and error occured during this mysql query: <br />SELECT t2.`name` as category_name 
			FROM
				`product` t1
				LEFT JOIN `product_category` pc ON t1.`id` = pc.`product_id`
				LEFT JOIN `category` t2 ON pc.`category_id` = t2.`id`
				LEFT JOIN `category` t2_2 ON t2.`category_id` = t2_2.`id`
				LEFT JOIN `catalog` t5 ON t1.`catalog_id` = t5.`id`
				LEFT JOIN `product_prices_ranges` t6 ON t1.`id` = t6.`product_id`
				
			WHERE
				 (t1.`is_active` = "1") 
			GROUP BY t1.`id`
			<br /><br />Mysql error:<br>Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'a5012.t2.name' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by<br/><br />
<b>Warning</b>:  mysql_num_rows() expects parameter 1 to be resource, boolean given in <b>/web/htdocs5/dobrareklamacom/home/www/webapp/actions/products.action.php5</b> on line <b>389</b><br />
<span style="font-family: sans-serif;">SQL error <div style="border: 1px solid #CCC; margin: 15px; padding: 10px; font-family: courier new;">Expression #5 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'a5012.t2.name' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by</div> with query <div style="border: 1px solid #CCC; margin: 15px; padding: 10px; font-family: courier new;">SELECT
				t1.`id`,
				t1.`name`,
				t1.`model`,
				t1.`url`,
				t2.`name` as category_name, t2.`url` as category_url,
				t2_2.`name` as parent_category_name,
				t5.`name` as catalog_name, t5.`multiplayer` as catalog_multiplayer,
				(SELECT 
					IF(
						MIN(`price`) = -1,
						ROUND(MIN(`price`),2),
						ROUND(MIN(`price`)*t5.`multiplayer`,2)
					)
					FROM `product_prices_ranges` WHERE `product_id` = t1.`id`  AND `price` > 0) as minimal_price
				
			
			FROM
				`product` t1
				LEFT JOIN `product_category` pc ON t1.`id` = pc.`product_id`
				LEFT JOIN `category` t2 ON pc.`category_id` = t2.`id`
				LEFT JOIN `category` t2_2 ON t2.`category_id` = t2_2.`id`
				LEFT JOIN `catalog` t5 ON t1.`catalog_id` = t5.`id`
				LEFT JOIN `product_prices_ranges` t6 ON t1.`id` = t6.`product_id`
				
			WHERE
				 (t1.`is_active` = "1") 
			GROUP BY t1.`id`
			ORDER BY  t1.`is_promote` DESC, t1.`sort` DESC, t1.`name` ASC  LIMIT 0,15</div></span>