Issues in inserting comma separated strings to table - oracle

Question

I have following 3 parameters from stored procedure
P_Param1 = 12
P_Paramj2= 'val:15,val:16'
P_param3 = 'Name:check values,Name:bv,Name:cv'
I have a table and need to insert above details and final table looks like below
proID CatID CatName
12 15 check values
12 15 bv
12 15 cv
12 16 check values
12 16 bv
12 16 cv
I have written a query to split P_param3 as below and getting splitted values but stuck in generating loops to make a table like above.
SELECT
regexp_substr('Name:check values,Name:bv,Name:cv', '(Name:)?(.*?)(,Name:|$)', 1, level, NULL,
2) AS "CatName"
FROM
dual
CONNECT BY
level <= regexp_count('Name:check values,Name:bv,Name:cv', 'Name:');

Answer 1

Split the catIds into rows and split the catNames into rows and then CROSS JOIN them and insert.
You can do it with simple (fast) string functions using:
CREATE PROCEDURE insertCats(
p_proid IN table_name.proid%TYPE,
p_catids IN VARCHAR2,
p_catnames IN VARCHAR2
)
IS
c_catid_prefix CONSTANT VARCHAR2(10) := 'val:';
c_catid_length CONSTANT PLS_INTEGER := LENGTH(c_catid_prefix);
c_catname_prefix CONSTANT VARCHAR2(10) := 'Name:';
c_catname_length CONSTANT PLS_INTEGER := LENGTH(c_catname_prefix);
BEGIN
INSERT INTO table_name (proid, catid, catname)
WITH catid_bounds (catids, spos, epos) AS (
SELECT p_catids,
1 + c_catid_length,
INSTR(p_catids, ',', 1 + c_catid_length)
FROM DUAL
UNION ALL
SELECT catids,
epos + 1 + c_catid_length,
INSTR(catids, ',', epos + 1 + c_catid_length)
FROM catid_bounds
WHERE epos > 0
),
catids (catid) AS (
SELECT CASE epos
WHEN 0
THEN SUBSTR(catids, spos)
ELSE SUBSTR(catids, spos, epos - spos)
END
FROM catid_bounds
),
catname_bounds (catnames, spos, epos) AS (
SELECT p_catnames,
1 + c_catname_length,
INSTR(p_catnames, ',', 1 + c_catname_length)
FROM DUAL
UNION ALL
SELECT catnames,
epos + 1 + c_catname_length,
INSTR(catnames, ',', epos + 1 + c_catname_length)
FROM catname_bounds
WHERE epos > 0
),
catnames (catname) AS (
SELECT CASE epos
WHEN 0
THEN SUBSTR(catnames, spos)
ELSE SUBSTR(catnames, spos, epos - spos)
END
FROM catname_bounds
)
SELECT p_proid,
i.catid,
n.catname
FROM catids i CROSS JOIN catnames n;
END;
/
db<>fiddle here