need to get the output of 2 cursors in one temp table - sql

Question

Here is my first procedure (sample)
CREATE OR REPLACE PROCEDURE GPTOWNER_CORP_AMF.testt1
AS
po_status VARCHAR2(100);
po_cur_1 SYS_REFCURSOR;
po_cur_2 SYS_REFCURSOR;
BEGIN
OPEN po_cur_1 FOR
select app_var_row_seq,app_var_name,app_var_value,app_var_description,r_date
from TMP_PMT_APP_VARIABLES_REF
where ROWNUM < 5;
OPEN po_cur_2 FOR
select config_to_lob_row_seq,config_row_seq,lobref_row_seq,r_date
from TMP_PMT_CONFIG_TO_LOB_DAT
where ROWNUM < 6;
TESTT2(po_cur_1,po_cur_2,po_status);
DBMS_output.put_line(po_status);
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE(SQLERRM||SQLCODE);
END;
Here is my second procedure (sample)
CREATE OR REPLACE procedure GPTOWNER_CORP_AMF.testt2 (pi_cur_1 IN sys_refcursor, pi_cur_2 IN sys_refcursor,po_status OUT VARCHAR2)
AS
app_var_row_seq NUMBER;
app_var_name VARCHAR2(100);
app_var_value VARCHAR2(1000);
app_var_description VARCHAR2(1000);
r_date1 DATE;
config_to_lob_row_seq NUMBER;
config_row_seq VARCHAR2(100);
lobref_row_seq NUMBER;
r_date2 DATE;
BEGIN
LOOP
FETCH pi_cur_1 into app_var_row_seq,app_var_name,app_var_value,app_var_description,r_date1;
FETCH pi_cur_2 into config_to_lob_row_seq,config_row_seq,lobref_row_seq,r_date2;
EXIT WHEN (pi_cur_2%NOTFOUND AND pi_cur_1%NOTFOUND ) ;
INSERT INTO testt1testt2 (colid,col1,col2,col3,col4,col5,col6,col7,col8,col9)
VALUES(colid.nextval,app_var_row_seq,app_var_name,app_var_value,app_var_description,r_date1,config_to_lob_row_seq,config_row_seq,lobref_row_seq,r_date2);
END LOOP;
DBMS_OUTPUT.PUT_LINE ('rows inserted:' || pi_cur_1%ROWCOUNT || 'and' || pi_cur_2%ROWCOUNT);
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE(SQLERRM||SQLCODE);
END;
My problem statement is that from first procedure I am getting two refcursor as output and in the second procedure I am trying to read them and put them into a temp table which will be used by another procedure. Cant union the two select statements as they are having different set of output. Is there any better mechanism to do so , as by my approach I am facing issue as when I run the first procedure (say first select return 4 row and second select return 6 rows) the need is that 6 rows would be inserted into temp table but the columns that are read from first select will be inserted as NULL when there is now row fetched , but in my case duplicate row is getting inserted. Any help would be appreciated. And do post if anyone needs more info on the same.

Answer 1

If I understand you right, then you don't really need to union them - but join them.
Since there is no really relation between the 2 tables and you want nulls in "both side"s you need to full outer join them.
I will not ask you, why you want them both on the same temp table if there is no relation between them. But if you do this why not just use an insert-select ?
INSERT INTO testt1testt2 (colid,col1,col2,col3,col4,col5,col6,col7,col8,col9)
SELECT colid.nextval, app_var_row_seq,app_var_name,app_var_value,app_var_description, t1.r_date,
config_to_lob_row_seq,config_row_seq,lobref_row_seq, t2.r_date
FROM (select app_var_row_seq,app_var_name,app_var_value,app_var_description,r_date
from TMP_PMT_APP_VARIABLES_REF
where ROWNUM < 5) t1
FULL OUTER JOIN (select config_to_lob_row_seq,config_row_seq,lobref_row_seq,r_date
from TMP_PMT_CONFIG_TO_LOB_DAT
where ROWNUM < 6) t2 on 1=2
UPDATE:
If the requirement is to get 2 refcursors, then my approach isn't relevant...
What you can do though, is have 2 insert commands one like this:
INSERT INTO testt1testt2 (colid,col1,col2,col3,col4,col5,col6,col7,col8,col9)
VALUES (colid.nextval,app_var_row_seq,app_var_name,app_var_value,app_var_descript‌​ion,r_date1,null,null,null,null);
and the other like:
INSERT INTO testt1testt2 (colid,col1,col2,col3,col4,col5,col6,col7,col8,col9)
VALUES (colid.nextval,null,null,null,null,null,config_to_lob_row_seq,config_row_s‌​eq,lobref_row_seq,r_date2);
If you really want to do it nicely, you can use bulk insert for performance, see example here