160519、Oracle中將查詢出的多條記錄的某個字段拼接成一個字符串的方法

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 

這是最基礎的用法：
LISTAGG(XXX,XXX) WITHIN GROUP( ORDER BY XXX)

用法就像聚合函數一樣，通過Group by語句，把每個Group的一個字段，拼接起來。

實戰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';