SQL> select * from employees d, departments t where d.department_id=t.department_id; 106 rows selected. Execution Plan
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Plan hash value: 1343509718 --------------------------------------------------------------------------------
------------ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)
| Time | --------------------------------------------------------------------------------
------------ | 0 | SELECT STATEMENT | | 106 | 9540 | 6 (17)
| 00:00:01 | | 1 | MERGE JOIN | | 106 | 9540 | 6 (17)
| 00:00:01 | | 2 | TABLE ACCESS BY INDEX ROWID| DEPARTMENTS | 27 | 567 | 2 (0)
| 00:00:01 | | 3 | INDEX FULL SCAN | DEPT_ID_PK | 27 | | 1 (0)
| 00:00:01 | |* 4 | SORT JOIN | | 107 | 7383 | 4 (25)
| 00:00:01 | | 5 | TABLE ACCESS FULL | EMPLOYEES | 107 | 7383 | 3 (0)
| 00:00:01 | --------------------------------------------------------------------------------
------------ Predicate Information (identified by operation id):
--------------------------------------------------- 4 - access("D"."DEPARTMENT_ID"="T"."DEPARTMENT_ID")
filter("D"."DEPARTMENT_ID"="T"."DEPARTMENT_ID") Statistics
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8 recursive calls
0 db block gets
20 consistent gets
0 physical reads