Query: Select  
                        avg(rw_overall) as rw_overall, 
                        avg(rw_technical) as rw_technical, 
                        avg(rw_features) as rw_features, 
                        avg(rw_price) as rw_price,        
                        avg(rw_reliability) as rw_reliability,
                        max(rw_id) as rw_id
                        From reviews 
                        Where p_id= And  main_cat_id=1 
                        Group by p_id<br />You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'And  main_cat_id=1 
                        Group by p_id' at line 9