transfer table data when normalize tables in database

Question

i have a table like this:

Table1:(Have 400 record)

id    category_title       subcategory
----------------------------------------
1     title1               subTitle1.1
2     title1               subTitle1.2
3     title2               subTitle2.1
4     title2               subTitle2.2
5     title2               subTitle2.3

for normalize this table i want to create two table(Table2, Table3) and a relation between those instead of above table. (delete Table1 and create Table2 and Table3)like this:

Table2:

id   category_title
---------------
1     title1   
2     title2   
3     title3   
4     title4   

Table3:

id   subcategory     table2_id(FK)
----------------------------------------
1     title1              1
2     title2              1
3     title3              2
4     title4              1
5     title5              2

i can transfer Table1.category_title to Table2.category_title whit this query:

insert into Table2(category_title) (select distinct category_title from Tabe1)

and can transfer Table1.subcategory to Table3.subcategory with this query:

insert into Table3(subcategory) (select subcategory from Tabe1)

but who can fill Table3.table2_id(FK) with correct relation in Table2? (if i want do this with hand i should execute at least 200 query and i don't want do this)

anyone can give me a query or another way to transfer data between this tables? (apologize for my English) Thanks in advance

Answer 1

You could use these two INSERT queries, the second one with a JOIN:

INSERT INTO table2 (category_title)
SELECT DISTINCT category_title FROM table1;

INSERT INTO table3 (subcategory, table2_id)
SELECT DISTINCT subcategory, table2.id
FROM
  table1 INNER JOIN table2 ON table1.category_title=table2.category_title;

Please see fiddle here.

Answer 2

insert into table3 (subcategory, id) select distinct subcategory, id from table1

Not sure what does subTitle1.1 means in case each of them is different you have to put some text parsing function on this field.