select ci_id,wm_concat(stu_name)
FROM (select c.ci_id, s.stu_name
from pm_ci c, pm_stu s
where instr(c.stu_ids,s.stu_id)>0 )t
group by ci_id
FROM (select c.ci_id, s.stu_name
from pm_ci c, pm_stu s
where instr(c.stu_ids,s.stu_id)>0 )t
group by ci_id
2016-04-14