第一个runstats命令为表customer和它的所有索引收集最全面、最详细的统计信息，而没有采用抽样。
The first runstats commands collects the most comprehensive and detailed statistics for the table customer and all its indexes without sampling.
本研究采用整群抽样方法对广西兴安县城的871名4 ~ 6岁儿童的形态、素质等指标作了较全面测试。
A cluster sampling technique was used to measure physique development of 871 children aged 4-6 years in Xingan county, Guangxi Zhuang Autonomous Region.
采取典型抽样的方法对沈阳市行道树进行了全面的群落调查。
Systematic community investigation into street trees in Shenyang was carried out using typical sampling method.
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