如果要添加此变数据，请打开您的数据库概述以显示数据库维度清单。

To add this metadata, open the outline for your database to display the list of database dimensions.

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一个数据库选项，用来指定日期维度表在初次启动被创建时预填充的天数(从当前日期开始)。

A database option that specifies the number of days (starting from the current date) to pre-populate in the date dimension table when it creates it on first startup.

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在位向量下推中，对于每次下推，数据库服务器通过散列维度表中的键来创建发送至事实表的位向量。

In a bit-vector pushdown, for each push-down, the database server hashes the keys from the dimension table to create a bit vector, which is shipped to the fact table.

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