Mysql insert not working properly

[eluser]vitoco[/eluser]
The query it's wrong :
This :

Code:

INSERT INTO `product_category` (`prduct_id`, `category_id`) VALUES ('102,102', '1,5')

Must be like this :

Code:

INSERT INTO `product_category` (`prduct_id`, `category_id`) VALUES
('102' , '102'),
('1','5')

Each record inside parenthesis ( and joined by comma to the previous one ) , and each value of that record, separated by comma also

Saludos