1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '65\') limit 1' at line 5
[select p2c.categories_id, p.master_categories_id
from products p, products_to_categories p2c
where p.products_id = '266'
and p.products_id = p2c.products_id
and (p.master_categories_id = '65\' or p2c.categories_id='65\') limit 1]