DuckDB 1.4.0 release notes

This release of DuckDB is named "Andium" after Anas Andium, a species of duck that lives in the Andes mountains in South America.

Please also refer to the announcement blog post: https://duckdb.org/2025/09/16/announcing-duckdb-140.html

What's Changed

Python package devexp improvements by @evertlammerts in https://github.com/duckdb/duckdb/pull/17483
change exception type to not be an internal exception by @samansmink in https://github.com/duckdb/duckdb/pull/17551
Remove redundant code path in the ConflictManager by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17562
Add support for ToSqlString for union types by @wmTJc9IK0Q in https://github.com/duckdb/duckdb/pull/17513
Update function descriptions and examples by @c-herrewijn in https://github.com/duckdb/duckdb/pull/17132
Move query profiler's EndQuery after commit/rollback by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17595
fix extension troubleshooting link by @simon0191 in https://github.com/duckdb/duckdb/pull/17616
C API tidying by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17623
bump DuckDB_jll to v1.3.0 by @c-herrewijn in https://github.com/duckdb/duckdb/pull/17677
Add rowsort in generate_series test #43 by @jeewonhh in https://github.com/duckdb/duckdb/pull/17675
[C API] Expose duckdb_scalar_function_bind_get_extra_info by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17666
Enable profiling output for all operator types by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17665
Output hashes in unittest and fix order by @niykko in https://github.com/duckdb/duckdb/pull/17664
New Sorting Implementation by @lnkuiper in https://github.com/duckdb/duckdb/pull/17584
Merge v1.3-ossivalis into main by @Mytherin in https://github.com/duckdb/duckdb/pull/17690
Issue #17040: FILL Window Function by @hawkfish in https://github.com/duckdb/duckdb/pull/17686
ClientBufferManager wrapper to access the client context in the buffer manager by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17699
Revert "set default for MAIN_BRANCH_VERSIONING to false" by @carlopi in https://github.com/duckdb/duckdb/pull/17708
Sorting followup by @lnkuiper in https://github.com/duckdb/duckdb/pull/17717
Correctly setting the delim offset by @Damon07 in https://github.com/duckdb/duckdb/pull/17716
fix linux extension ci by @samansmink in https://github.com/duckdb/duckdb/pull/17720
Aggregation performance by @lnkuiper in https://github.com/duckdb/duckdb/pull/17718
Fix windows-2025 build errors by @adsharma in https://github.com/duckdb/duckdb/pull/17726
[SQLLogicTester] Introduce reset label <query label> in the tester by @Tishj in https://github.com/duckdb/duckdb/pull/17729
Adding additional authenticated data for encryption by @ccfelius in https://github.com/duckdb/duckdb/pull/17508
csv_scanner: correct code comment by @Djfe in https://github.com/duckdb/duckdb/pull/17735
Deprecate windows-2019 runners by @hannes in https://github.com/duckdb/duckdb/pull/17745
re-add httpfs apply_patches by @samansmink in https://github.com/duckdb/duckdb/pull/17755
Rename decorator from test_nulls to null_test_parameters by @Mytherin in https://github.com/duckdb/duckdb/pull/17760
[CAPI] Expose ErrorData by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17722
Expose file_size_bytes and footer_size in parquet_file_metadata by @gijshendriksen in https://github.com/duckdb/duckdb/pull/17750
Pass ExtensionLoader when loading extensions, change extension entry function by @Maxxen in https://github.com/duckdb/duckdb/pull/17772
Support glibc 2.28 environments by @James-Gilbert- in https://github.com/duckdb/duckdb/pull/17776
Mark Upper/LowerComparisonType as const by @JelteF in https://github.com/duckdb/duckdb/pull/17773
[Indexes] Buffer-managed indexes part 1: segment handles by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17758
[Julia] api docs improvements by @tqml in https://github.com/duckdb/duckdb/pull/15645
Ensure we use the same layout in RadixPartitionedHashTable and GroupedAggregateHashTable by @lnkuiper in https://github.com/duckdb/duckdb/pull/17790
[Profiling] Propagate the ClientContext into file handle writes by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17754
Fix propagatesNullValues for case expr by @suibianwanwank in https://github.com/duckdb/duckdb/pull/17796
Add qualified parameter to Python GetTableNames API by @evertlammerts in https://github.com/duckdb/duckdb/pull/17797
Merge v1.3 into main by @Mytherin in https://github.com/duckdb/duckdb/pull/17806
Pushdown pivot filter by @flashmouse in https://github.com/duckdb/duckdb/pull/17801
Replace string for const data ptr in encryption api by @ccfelius in https://github.com/duckdb/duckdb/pull/17825
Merge130 by @carlopi in https://github.com/duckdb/duckdb/pull/17833
fix: escape using_columns on JoinRef::ToString by @akoshchiy in https://github.com/duckdb/duckdb/pull/17839
