Autotrace running total : autotrace « SQL Plus « Oracle PL / SQL





Autotrace running total

   
SQL>
SQL> set echo on
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> select ename, deptno, sal,
  2    (select sum(sal)
  3      from t e2
  4      where e2.deptno < emp.deptno
  5      or (e2.deptno = emp.deptno and e2.ename <= emp.ename ))
  6  running_total,
  7    (select sum(sal)
  8      from t e3
  9      where e3.deptno = emp.deptno
 10      and e3.ename <= emp.ename)
 11  department_total,
 12    (select count(ename)
 13      from t e3
 14      where e3.deptno = emp.deptno
 15      and e3.ename <= emp.ename) seq
 16  from t emp
 17  order by deptno, ename
 18  /

1000 rows selected.


Execution Plan
----------------------------------------------------------
Plan hash value: 92139442

--------------------------------------------------------------------------------------
| Id  | Operation                    | Name  | Rows  | Bytes | Cost (%CPU)| Time     |
--------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT             |       |  1000 | 43000 |     4  (25)| 00:00:01 |
|   1 |  SORT AGGREGATE              |       |     1 |    43 |            |          |
|*  2 |   TABLE ACCESS FULL          | T     |    50 |  2150 |     3   (0)| 00:00:01 |
|   3 |  SORT AGGREGATE              |       |     1 |    43 |            |          |
|   4 |   TABLE ACCESS BY INDEX ROWID| T     |     1 |    43 |     2   (0)| 00:00:01 |
|*  5 |    INDEX RANGE SCAN          | T_IDX |     1 |       |     2   (0)| 00:00:01 |
|   6 |  SORT AGGREGATE              |       |     1 |    30 |            |          |
|*  7 |   INDEX RANGE SCAN           | T_IDX |     1 |    30 |     2   (0)| 00:00:01 |
|   8 |  SORT ORDER BY               |       |  1000 | 43000 |     4  (25)| 00:00:01 |
|   9 |   TABLE ACCESS FULL          | T     |  1000 | 43000 |     3   (0)| 00:00:01 |
--------------------------------------------------------------------------------------

Predicate Information (identified by operation id):
---------------------------------------------------

   2 - filter("E2"."DEPTNO"<:B1 OR "E2"."DEPTNO"=:B2 AND "E2"."ENAME"<=:B3)
   5 - access("E3"."DEPTNO"=:B1 AND "E3"."ENAME"<=:B2)
   7 - access("E3"."DEPTNO"=:B1 AND "E3"."ENAME"<=:B2)

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


Statistics
----------------------------------------------------------
         39  recursive calls
          0  db block gets
      15678  consistent gets
          4  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 autotrace off

   
    
  










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