Cardinality estimation is a process by which the optimizer USES statistics to determine the size of partial query results after predicates are applied or aggregation is performed.
基数估计是这样一种过程:在应用了谓词或执行了聚集之后,优化器使用统计信息确定部分查询结果的大小。
The younger Mr.Soong also worked as a Chinese-English translator for a time, eventually earned a Ph.D. in statistics and applied mathematics, and went into media and market research.
有一段时间年少的宋先生也做过汉英翻译的工作,他最终获得了统计学和应用数学博士学位,并进入媒体和市场研究领域。
The younger Mr. Soong also worked as a Chinese-English translator for a time, eventually earned a Ph.D. in statistics and applied mathematics, and went into media and market research.
有一段时间年少的宋先生也做过汉英翻译的工作,他最终获得了统计学和应用数学博士学位,并进入媒体和市场研究领域。
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