{"id":"cdc-materialized-view-transform-none-deletes","text":"When a `MaterializedView`'s transform function returns `None` for an INSERT or UPDATE event, the row is removed from the view rather than stored, acting as a filter on the derived table.","truth_value":"IN","source":"entries/2026/05/29/change-data-capture-cdc.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"cdc-materialized-view-transform-none-deletes","truth_value":"IN","reason":"premise"}]}}