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execute_lateral_loop

nodedb_lite::query::query_ops::lateral_loop

Function execute_lateral_loop 

Source 
pub async fn execute_lateral_loop<S: StorageEngine>(
    engine: &LiteQueryEngine<S>,
    outer_plan: &PhysicalPlan,
    spec: LateralLoopSpec<'_>,
) -> Result<QueryResult, LiteError>
Expand description

LATERAL nested-loop with correlated predicates injected per outer row.

Runs outer_plan once to materialise outer rows, caps them at outer_row_cap (0 = uncapped), then for each outer row builds equality filters from correlation_predicates and scans inner_collection. Emits every matching inner row merged with the outer row. Supports LEFT join semantics.