In explicit UPDATE STATISTICS operations in MEDIUM mode, a new SAMPLING SIZE option in the resolution clause specifies the minimum number of rows to sample for column distributions.
在使用MEDIUM模式的显式的UPDATE STATISTICS操作中,可以在resolution子句中使用新的SAMPLING SIZE选项为列分布抽样指定最小行数。
This sample only USES a portion of them: URL, snippet, title, cached size, related information present, host name, and the query keyword itself for test purpose.
出于测试的目的,本示例只使用其中的一部分列:url、片段、标题、缓存大小、相关信息、主机名和查询关键字本身。
The sample size of a treatment is the number of people who received that treatment.
一个处理水平的样本量为接受这个处理水平来访者的数量。
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