If you really need random rows out of your results, there are much better ways of doing it.

如果你确实需要随机的返回行，我们有更为有效的方法。

youdao

Since DB2 will only use the index the "traditional" way for index-only access, the rows will be returned just like our index data, in groups of identical LASTNAMEs in random order.

因为DB 2仅将以“传统”方式使用索引，以实现仅限索引的访问，各行将像我们的索引数据一样，在同样的LASTNAME小组以随机形式返回。

youdao

After the reorganization, the index NAMES_FULL_NAME will have a very low cluster factor (close to 0), because the rows are now stored in random order.

在进行重组之后，索引NAMES_FULL_NAME将具有一个极低的群集因子(接近于0)，因为现在的行是以随机次序存储的。

youdao