ColumnarScanIterator

alopex_sql::executor::query::columnar_scan

Struct ColumnarScanIterator 

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pub struct ColumnarScanIterator { /* private fields */ }
Expand description

Streaming iterator for columnar storage (FR-7 compliant).

This iterator yields rows one at a time from columnar storage, avoiding the need to materialize all rows into a Vec<Row> upfront. Segments are pre-loaded during construction, but row conversion is performed lazily as rows are requested.

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impl RowIterator for ColumnarScanIterator

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fn next_row(&mut self) -> Option<Result<Row>>

Advances the iterator and returns the next row, or None if exhausted. Read more
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fn schema(&self) -> &[ColumnMetadata]

Returns the schema of rows produced by this iterator.

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