oracle 将游标中的数据合并为一个
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Union data from cursors into one
提问by ksogor
I have stored procedure which executes another stored procedure several times. I need union and return data, which I have after executing second procedure.
我有多次执行另一个存储过程的存储过程。我需要联合并返回数据，这是我在执行第二个程序后所拥有的。
Can I in some way union data from several cursors into one another cursor? It is possible without temporary tables or table-like datatype?
我可以以某种方式将多个游标中的数据合并到另一个游标中吗？没有临时表或类似表的数据类型是可能的吗？
EDIT: Cursor count for union actually is n (where n is 1, 2, 3, etc, detecting by another procedure).
编辑：联合的光标计数实际上是 n（其中 n 是 1、2、3 等，由另一个程序检测）。
For example:
例如：
CREATE OR REPLACE PROCEDURE proc_data
( data_out OUT SYS_REFCURSOR
) IS
BEGIN
OPEN data_out FOR SELECT '1' NUM FROM dual;
END;
/
CREATE OR REPLACE PROCEDURE proc_result
( data_out OUT SYS_REFCURSOR
) IS
data1 SYS_REFCURSOR;
data2 SYS_REFCURSOR;
BEGIN
PROC_DATA(data1);
PROC_DATA(data2);
-- select data1 and data2 into data_out - how?
END;
/
SET SERVEROUTPUT ON
DECLARE
data_out SYS_REFCURSOR;
temp_row VARCHAR2(10);
BEGIN
PROC_RESULT(data_out);
LOOP
FETCH data_out INTO temp_row;
EXIT WHEN data_out%NOTFOUND;
DBMS_OUTPUT.PUT_LINE(temp_row);
END LOOP;
CLOSE data_out;
END;
/
expected output:
预期输出：
---
1
1
采纳答案by andr
No, it's not possible. There's a nice discussionat AskTom regarding this question, take a look maybe some workarounds provided there can help you.
回答by vc 74
You can achieve this by creating a pipelined functionwhich will allow you to do
您可以通过创建一个流水线函数来实现这一点，该函数将允许您执行以下操作
select table(PROC_DATA(data1)) union table(PROC_DATA(data2))
