Impact Score: 5/10
DuckDB v1.5.3 Bugfix Release
Source available โ automated, not human-reviewed
Component: duckdb ยท Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
โก Executive Summary (TL;DR)
DuckDB v1.5.3. Source highlight: This is a bugfix release for various issues discovered after we released v1.5.2.
Who Does This Impact? (Role-Based Analysis)
๐ป Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
๐ Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
โ๏ธ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
โจ New Features & Capabilities (6)
- Add iceberg copy function autoload
- Add `DISABLE_BUILTIN_HTTPLIB` option
- Set `query` field for statements in `ALTER TABLE ... ADD COLUMN ... DEFAULT ...` workaround
- Add support for reading `VARIANT` using C API
- Add storage informations for v1.5.3
- Add quack autoloading
โก Performance & Enhancements (1)
- GetLocalFileSystem improvements
๐ง Bug Fixes & Patches (6)
- fix: resolve current catalog in ADBC Ingest to avoid temp table shadowing
- Fix TIMESTAMPFORMAT being ignored for TIMESTAMPTZ columns in copy to json
- Fix DISABLE_EXTENSION_LOAD
- Fix `INSERT OR REPLACE BY NAME` regression by excluding conflict columns from `SET` list
- Fix constant struct args in lateral table in-out functions
- Fix empty parquet child schema
๐ View Raw Release Notes (Original Developer Log)
This is a bugfix release for various issues discovered after we released v1.5.2.
Please also refer to the announcement blog post: https://duckdb.org/2026/05/20/announcing-duckdb-153
## What's Changed
* Use DB serialization compatibility for json_serialize_sql by @kryonix in https://github.com/duckdb/duckdb/pull/22004
* DuckLake Bump by @pdet in https://github.com/duckdb/duckdb/pull/22014
* fix: resolve current catalog in ADBC Ingest to avoid temp table shadowing by @eitsupi in https://github.com/duckdb/duckdb/pull/22020
* Fix TIMESTAMPFORMAT being ignored for TIMESTAMPTZ columns in copy to json by @DinosL in https://github.com/duckdb/duckdb/pull/21992
* Provide BWC support for join filter pushdowns by @ywelsch in https://github.com/duckdb/duckdb/pull/22029
* Add iceberg copy function autoload by @NiclasHaderer in https://github.com/duckdb/duckdb/pull/22037
* Fix DISABLE_EXTENSION_LOAD by @mlafeldt in https://github.com/duckdb/duckdb/pull/22019
* Fix `INSERT OR REPLACE BY NAME` regression by excluding conflict columns from `SET` list by @DinosL in https://github.com/duckdb/duckdb/pull/22049
* Git-ignore generated extension loader by @mlafeldt in https://github.com/duckdb/duckdb/pull/22056
* Fix constant struct args in lateral table in-out functions by @AlfieJones in https://github.com/duckdb/duckdb/pull/21827
* Avoid handling Ctrl+C during shutdown (state might be already gone) by @carlopi in https://github.com/duckdb/duckdb/pull/22059
* Add `DISABLE_BUILTIN_HTTPLIB` option by @carlopi in https://github.com/duckdb/duckdb/pull/22054
* Set `query` field for statements in `ALTER TABLE ... ADD COLUMN ... DEFAULT ...` workaround by @yan-alex in https://github.com/duckdb/duckdb/pull/22057
* Coorporative tasks might lead to busy spinning in `TaskExecutor::WorkOnTasks` by @NiclasHaderer in https://github.com/duckdb/duckdb/pull/22092
* Row group append by @evertlammerts in https://github.com/duckdb/duckdb/pull/22060
* Fix empty parquet child schema by @dentiny in https://github.com/duckdb/duckdb/pull/22105
* Issue #22096: TopN Window Casts by @hawkfish in https://github.com/duckdb/duckdb/pull/22098
* Add support for reading `VARIANT` using C API by @Dtenwolde in https://github.com/duckdb/duckdb/pull/22065
* Bump Julia to v1.5.2 by @taniabogatsch in https://github.com/duckdb/duckdb/pull/22121
* fix commit iteration offset bug + relax RemoveFromIndexes assertion by @artjomPlaunov in https://github.com/duckdb/duckdb/pull/22094
