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DuckDB

ANALYTICS
Velocity2.5

In-process analytical SQL database engine

duckdb.org ↗

DuckDB 2.0 stops being only an in-process database: it now ships as a server too.

olapclient-serverquack-protocolasync-iovariantlts
◆Current state
DuckDB 2.0.0 is out as a long-term support release, supported until at least October 2027. The team calls it its biggest feature release so far: a polished Quack client-server protocol with a new CONNECT statement, asynchronous I/O for Parquet, CSV and native storage, a first-class VARIANT type, agent mode, triggers and an extensible SQL parser. v1.5.6, released three weeks earlier, kept the older line moving with fixes, a stabilized v1 C API and 2.0 API spellings backported.
◆Where it's heading
The product's identity is widening. Quack lets DuckDB run client-server, CONNECT also reaches PostgreSQL and MySQL with queries pushed down to them, and asynchronous I/O targets remote reads on object storage. Support policy moves with it: 1.5 was extended to March 2027 and effectively became an LTS line, while 1.4 support ends on November 17, 2026. Users now get a dated migration window rather than a rolling upgrade.
◆Prediction
Expect 2.0.x patches alongside fixes for 1.5 through March 2027. The 1.4 line should stop receiving releases after its November 17 end date.

◆Recent moves

  1. 23d ago

    DuckDB 2.0 LTS: Quack server, async I/O, first-class VARIANT

    The release breaks the patch-only pattern of the past months. Quack, asynchronous I/O and VARIANT make 2.0 the feature release that the 1.x stability work left room for.

    View source ↗
  2. 1mo ago

    DuckDB v1.5.6 Bugfix Release

    Mostly Top-N window elimination and pushdown fixes, but it also stabilizes the v1 C API and backports DuckDB 2.0 API spellings. That makes 1.5 a bridge to 2.0 rather than just a maintained branch.

    View source ↗
  3. 3mo ago

    DuckDB v1.5.5 Bugfix Release

    A patch release for issues found after 1.5.4, notable mainly for backporting out-of-bounds security fixes onto this branch. The rest is dependency cleanup and debugging tooling, so the security content is the reason to take it.

    View source ↗
  4. 5mo ago

    DuckDB v1.5.4 Bugfix Release

    Routine bugfixes after 1.5.3, largely backports and destructor cleanup. Shipped the same day as 1.4.5, which is the clearest sign both lines are actively maintained rather than one being frozen.

    View source ↗
  5. 5mo ago

    DuckDB v1.4.5 Bugfix Release

    The older 1.4 line gets its own patch on the same day as 1.5.4, covering secret-manager idempotency and filesystem API use in the query profiler. Maintenance for users who have not moved to 1.5.

    View source ↗
  6. 5mo ago

    DuckDB v1.5.3 Bugfix Release

    Bugfixes after 1.5.2 including a DuckLake bump and an ADBC ingest fix for catalog resolution shadowing temp tables. Ordinary patch content in a window made entirely of patch releases.

    View source ↗