Question

I have a little problem, I’d like to INSERT INTO myTable (id_product, id_tag) combined values

I know the method will be:

INSERT INTO myTable values (value1a, value1b),(value2a, value2b)

But problem is I have 934 products and 5 tags = 4670 combinations. So manually it will takes a ages to insert it! I know what id’s has a products:

SELECT id_product FROM prodTable

So can anybody direct me what I should do (procedures, functions – I newer used it before, until today?)

Answer 1

I think you need a cartesian join:

insert into myTable
select id_product, id_tag
from products, tags

SELECT will select all products id, combined with all tags id, and rows will be inserted in myTable.