* Internal #8812: From TIMESTAMPTZ Casts by @hawkfish in https://github.com/duckdb/duckdb/pull/22000
* Only build plan_serializer when building the main DuckDB library by @rustyconover in https://github.com/duckdb/duckdb/pull/22100
* Fix Row Group Pruner Distinct Bug by @d-justen in https://github.com/duckdb/duckdb/pull/22132
* Correctly skip preprocessing PIVOT MultiStatements by @yan-alex in https://github.com/duckdb/duckdb/pull/22141
* fix(adbc): report the table name if the table doesn't exist when appending by @eitsupi in https://github.com/duckdb/duckdb/pull/22146
* [v1.5 patch] Attempt to fix cache read by @dentiny in https://github.com/duckdb/duckdb/pull/22126
* Also execute auto-rollback on CLI ClientContext::Query() query by @yan-alex in https://github.com/duckdb/duckdb/pull/22159
* Fix window self join optimizer by @kryonix in https://github.com/duckdb/duckdb/pull/22164
* Account for ROW_GROUP_SIZE when deciding whether to append to an existing row group by @evertlammerts in https://github.com/duckdb/duckdb/pull/22109
* Use the latest storage version for temp storage by @Mytherin in https://github.com/duckdb/duckdb/pull/22169
* Fix: Add pg_catalog.pg_collation compatibility view for SQLAlchemy 2.0.45 reflection by @alonfaraj in https://github.com/duckdb/duckdb/pull/22160
* Fix CSV escape by @dentiny in https://github.com/duckdb/duckdb/pull/22176
* Fix union_by_name remap for non-nested parquet columns by @feichai0017 in https://github.com/duckdb/duckdb/pull/22177
* User-facing `enable_caching_operators` setting by @lnkuiper in https://github.com/duckdb/duckdb/pull/22191
* Fix bignum sum Combine to correctly take over memory ownership of state by @Mytherin in https://github.com/duckdb/duckdb/pull/22209
* CompressedFile::Close -> calls Close on its child_handle by @benfleis in https://github.com/duckdb/duckdb/pull/22149
* ISSUE-22061: Fix JSON shell output: emit BOOLEAN as true/false, not strings by @herbenderbler in https://github.com/duckdb/duckdb/pull/22073
* [Bugfix] Reset pg_err_pos in pg_parser_init to prevent stale error position leaking by @p1p1bear in https://github.com/duckdb/duckdb/pull/22239
* Bump httpfs to 3139e40a by @carlopi in https://github.com/duckdb/duckdb/pull/22248
* Correctly use new row group when checkpointing, and avoid incorrectly re-using metadata when targeting older storage versions and row ids have changed by @Mytherin in https://github.com/duckdb/duckdb/pull/22253
* Fix: release ParquetReader when a file is marked SKIPPED in multi-file scan by @J-Meyers in https://github.com/duckdb/duckdb/pull/22261
* Fix UTCยฑNN00 cannot be parsed in SQL by @tianjq16 in https://github.com/duckdb/duckdb/pull/22244
* Defer Bloom Filter Pushdown until it's done by @lnkuiper in https://github.com/duckdb/duckdb/pull/22218
* [v1.5] Backport ADBC memleak fix on error path by @dentiny in https://github.com/duckdb/duckdb/pull/22216
* Allow package builds to choose linked extensions by @mlafeldt in https://github.com/duckdb/duckdb/pull/22305
* Fix UTC+HHMM time zone was parsed incorrectly by @tianjq16 in https://github.com/duckdb/duckdb/pull/22297
* Bump httpfs by @carlopi in https://github.com/duckdb/duckdb/pull/22312
* Exception format: accept string literals by @carlopi in https://github.com/duckdb/duckdb/pull/22314
* Skip schema analysis even if no shredding for rowgroup by @rgernhardt in https://github.com/duckdb/duckdb/pull/21937
* Use batch limit for table scans with filters by @Mytherin in https://github.com/duckdb/duckdb/pull/22315
* Also redacting bearer token for HTTP secrets by @hannes in https://github.com/duckdb/duckdb/pull/22323
* First initialize system, then load extensions (to peek at file to be opened) by @carlopi in https://github.com/duckdb/duckdb/pull/22341
