u LEFT JOIN sys_notice n on n.notice_id=u.notice_id AND u.notice_id = #{noticeId} AND u.user_id = #{userId} AND u.status = #{status}