例：SELECT @row := @row + 1 as row, t.* FROM some_table t, (SELECT @row := 0) r
例：SELECT @row := @row +1 AS ROW , t.pro_name, t.place FROM mp_product t, (SELECT @row :=0) r 
例：SELECT @row := @row + 1 as row, t.* FROM some_table t, (SELECT @row := 0) r
例：SELECT @row := @row +1 AS ROW , t.pro_name, t.place FROM mp_product t, (SELECT @row :=0) r 