分区键应该将最常使用的列作为谓词包含在查询中。
The partitioning key should include the columns that are used most often as predicates in queries.
要删除的该组用户作为谓词参数输入，但最好使用上下文变量。
The set of users to be removed is entered as verb parameter, preferably using context variables.
要删除的该组用户作为谓词参数输入，但最好使用上下文变量。
The set of users to be removed is entered as a verb parameter, preferably using context variables.
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