I would run slowly in the first session of the week for a couple of hours.
我会在一周的前几天每次慢慢地跑上几个小时。
In the first session (we will refer to it as SESSION1), one will be executing the query.
在第一个会话中(称为SESSION1),我们将执行这个查询。
The database manager automatically rolls back one of the transactions, either the one in the first session or the one in the second session.
数据库管理器自动回滚其中一个事务,第一个会话中的或第二个会话中的。
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