[阅读: 321] 2005-04-15 08:16:59
oracle,如果有两条记录,没有可供排序比较的字段,如何区分哪一条记录是先插入的,哪一条是后插入的?
Rowid?还是直接选择出来就行了?
......... @@@@@ @@@@@.........
........ @ @ @ @.........
....... @@@ @ @ .........
...... @@ @ @ .........
...... @@@@@@@ @@@@@ th .......
.... ----------------------- ......
... C E N T U R Y ....
... ----------------------- ...
.. @@@@@ @@@@@ @ @ @@@@@ ..
== @ @ @ @ @ ==
__||__ @ @@@@ @ @ __||__
| | @ @ @ @ @ | |
_________|______|_____ @ @@@@@ @ @ @ _____|______|____