1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') and p2c.categories_id = cd.categories_id and cd.language_id ='1' group by p2c.' at line 1

select p2c.categories_id, cd.categories_name from products_to_categories p2c, categories_description cd where p2c.products_id in () and p2c.categories_id = cd.categories_id and cd.language_id ='1' group by p2c.categories_id order by p2c.categories_id

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