At a large retailer, adding a missing index to a small, 2,000-row table in an 8 TB warehouse reduced the elapsed time of a critical decision support query from three hours to two minutes.
在一家大型零售商的8TB数据仓库中，在一个2,000行的小表上添加一个索引之后，一个决策支持查询花费的时间从三小时一下降到了两分钟。
The inquest report shows only 14 minutes elapsed from the time the police did their last sweep of the square in which she was killed and her body being discovered.
审讯报告指出警察最后一次在埃德温丝遇害且被发现的广场巡逻的时间距她死亡的时间仅有14分钟。
The inquest report shows only 14 minutes elapsed from the time the police did their last sweep of the square in which she was killed and her body being discovered.
审讯报告指出警察最后一次在埃德温丝遇害且被发现的广场巡逻的时间距她死亡的时间仅有14分钟。
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