Can not run sql query [code: 003]
SQL:
SELECT
drugs.name as drug_name,
categories.name as category_name,
categories.name_cn,
categories.popular as cat_popular
FROM
drugs, categories, cat_relations
WHERE
drugs.id_drug = cat_relations.id_drug
AND
categories.id_category = cat_relations.id_category
AND
categories.visible = 1
AND
cat_relations.visible = 1
ORDER BY
categories.num,
cat_relations.num
;