A list of say 15 products with their respective internal reference.

This list is a text file (csv for instance)

How to pass the file to the odoo db search functions?

The db contains around 80 000 products

objective is to avoid creating duplicates (at order time or receiving from suppliers).

my odoo 12.3 Enterprise Saas mode

Thks for any direction or +

Regards to all of us and take care!