oracle pl/sql結果爲一個字符串

Question

我試圖創建一個簡單的存儲過程，將查詢結果存儲到一個字符串中。

v_string1 varchar2(100); 

Select column1 
From dual; 

將返回

column 1 
-------- 
aaaa 
bbbb 
cccc 

我想存儲「AAAA，BBBB，中交」進v_string1。 和所有我能想到的是一個光標... 有沒有更好的辦法處理這種

Answer 1

使用SQL Fiddle：

select LISTAGG(name, ',') WITHIN GROUP (ORDER BY 1) AS names 
from temp_table 

Answer 2

一還沒有選擇使用在Oracle 11G之前可以工作的純SQL，但字符串仍然限制爲4000個字符。

Select ltrim(max(names), ', ') as names 
From (
    Select sys_connect_by_path(name, ' ,') as names 
    From (
    Select name, row_number() over (order by name) as rown 
    From temp_table 
) 
    Start with rown = 1 
    Connect by rown = prior rown + 1 
)