Mysql Error: SELECT SQL_CALC_FOUND_ROWS prod.*, MIN( price ) AS minPrice, MAX( price ) AS maxPrice FROM pt_products prod  WHERE category IN ('137', '171', '172', '175', '173', '174')   GROUP BY dupe_hash ORDER BY  prod.clicks/(DATEDIFF(NOW(),prod.add_date)+1) desc LIMIT 42,21<br>Disk full (/var/tmp/#sql_6fe_0); waiting for someone to free some space...