Inseret records from one table to many (3 replies)

I have a table called t_csv.
csv_id category parent_category product generic
1 Unanai Unanai-parent Unanai-prod gen-1
2 Aqu Aqu-parent Aqu-prod gen-2
3 Afga Afga-parent Afga-prod gen-3
4 Indana Indana-parant Indana-prod gen-4
5 Tib Tib-parent Tib-prod gen-5

with the above csv file i want to insert into the following two table so that it looks like under:

t_pcategory
parent_id parent_category
1 Main
2 pc-22
3 Unanai-parent
4 Aqu-parent
5 Afga-parent
6 Indana-parant
7 Tib-parent


and
t_category
id category parent_category status
1 Ayurvedic Meds 1 Active
2 Pet Meds 1 Active
3 Best Seller 1 Active
4 Unanai 3+ Active
5 Aqu 4+ Active
6 Afga 5+ Active
7 Indana 6+ Active
8 Tib 7+ Active

I have been able to insert the data properly here is the code


$query = $this->db->query("
INSERT INTO t_pcategory (parent_category)
SELECT parent_category from t_csv where parent_category NOT IN (select parent_category from t_pcategory)
);



$query = $this->db->query("
INSERT INTO t_category (category)
SELECT category from t_csv where category NOT IN (select category from t_category)
); );

But it insert the category only and not the parent_category which should come
from t_pcategory parent_id which is unique and autogen
perhaps I could not join it properly

I short i am unable to insert these above values 3+ 4+ 5+ 6+ 7+ which is the main issue i try to do it in the following ways but could not get the result

insert into t_category (category, parent_category)
(select t1.category, t3.parent_id
from t_csv t1
left join t_category t2 on t1.category = t2.category
left join t_pcategory t3 on t1.parent_category = t3.parent_category
where t2.id is null and t3.parent_category is not null)

Please help