INSERT INTO sys_notice_read (notice_id, user_id, read_time) SELECT #{noticeId}, #{userId}, SYSDATE FROM DUAL WHERE NOT EXISTS ( SELECT 1 FROM sys_notice_read WHERE notice_id = #{noticeId} AND user_id = #{userId} ); select count(*) from sys_notice n where n.status = '0' and not exists (select 1 from sys_notice_read r where r.notice_id = n.notice_id and r.user_id = #{userId}) select count(*) from sys_notice_read where notice_id = #{noticeId} and user_id = #{userId} select n.notice_id as noticeId, n.notice_title as noticeTitle, n.notice_type as noticeType, n.status, n.create_by as createBy, n.create_time as createTime, case when r.notice_id is not null then true else false end as isRead from sys_notice n left join sys_notice_read r on r.notice_id = n.notice_id and r.user_id = #{userId} where n.status = '0' order by n.notice_id desc limit #{limit} insert ignore into sys_notice_read (notice_id, user_id, read_time) values (#{noticeId}, #{userId}, sysdate()) delete from sys_notice_read where notice_id in #{noticeId} select u.user_id as userId, u.user_name as userName, u.nick_name as nickName, d.dept_name as deptName, u.phonenumber as phonenumber, r.read_time as readTime from sys_notice_read r inner join sys_user u on u.user_id = r.user_id and u.del_flag = '0' left join sys_dept d on d.dept_id = u.dept_id where r.notice_id = #{noticeId} and ( u.user_name like concat('%', #{searchValue}, '%') or u.nick_name like concat('%', #{searchValue}, '%') ) order by r.read_time desc