with temp as(
select 'China' nation ,'Guangzhou' city from dual union all
select 'China' nation ,'Shanghai' city from dual union all
select 'China' nation ,'Beijing' city from dual union all
select 'USA' nation ,'New York' city from dual union all
select 'USA' nation ,'Bostom' city from dual union all
select 'Japan' nation ,'Tokyo' city from dual
)
select nation,listagg(city,',') within GROUP (order by city)
from temp
group by nation
这是最基础的用法：
LISTAGG(XXX,XXX) WITHIN GROUP( ORDER BY XXX)
用法就像聚合函数一样，通过Group by语句，把每个Group的一个字段，拼接起来。
实战sql：
select listagg(t.SPURIOUS_DESC, ';') within GROUP(order by t.spurious_desc) SPURIOUS_DESC
from zc_tr_appraise t
where t.banknote_id = '1';