The relevant factor that impacts the complexity of the job is the number of different grouping keys, not the number of different aggregated columns that you would see in counting functions.
影响任务复杂性的相关要素是不同分组关键字的数量，而不是在计数函数中所看到的，不同的所聚合列的数量。
Assets regrouping is a kind of business management by capital circulating, which is a long process in optimization grouping essential factor of production and optimization regrouping resource.
资产重组是以资本运营为手段实现的企业经营战略；资本运营是生产要素优化组合和资源优化配置的过程。
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