insert into b_activity_user
activity_id,u_id,degree_of_match,status,#{activityId},#{uId},#{degreeOfMatch},#{status},
update b_activity_user
set status = 1
where u_id = #{req.userId}
and activity_id = #{req.activityId}
update b_activity_user
set status = 2
where u_id = #{req.userId}
and activity_id = #{req.activityId}
delete
from b_activity_user
where id = #{id}
delete
from b_activity_user
where activity_id = #{activityId}