{"id":"map-side-join-missing-key-skip","text":"Records missing the join key are silently dropped and counted in `stats[\"skipped_records\"]` rather than raising exceptions, across all three join strategies","truth_value":"IN","source":"entries/2026/05/29/map-side-join-map_side_joins.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"map-side-join-missing-key-skip","truth_value":"IN","reason":"premise"}]}}