[SQL SERVER] Aiuto su una select

[deadpool83]

Certo,
posto la soluzione:

				sql = 	" SELECT category_tbl.category_name, "&_
						" COUNT(category_tbl.category_name) AS conta "&_
						" FROM category_tbl "&_
						" LEFT JOIN products_tbl "&_
						" ON "&_
						" category_tbl.category_name = products_tbl.category_name "&_
						" LEFT JOIN sell_tbl "&_
						" ON "&_
						" products_tbl.prod_id = sell_tbl.prod_id "&_
						" GROUP BY category_tbl.category_name"