Rewrite Oracle PL/SQL procedure without merge - oracle

Question

I need to rewrite the below procedure without merge.
So basically the insert/update needs to be done without merge, any other alternative if possible.
Database is Oracle12c/12.1
CREATE OR REPLACE PROCEDURE PUSH_DATA(p_id NUMBER) IS
BEGIN
MERGE INTO push_data_temp tgt
USING(
with rcte (id, data, lvl, result)
as (
select id, data, 1,
regexp_substr(data,
'("[^"]*"|[^, "]+)', 1, 1, null, 1) result
from disp_data where id=p_id
union all
select id, data, lvl + 1,
regexp_substr(data, '("[^"]*"|[^, "]+)', 1, lvl + 1, null, 1)
from rcte
where lvl <= regexp_count(data, '("[^"]*"|[^, "]+)')
)
select *
from (
select id, lvl, replace(result,'""','') as result
from rcte
)
pivot (max(result)
FOR (lvl) IN(1 AS col1
,2 AS col2
,3 AS col3
,4 AS col4
,5 AS col5
,6 AS col6
,7 AS col7
,8 AS col8
,9 AS col9
,10 AS col10
,11 AS col11
,12 AS col12))
) src
ON (src.id = tgt.id)
WHEN MATCHED THEN UPDATE
SET col1 = src.col1
, col2 = src.col2
, col3 = src.col3
, col4 = src.col4
, col5 = src.col5
, col6 = src.col6
, col7 = src.col7
, col8 = src.col8
, col9 = src.col9
, col10 = src.col10
, col11 = src.col11
, col12 = src.col12
WHEN NOT MATCHED THEN
INSERT (id, col1, col2, col3, col4, col5, col6, col7, col8, col9, col10, col11, col12)
VALUES (src.id, src.col1, src.col2,src.col3,src.col4,src.col5,
src.col6,src.col7,src.col8,src.col9,src.col10,src.col11,src.col12);
END;
/
#sujitmohanty had helped me with the procedure.

Answer 1

I have modified the procedure to use normal loop over merge. Keep in mind to change to merge later as it is the best option for insert/update operations as in your case.
I made the procedure parameter to optional, if you pass an pid it will do insert/update for the particular pid or else just pass null and it will do for all.
Note: For huge data you may need to rethink on using bulk collect operation to do the insert or update ( if only required)
CREATE OR REPLACE PROCEDURE PUSH_DATA(p_id NUMBER) IS
CURSOR cur_data IS
WITH rcte (id, data, lvl, result)
AS (
SELECT id, data, 1,
regexp_substr(data,
'("[^"]*"|[^, "]+)', 1, 1, null, 1) result
FROM disp_data where id=coalesce(p_id,id)
UNION ALL
SELECT id, data, lvl + 1,
regexp_substr(data, '("[^"]*"|[^, "]+)', 1, lvl + 1, null, 1)
FROM rcte
WHERE lvl <= regexp_count(data, '("[^"]*"|[^, "]+)')
)
SELECT *
FROM (SELECT id, lvl, replace(result,'""','') as result
FROM rcte)
PIVOT (MAX(result)
FOR (lvl) IN(1 AS col1
,2 AS col2
,3 AS col3
,4 AS col4
,5 AS col5
,6 AS col6
,7 AS col7
,8 AS col8
,9 AS col9
,10 AS col10
,11 AS col11
,12 AS col12));
var cur_data%ROWTYPE;
BEGIN
OPEN cur_data;
LOOP
FETCH cur_data INTO var;
EXIT WHEN cur_data%NOTFOUND;
UPDATE push_data_temp
SET col1 = var.col1
, col2 = var.col2
, col3 = var.col3
, col4 = var.col4
, col5 = var.col5
, col6 = var.col6
, col7 = var.col7
, col8 = var.col8
, col9 = var.col9
, col10 = var.col10
, col11 = var.col11
, col12 = var.col12
WHERE ID = var.id;
IF SQL%ROWCOUNT = 0
THEN
INSERT INTO push_data_temp(id, col1, col2, col3, col4, col5,
col6, col7, col8, col9, col10, col11, col12)
VALUES (var.id, var.col1, var.col2,var.col3,var.col4,var.col5,
var.col6,var.col7,var.col8,var.col9,var.col10,var.col11,var.col12);
END IF;
END LOOP;
END;
/
Test:-
BEGIN
push_data(p_id=>null);
END;
/
Finally Dbfiddle