# Functions
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针对同一个表只能存在一个遍历器 同步请求的遍历只针对数据量较小的表，由于会把所有的数据存放在内存中，占用内存 数据量较大的表可以使用异步遍历，边遍历边处理数据.
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针对同一个表只能存在一个遍历器 同步请求的遍历只针对数据量较小的表，由于会把所有的数据存放在内存中，占用内存 数据量较大的表可以使用异步遍历，边遍历边处理数据.
No description provided by the author