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DuckDynamicTable

Struct DuckDynamicTable 

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pub struct DuckDynamicTable { /* private fields */ }
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动态结果集:bind 阶段算出的 schema + 行迭代器。

A dynamic result table: the schema computed during bind plus the row iterator.

它就是用户 bind 函数的返回值(见 DynamicTableFunctionAdapter):bind 负责「读外部 元数据、给出 schema、造出迭代器」,scan 负责按 schema 批量写出。

This is what a user bind function returns (see DynamicTableFunctionAdapter): bind reads the external metadata, publishes the schema and builds the iterator; scan writes rows out according to that schema.

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impl DuckDynamicTable

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pub fn new(schema: DuckResultSchema, rows: DuckDynamicIterator) -> Self

由 schema 与行迭代器构造结果集。

Builds a result table from a schema and a row iterator.

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pub fn schema(&self) -> &DuckResultSchema

输出 schema。

The output schema.

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pub fn into_parts(self) -> (DuckResultSchema, DuckDynamicIterator)

拆成 (schema, 行迭代器),供适配层放进 scan 状态。

Splits into (schema, row iterator) so the adapter can move them into the scan state.

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impl Debug for DuckDynamicTable

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

只打印 schema —— 迭代器无法 Debug,也不该被打印。

Prints the schema only — the iterator is not Debug and should not be printed anyway.

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