ORACLE 存储过程怎么返回临时表结果集

Posted 2023-03-18

如题，我在ORACLE怎么返回一个临时表里的数据

MD,真TM麻烦，比SQLSERVER二多了。。。。

CREATE OR REPLACE PROCEDURE Report_Month_Responsibility(
o_cur OUT SYS_REFCURSOR
)
IS
STR VARCHAR2(200);
BEGIN

STR:=' CREATE GLOBAL TEMPORARY TABLE REPROTTEST(
ID INT,
ANAME VARCHAR2(20)
) ON COMMIT PRESERVE ROWS';

execute immediate STR;

STR:='INSERT INTO REPROTTEST(ID,ANAME) VALUES(1,''1'')';
execute immediate STR;

STR:='SELECT * FROM REPROTTEST';
OPEN o_cur FOR STR; -- 给游标变量赋值

END Report_Month_Responsibility;

上面是写的一个测试的，麻烦高手帮俺瞅瞅，看有没要改的地方，或者是测试会有什么问题，我测试好像报错了。。不知道怎么出来一个结果集。。。。。
SHEN的答案试过了，首先建的时候就过不去
select count(*) into tb_count from dba_tables where table_name='REPROTTEST';
这里会报错。。。。。
我把你的IF那段注释了，直接
STR:=' CREATE GLOBAL TEMPORARY TABLE REPROTTEST(
ID INT,
ANAME VARCHAR2(20)
) ON COMMIT PRESERVE ROWS';
execute immediate STR;

然后出去测试也会报错，ORA-01031: insufficient privileges

我刚做的，参考下：
SQL> CREATE GLOBAL TEMPORARY TABLE REPROTTEST(
2 ID NUMBER,
3 ANAME VARCHAR2(20)
4 ) ON COMMIT DELETE ROWS;（也可以用PRESERVER ROWS，看实际需求）

Table created

SQL> create or replace procedure report_month_responsibility(
2 o_cur out sys_refcursor)
3 as
4 begin
5 insert into reprottest(id,aname) values(1,'1');
6 open o_cur for select * from reprottest;
7 end report_month_responsibility;
8 /

Procedure created

SQL> set serverout on
SQL> declare
2 v_id number;
3 v_aname varchar2(20);
4 o_cur sys_refcursor;
5 begin
6 report_month_responsibility(o_cur);
7 fetch o_cur into v_id,v_aname;
8 while o_cur%found loop
9 dbms_output.put_line('输出结果：'||v_id||','||v_aname);
10 fetch o_cur into v_id,v_aname;
11 end loop;
12 commit;
13 end;
14 /

输出结果：1,1

PL/SQL procedure successfully completed

你的那个ORA-01031: insufficient privileges，是权限不足的问题。
SQL代码：

CREATE GLOBAL TEMPORARY TABLE REPROTTEST(
ID NUMBER,
ANAME VARCHAR2(20)
) ON COMMIT DELETE ROWS;

create or replace procedure report_month_responsibility(
o_cur out sys_refcursor)
as
begin
insert into reprottest(id,aname) values(1,'1');
open o_cur for select * from reprottest;
end report_month_responsibility;

declare
v_id number;
v_aname varchar2(20);
o_cur sys_refcursor;
begin
report_month_responsibility(o_cur);
fetch o_cur into v_id,v_aname;
while o_cur%found loop
dbms_output.put_line('输出结果：'||v_id||','||v_aname);
fetch o_cur into v_id,v_aname;
end loop;
commit;
end;
/ 参考技术A STR:=' CREATE GLOBAL TEMPORARY TABLE REPROTTEST(
ID INT,
ANAME VARCHAR2(20)
) ON COMMIT PRESERVE ROWS';

-------------------------------------------------------------------
这个是全局临时表,oracle下临时表在会话断时不会删除表定义的,仅是清掉记录罢啦(这个跟sql server是不同的).所以,你的大概可以改成这样:
CREATE OR REPLACE PROCEDURE Report_Month_Responsibility(
o_cur OUT SYS_REFCURSOR
)
IS
STR VARCHAR2(200);
tb_count INT;
BEGIN
--先判断全局临时表是否存在，没存在则重新建立：
select count(*) into tb_count from dba_tables where table_name='REPROTTEST';
if tb_count=0 then
STR:=' CREATE GLOBAL TEMPORARY TABLE REPROTTEST(
ID INT,
ANAME VARCHAR2(20)
) ON COMMIT PRESERVE ROWS';
execute immediate STR;
end if;

STR:='INSERT INTO REPROTTEST(ID,ANAME) VALUES(1,''1'')';
execute immediate STR;
COMMIT;
STR:='SELECT * FROM REPROTTEST';
OPEN o_cur FOR STR; -- 给游标变量赋值
END Report_Month_Responsibility;

/***********************************************************/
下面是调用存储过程并返回记录中每个字段值的调用示例:
declare
v_ID INT;
v_ANAME VARCHAR2(20);

--定义游标:
v_account_cur SYS_REFCURSOR;

begin
--调用存储过程：
Report_Month_Responsibility(v_account_cur);

fetch v_account_cur into v_ID,v_ANAME;
--用循环显示游标中的记录：
while v_account_cur%found loop
dbms_output.put_line('The value of column ID is: '||v_ID);--打引列ID
dbms_output.put_line('The value of column ANAME is: '||v_ANAME); --打引列ANAME
fetch v_account_cur into v_ID,v_ANAME;
end loop;
close v_account_cur;
execute immediate 'truncate TABLE REPROTTEST';
exception
when others then
dbms_output.put_line(sqlerrm);
end; 参考技术B ORA-01031: insufficient privileges
这个错是否你没有DBA权限或者是create any table的权限。
没用过临时表，不过永久表你这样写是OK的。 参考技术C 为什么用临时表，能用sql搞定的就用sql搞定