Statistics query Timing on index

   
SQL>
SQL> create table t
  2  as
  3  select object_name ename,
  4         mod(object_id,50) deptno,
  5         object_id sal
  6    from all_objects
  7    where rownum <= 1000
  8  /

Table created.

SQL>
SQL> create index t_idx on t(deptno,ename);

Index created.

SQL>
SQL> set autotrace traceonly
SQL> set timing on
SQL> select ename, deptno, sal,
  2    sum(sal) over
  3      (order by deptno, ename) running_total,
  4    sum(sal) over
  5      (partition by deptno
  6       order by ename) department_total,
  7    row_number() over
  8      (partition by deptno
  9       order by ename) seq
 10  from t emp
 11  order by deptno, ename
 12  /

1000 rows selected.

Elapsed: 00:00:00.19

Execution Plan
----------------------------------------------------------
Plan hash value: 2335850315

---------------------------------------------------------------------------
| Id  | Operation          | Name | Rows  | Bytes | Cost (%CPU)| Time     |
---------------------------------------------------------------------------
|   0 | SELECT STATEMENT   |      |  1000 | 43000 |     3   (0)| 00:00:01 |
|   1 |  WINDOW SORT       |      |  1000 | 43000 |     3   (0)| 00:00:01 |
|   2 |   TABLE ACCESS FULL| T    |  1000 | 43000 |     3   (0)| 00:00:01 |
---------------------------------------------------------------------------

Note
-----
   - dynamic sampling used for this statement


Statistics
----------------------------------------------------------
         28  recursive calls
          0  db block gets
         15  consistent gets
          0  physical reads
          0  redo size
      44533  bytes sent via SQL*Net to client
       1106  bytes received via SQL*Net from client
         68  SQL*Net roundtrips to/from client
          1  sorts (memory)
          0  sorts (disk)
       1000  rows processed

SQL>
SQL> set timing off
SQL>
SQL> drop table t;

Table dropped.

SQL>
SQL>

Related examples in the same category

1.	Time command
2.	Time and autotrace a big table
3.	Time query for a huge table
4.	time a query with where clause
5.	Time lower text function
6.	Loop timing
7.	timing unconditional loop
8.	Performace difference between sql and pl/sql
9.	TIMING table copying
10.	Timing passing table collection parameter to a procedure

Statistics query Timing on index : Timing « SQL Plus « Oracle PL / SQL

Related examples in the same category