https://gamov.io/tags/duckdb/Recent content in Duckdb on Viktor GamovHugoen-us2011–2026 Viktor GamovWed, 08 Apr 2026 00:00:00 +0000https://gamov.io/posts/time-travel-schema-evolution/Wed, 08 Apr 2026 00:00:00 +0000https://gamov.io/posts/time-travel-schema-evolution/<h2 id="tldr" class="discrete">TLDR</h2> <div class="ulist"> <ul> <li> <p>Iceberg tracks every Flink checkpoint as an immutable snapshot. That gives you time travel queries on a streaming pipeline for free, with about 30-second granularity.</p> </li> <li> <p>You can add columns to a live Iceberg table while Flink is writing to it. Old rows get NULLs for the new columns, and the pipeline keeps running without rewriting data or taking downtime.</p> </li> <li> <p>DuckDB reads the same Iceberg tables without Trino running. Three different query engines can hit the same data without copying anything.</p> </li> </ul> </div>