我有一个我在一个应用程序中使用的查询,我很难在PL / SQL中使用
标签。查询是:
SELECT LISTAGG(last_name, 'br') WITHIN group (ORDER BY last_name)
into lastname from employees;
DBMS_OUTPUT.PUT_LINE(lastname);
我得到的输出是:Abel br Ande br Baer br
我想要的输出:
亚伯·安德
贝尔
答案 0 :(得分:2)
“br”在Oracle中没有特殊含义,我知道,使用CHR(10)(即回车)。 (或者如果在Windows中工作,则为CHR(10)+ CHR(13))
1 with w_data as ( select level id from dual connect by level <= 10 )
2 select listagg ( id, chr(10) ) within group (order by id )
3* from w_data
SQL> /
LISTAGG(ID,CHR(10))WITHINGROUP(ORDERBYID)
--------------------------------------------------------------------------------
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1 row selected.
注意它是如何显示“选择1行”的,但事情被分成了单独的行......我相信这是你所追求的效果?
[编辑]抱歉,刚刚意识到你在pl / sql ..这里是pl / sql中相同的测试查询,通过dbms_output ...:
declare
lv_str varchar2(4000);
begin
with w_data as ( select level id from dual connect by level <= 10 )
select listagg ( id, chr(10) ) within group (order by id )
into lv_str
from w_data;
dbms_output.put_line ( lv_str );
end;
/
"gg.sql" 15 lines, 259 characters
SQL> @gg
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PL/SQL procedure successfully completed.