update applet_announcement set is_del=1 where id=#{id}
delete from applet_announcement where id=#{id}
update applet_announcement
id = #{id},
sort = #{sort},
title = #{title},
abstracts = #{abstracts},
announcement = #{announcement},
announcement_text = #{announcement_text},
author = #{author},
reading_volume = #{reading_volume},
create_time = #{create_time}::timestamp,
is_del = #{is_del},
update_time = current_timestamp
where id = #{id}