1054 Unknown column 'p.product_is_hidden_sample' in 'where clause'
in:
[select distinct m.manufacturers_id as id, m.manufacturers_name as name from products p, products_to_categories p2c, manufacturers m where p.products_status = 1 and p.product_is_hidden_sample = 0 and p.manufacturers_id = m.manufacturers_id and p.products_id = p2c.products_id and p2c.categories_id = '0' order by m.manufacturers_name]