Scanning the posters, she picks out a few prospects: "Doctors are good – health is very important … Engineers are OK too … I don't really like drivers; it's too dangerous a job.
看过那些单子之后,她选了几个比较中意的:“医生不错——因为健康很重要……工程师也可以……我不是很喜欢司机,那种工作太危险。
Our first major problem is that we are scanning the full bills table every time we want a row out of it and locking every row we read.
我们的第一个主要问题是,当我们想要一行的内容时,我们会扫描整个账单表,并锁定我们读取的每一行。
This would limit IDS to only scanning 10,000 related rows out of 100,000 rows.
这将限制IDS仅扫描100,000行中的10,000个相关行。
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