但是，您总是可以上卷(汇总)数据以创建一个略粗的粒度级别的表。
You can, however, always roll up (summarize) the data to create a table with a less detailed level of granularity.
内容类型的粒度是表级别的而不是行级别的。
The granularity of the content type is to the table level rather than the row level.
改变表的锁定粒度。
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