1054 - Unknown column '_57' in 'where clause'

SELECT pd.products_name, p.*, cd.categories_name as category_name FROM products AS p LEFT JOIN products_description AS pd ON p.products_id = pd.products_id LEFT JOIN products_to_categories as pc ON pc.products_id = p.products_id LEFT JOIN categories as c ON pc.categories_id = c.categories_id LEFT JOIN categories_description as cd ON cd.categories_id = c.categories_id WHERE p.products_id = _57

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