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columnar_leave_dynamic

mz_compute::render::columnar

Function columnar_leave_dynamic 

Source 
pub fn columnar_leave_dynamic<'scope>(
    collection: Collection<'scope, Product<Timestamp, PointStamp<u64>>, Column<(Row, Product<Timestamp, PointStamp<u64>>, Diff)>>,
    level: usize,
) -> Collection<'scope, Product<Timestamp, PointStamp<u64>>, Column<(Row, Product<Timestamp, PointStamp<u64>>, Diff)>>
Expand description

Leaves a dynamically created scope that has level iteration coordinates.

The columnar counterpart of differential’s leave_dynamic, which it offers only for Vec collections. Keeping the recursive binding’s result on the edge is what lets the feedback loop run without a decode and a re-encode per iteration.