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In a quick test on a table with 100,000 rows loaded using a sequence, a normal index was used for most queries returning up to 30 rows, as was the reverse key index, however, when the number of rows went up to 1,000,000 the reverse key index was never use |
中文意思: 在一个用一个序列载入并含100,000行的表上做一个快速的测试,分别用普通索引和逆序索引查询并返回30行数据,当行数增长到1,000,000,将不再使用逆序索引而是每次使用全表扫描。 |
以下为相关句子列表(点击查看,可以看对应的解释):
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In a public manner; openly.
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公开地以公开的态度地;公开地 |
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In a public statement, Fulham confirmed Bridge sustained a lateral ligament sprain to his right ankle. They stated that the damage is not a reoccurrence of any injury suffered previously.
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在一份公开文件中,富勒姆证实了布里奇右脚脚踝内侧韧带扭伤,但他们也指出,这次伤病并不是旧伤复发。 |
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In a quadrangle of Lahore's elegant British-built high courts, beside a soothing fountain and surrounded by red-brick colonnades, some of these lawyers are on hunger-strike—or, more accurately, skipping lunch.
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在优雅的拉舍尔英建高等法院的四合院内,在宁静的喷泉旁,在红砖柱廊的环抱下,一些律师正在绝食以示支持,更准确的说法是,绝午餐。 |
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In a quaint and quiet island community off the coast of Maine, Susan is a young widow suffering from deep grief for the loss of her husband, Ron.
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在一个与缅因州海岸隔岸向望的古色古香、安宁的小岛居住区,苏珊是个遭受失去丈夫罗恩而痛苦的年轻寡妇。 |
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In a quantum world, at the most fundamental level everything is in a state of constant flux, even “empty” space, which is in fact filled with virtual particles that perpetually pop in and out of existence.
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在量子世界中,所有的东西在最基本的层次上都会不停的变动,即使是在「真空」中,也有虚粒子不停地出现又消失。 |
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In a quick test on a table with 100,000 rows loaded using a sequence, a normal index was used for most queries returning up to 30 rows, as was the reverse key index, however, when the number of rows went up to 1,000,000 the reverse key index was never use
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在一个用一个序列载入并含100,000行的表上做一个快速的测试,分别用普通索引和逆序索引查询并返回30行数据,当行数增长到1,000,000,将不再使用逆序索引而是每次使用全表扫描。 |
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In a quiet, sunny Scottish valley.
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在一个平静阳光普照的苏格兰盆地. |
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In a radius of 30 kilometers, there are no human settlements—just forests that have begun reclaiming fields and towns, home to birds, deer, wild boar and moose.
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书中浮现一个未来,类似俄罗斯1986年车诺比尔核子反应炉爆炸,喷出放射性蒸汽云层,在半径30公里内,不见人烟,只有森林正开始重回田野和乡镇,成为鸟、鹿、野猪和麋鹿的栖息地。 |
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In a rare candid note, written that February, he admitted that he thought he might be beheaded “at any time”.
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根据2月的一份讲话记录稿记载,他少见地坦言自己“随时”会人头落地。 |
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In a rare public discussion of her husband's infidelity, Democratic presidential candidate Hillary Rodham Clinton said Monday that she probably could not have gotten through her marital troubles without relying on her faith in God.
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本周一,民主党总统候选人希拉里在一次罕见的、公开谈论丈夫克林顿在担任总统期间的性丑闻时说,如果不是靠着对上帝的信仰,她不可能度过那段婚姻危机。 |
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In a rare tip of the hat to the competition, Airbus congratulated Boeing on the 787, whose commercial success has chipped away at the edge the European plane maker once held over its Chicago-based rival.
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向竞争者致敬实是罕见﹐[但]空中巴士为787向波音道喜﹐这欧洲的飞机制造者曾领先设于芝加哥的竞争对手﹐波音787的商业成功逐渐减弱这优势。 |
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