There is not much to be said about this query other than the fact that it is the only query that can run with a cursor stability isolation level.

关于这个查询没有很多要讲的，只有一点：该查询是惟一可以以curs or stability隔离级别运行的查询。

youdao

That is because the export utility is bound with the cursor stability (CS) isolation level (for a description of the DB2 isolation levels, see the sidebar).

这是因为export工具被绑定为具有游标稳定性(CS)隔离级别(有关DB 2隔离级别的描述，请参阅侧栏)。

youdao

Supports table and row level locking and 4 isolation levels, RR (repeatable read), rs (read stability), CS (default - cursor stability) and ur (uncommitted read).

支持表级和行级锁以及4个隔离级别：RR(可重复读)、RS(读可靠)、CS(默认——游标可靠)和UR(未提交读)。

youdao