原帖:http://topic.csdn.net/u/20110609/23/6aa6389d-699d-42ff-be97-bee1d82836d8.html?98354
HASH JOIN ,MERGE JOIN ,NESTED LOOP:
[1].http://blogold.chinaunix.net/u1/46451/showart_415529.html
Oracle中的Hash Join祥解:
[1].http://www.hellodba.com/reader.php?ID=144&lang=cn
[2].http://www.remote-dba.net/pl_sql/t_oracle_hash_joins.htm
Using hints with join methods:
[1].http://guyharrison.squarespace.com/blog/2009/8/30/using-hints-with-join-methods.html