Oracle多行数据合并一行.sql

--Oracle多行数据合并一行.sql

--1.

CREATE TYPE NUMBER_LIST_T AS TABLE OF varchar2(50);

--2.

CREATE OR REPLACE FUNCTION CONCAT_LIST (

lst IN number_list_t, separator varchar2

)

RETURN VARCHAR2 IS

ret varchar2(2000);

BEGIN

FOR j IN 1..lst.LAST LOOP

ret := ret || separator || lst(j);

END LOOP;

RETURN ret;

END;

--3.

CREATE OR REPLACE FUNCTION getUserRoles (

userid in varchar2

)

RETURN VARCHAR2 IS

rtl varchar2(2000);

BEGIN

SELECT Substr(CONCAT_LIST(LST, ','),2) into rtl from (

SELECT

CAST(MULTISET(

SELECT trim(f_name) AS f_name FROM

(select u.userid as f_id,r.rolename as f_name from base_role r, base_user_roles u where r.roleid=u.roleid) e

WHERE e.f_id=m.f_id )

AS number_list_t) LST

FROM

(select u.userid as f_id,r.rolename as f_name from base_role r, base_user_roles u where r.roleid=u.roleid) m

where m.f_id = userid

group by m.f_id

);

return(rtl);

END;

--select u.*, getUserRoles(u.userid) from base_user u