一个分区键由在表创建时定义的一个或多个列组成。

A partitioning key consists of one or more columns defined at table creation.

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因此，如果源表在RI关系中为父表或子表，您需要捕捉外键定义并在移动表之后重新创建它们。

Therefore, if your source table was either a parent or child in an RI relationship, you need to capture the foreign keys definition and recreate them after the table is moved.

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Ruby散列表(或关联数组)是一种数据结构，允许您定义用于存储的键(而不是简单的数值索引)。

A Ruby hash (or associative array) is a data structure that allows you to define the key for storage (instead of a simple numerical index).

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