* Node Handle Scoping fix by @artjomPlaunov in https://github.com/duckdb/duckdb/pull/22344
* Enable windows_amd64 for lance extension by @carlopi in https://github.com/duckdb/duckdb/pull/22367
* Internal #9003: TIMETZ Parsing Limit by @hawkfish in https://github.com/duckdb/duckdb/pull/22378
* Downcasting decimal fix incorrect out of range error by @Dtenwolde in https://github.com/duckdb/duckdb/pull/22386
* GetLocalFileSystem improvements by @carlopi in https://github.com/duckdb/duckdb/pull/21983
* Fix double decrement of evicted_data_per_tag in .block read-back by @krleonid in https://github.com/duckdb/duckdb/pull/22394
* RowGroup Operator metrics: sequentially scanned row groups + total row groups + cumulative counterparts by @artjomPlaunov in https://github.com/duckdb/duckdb/pull/22339
* PostgreSQL compatability: in `pg_catalog.pg_database` simulate columns datallowconn, datistemplate by @muayyad-alsadi in https://github.com/duckdb/duckdb/pull/22302
* Fix eviction size metrics report by @dentiny in https://github.com/duckdb/duckdb/pull/22452
* Fix enable_logging() silently resetting logging_storage by @guillesd in https://github.com/duckdb/duckdb/pull/22475
* Avoid 3 instances of idx_t - idx_t > 0, and avoid unnecessary check on zLine by @carlopi in https://github.com/duckdb/duckdb/pull/22518
* Fix RESET my_global_extension_setting to actually be GLOBAL by @carlopi in https://github.com/duckdb/duckdb/pull/22520
* Fix BlockAllocator invalid memory access by @dentiny in https://github.com/duckdb/duckdb/pull/22503
* Patch httplib by making ThreadPool constructor more solid on pthread_create failures by @carlopi in https://github.com/duckdb/duckdb/pull/22516
* Fix duck fuzz #4430 by @dentiny in https://github.com/duckdb/duckdb/pull/22435
* Test runner: avoid running clean-up routine if there is no database to run it in by @Mytherin in https://github.com/duckdb/duckdb/pull/22540
* Fix bare numeric interval parsing at end of string on v1.5 by @M1llerF in https://github.com/duckdb/duckdb/pull/22534
* Fix parquet metadata cache validation by @dentiny in https://github.com/duckdb/duckdb/pull/22547
* ExtensionInstall: Remove use of IsHTTP to IsRemoteFile by @carlopi in https://github.com/duckdb/duckdb/pull/21900
* Fix variant write small decimal by @dentiny in https://github.com/duckdb/duckdb/pull/22544
* Move http_proxy setting to global setting, and use GetEnvVariable('HTTP_PROXY') as default by @carlopi in https://github.com/duckdb/duckdb/pull/22541
* Bump httpfs and remove patches by @carlopi in https://github.com/duckdb/duckdb/pull/22556
* Bump Postgres, MySQL and ODBC by @staticlibs in https://github.com/duckdb/duckdb/pull/22579
* Bump avro, azure, delta, ducklake, spatial, unity_catalog and vortex by @carlopi in https://github.com/duckdb/duckdb/pull/22554
* Fix variant selection vector index by @dentiny in https://github.com/duckdb/duckdb/pull/22573
* Fix for SIGABRT in setting size on zero-capacity vector by @ccfelius in https://github.com/duckdb/duckdb/pull/22571
* Fix incorrect profiling results when using `LIMIT` by @sebastiaan-dev in https://github.com/duckdb/duckdb/pull/22561
* Move Jemalloc into core by @Maxxen in https://github.com/duckdb/duckdb/pull/22558
* Allow json ts format variation across columns - issue 22103 by @benfleis in https://github.com/duckdb/duckdb/pull/22559
* Limit parallel linker jobs to avoid out-of-memory errors by @smvv in https://github.com/duckdb/duckdb/pull/22588
* ARTOperator::Delete return false if rowid not found in nested ART leaf by @artjomPlaunov in https://github.com/duckdb/duckdb/pull/22591
* Enable/disable jemalloc linking through BUILD/SKIP_EXTENSIONS by @Maxxen in https://github.com/duckdb/duckdb/pull/22594
* Bump AWS extension by @staticlibs in https://github.com/duckdb/duckdb/pull/22600
