High Water Mark　图示 

+---- high water mark of newly created table
|
V
+--------------------------------------------------------+
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

      high water mark after inserting 10,000 rows
                                    |
                                    v
+--------------------------------------------------------+
|x |x |x |x |x |x |x |x |x |x |x |x |  |  |  |  |  |  |  |
|x |x |x |x |x |x |x |x |x |x |x |x |  |  |  |  |  |  |  |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+


      high water mark after inserting 10,000 rows
                                    |
                                    v
+--------------------------------------------------------+
|x |x |x |x |x |x |x |  |  |  |  |  |  |  |  |  |  |  |  |
|x |x |x |x |x |x |x |  |  |  |  |  |  |  |  |  |  |  |  |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

 

posted @ 2013-10-18 13:13  健哥的数据花园  阅读(362)  评论(0)  编辑  收藏  举报