* bump spatial again by @Maxxen in https://github.com/duckdb/duckdb/pull/22602
* Jemalloc is not an extension anymore by @carlopi in https://github.com/duckdb/duckdb/pull/22603
* bump iceberg by @Tmonster in https://github.com/duckdb/duckdb/pull/22608
* CUMULATIVE_VACUUM_TIME metric by @artjomPlaunov in https://github.com/duckdb/duckdb/pull/22425
* parser_tools is apparently now a dependency for postgres by @carlopi in https://github.com/duckdb/duckdb/pull/22619
* Bump DuckLake for release by @pdet in https://github.com/duckdb/duckdb/pull/22651
* Bump lance to 533e0ee6cf419e4be2af3af56182fb04b87978e1 by @carlopi in https://github.com/duckdb/duckdb/pull/22640
* Add storage informations for v1.5.3 by @carlopi in https://github.com/duckdb/duckdb/pull/22638
* Add quack autoloading by @carlopi in https://github.com/duckdb/duckdb/pull/22631
* Add `quack` extension by @carlopi in https://github.com/duckdb/duckdb/pull/22614
* bump aws extension by @samansmink in https://github.com/duckdb/duckdb/pull/22623
* bump avro+iceberg+vcpkg-duckdb-ports by @Tishj in https://github.com/duckdb/duckdb/pull/22621
* optimizer: don't return truncated VARCHAR MIN/MAX from statistics by @nahomar in https://github.com/duckdb/duckdb/pull/22538
* Bump excel / remove patch by @carlopi in https://github.com/duckdb/duckdb/pull/22633
* Bump sqlsmith, remove patch by @carlopi in https://github.com/duckdb/duckdb/pull/22622
* Fix free block for temporary file manageer by @dentiny in https://github.com/duckdb/duckdb/pull/22616
* Add dummy cmake target for jemalloc by @evertlammerts in https://github.com/duckdb/duckdb/pull/22632
* Bump quack by @carlopi in https://github.com/duckdb/duckdb/pull/22659
* Fix invalid access for file row number by @dentiny in https://github.com/duckdb/duckdb/pull/22662
* Fix enum type write to parquet by @dentiny in https://github.com/duckdb/duckdb/pull/22677
* Add `write_buffer_row_group_memory_limit` setting which controls when to flush row groups based on memory instead of only based on row group count by @Mytherin in https://github.com/duckdb/duckdb/pull/22666
* Fix max file row number by @dentiny in https://github.com/duckdb/duckdb/pull/22688
* Fix new jemalloc plumbing by @mlafeldt in https://github.com/duckdb/duckdb/pull/22628
* Bump DuckLake by @pdet in https://github.com/duckdb/duckdb/pull/22698
* Fix timer lifetime/timing issues by @taniabogatsch in https://github.com/duckdb/duckdb/pull/22697
* Enable jemalloc heap profiling with the libgcc unwinder by @mlafeldt in https://github.com/duckdb/duckdb/pull/22630
* Fix jemalloc thread flush threshold check by @xuke-hat in https://github.com/duckdb/duckdb/pull/22670
* Make several storage internals public by @samansmink in https://github.com/duckdb/duckdb/pull/22718
* Fix GCC jemalloc symbol leakage CI failure by @lnkuiper in https://github.com/duckdb/duckdb/pull/22729
* Fix iterator invalidation in ConnectionManager::GetConnectionList by @bleskes in https://github.com/duckdb/duckdb/pull/22719
* Bump quack, fixes quack_serve on wasm by @carlopi in https://github.com/duckdb/duckdb/pull/22722
* bump iceberg again by @Tmonster in https://github.com/duckdb/duckdb/pull/22723
* fix: list_zip SEGFAULT with empty / NULL argument by @carlopi in https://github.com/duckdb/duckdb/pull/22726
* Fix .sanitizer-thread-suppressions.txt jemalloc ref by @carlopi in https://github.com/duckdb/duckdb/pull/22736
* Revert "Enable jemalloc heap profiling with the libgcc unwinder" by @carlopi in https://github.com/duckdb/duckdb/pull/22740
* RowGroupPruner: treat UNSET LIMIT as unbounded by @ColtenOuO in https://github.com/duckdb/duckdb/pull/22744
* Return an error if a negative number is passed to the factorial function by @DinosL in https://github.com/duckdb/duckdb/pull/22731
**Full Changelog**: https://github.com/duckdb/duckdb/compare/v1.5.2...v1.5.3