Fix ICE with Windows ARM64 by @staticlibs in https://github.com/duckdb/duckdb/pull/17844
Merge v1.3 into main by @Mytherin in https://github.com/duckdb/duckdb/pull/17851
Add duckdb_type column to parquet_schema by @Mytherin in https://github.com/duckdb/duckdb/pull/17852
Internal #4991: Remove Epoch_MS(MS) by @hawkfish in https://github.com/duckdb/duckdb/pull/17816
#17853 Enable flexible page sizes and update Android NDK to r27 in workflow. by @aprock in https://github.com/duckdb/duckdb/pull/17854
[Indexes] Buffer-managed indexes part 2: segment handle for base nodes by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17828
Function Serialization: adapt to removal of overloads by explicitly casting if argument types have changed by @Mytherin in https://github.com/duckdb/duckdb/pull/17864
julia: add missing methods from C-API by @tqml in https://github.com/duckdb/duckdb/pull/17733
Issue #17153: Window Order Columns by @hawkfish in https://github.com/duckdb/duckdb/pull/17835
Issue #17040: FILL Secondary Sorts by @hawkfish in https://github.com/duckdb/duckdb/pull/17821
Add STRUCT to MAP cast function by @evertlammerts in https://github.com/duckdb/duckdb/pull/17799
Issue #17849: Test FILL Duplicates by @hawkfish in https://github.com/duckdb/duckdb/pull/17869
Add GenAI policy by @szarnyasg in https://github.com/duckdb/duckdb/pull/17882
Update function descriptions and examples for list, array, lambda functions by @c-herrewijn in https://github.com/duckdb/duckdb/pull/17886
Issue #17861: FILL Argument Types by @hawkfish in https://github.com/duckdb/duckdb/pull/17888
Reword GenAI policy by @szarnyasg in https://github.com/duckdb/duckdb/pull/17895
Use an arena linked list for the physical operator children by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17748
Make CTE Materialization the Default Instead of Inlining by @kryonix in https://github.com/duckdb/duckdb/pull/17459
Merge v1.3 into main by @Mytherin in https://github.com/duckdb/duckdb/pull/17897
Leverage VectorType in ColumnDataCollection by @lnkuiper in https://github.com/duckdb/duckdb/pull/17881
Fix empty BP block when writing parquet by @platypii in https://github.com/duckdb/duckdb/pull/17929
fix use after free in adbc on invalid stmt by @ruslandoga in https://github.com/duckdb/duckdb/pull/17927
Do not dispatch JDBC/ODBC jobs in release CI runs by @staticlibs in https://github.com/duckdb/duckdb/pull/17937
Block based encryption by @ccfelius in https://github.com/duckdb/duckdb/pull/17275
Unittester failures summary by @hmeriann in https://github.com/duckdb/duckdb/pull/16833
Add v1.3-ossivalis to Cross version workflow by @hmeriann in https://github.com/duckdb/duckdb/pull/17906
[CI Nightly Fix] Skip logging test if not standard block size by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17957
Visual Studio 17 (2022) fixes by @edouarda in https://github.com/duckdb/duckdb/pull/17948
[Nested] Add struct_position and struct_contains functions by @maiadegraaf in https://github.com/duckdb/duckdb/pull/17819
Enable building spatial and encodings extensions by @staticlibs in https://github.com/duckdb/duckdb/pull/17960
[Nested] Optimize structs in LIST_VALUE by @maiadegraaf in https://github.com/duckdb/duckdb/pull/17169
Unit Tester Configuration by @Mytherin in https://github.com/duckdb/duckdb/pull/17972
[nested] Allow fixed-size arrays to be unnested by @maiadegraaf in https://github.com/duckdb/duckdb/pull/17968
Merge v1.3-ossivalis into main by @Mytherin in https://github.com/duckdb/duckdb/pull/17973
[CI] Skip some workflows when updating out of tree extensions SHA by @hmeriann in https://github.com/duckdb/duckdb/pull/17949
Issue #5144: AsOf Join Threshold by @hawkfish in https://github.com/duckdb/duckdb/pull/17979
[Fix] Reset profiling info before preparing a query by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17940
Flag to disable database invalidation by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17938
Issue #5123: make_timestamp_ms by @hawkfish in https://github.com/duckdb/duckdb/pull/17908
Rework extension loading to go through thread-safe ExtensionManager by @Mytherin in https://github.com/duckdb/duckdb/pull/17994
Implement consumption and production of Arrow Binary View by @pdet in https://github.com/duckdb/duckdb/pull/17975
Add support to produce Polars Lazy Dataframes by @pdet in https://github.com/duckdb/duckdb/pull/17947
c-api to copy vector with selection by @abramk in https://github.com/duckdb/duckdb/pull/17870
Fix #18007: correctly execute expressions with pivot operator by @Mytherin in https://github.com/duckdb/duckdb/pull/18020
[Chore] Minor conflict manager refactoring by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18015
Remove Linux (32 Bit) job by @hmeriann in https://github.com/duckdb/duckdb/pull/18012
[Explain] Add the YAML format for EXPLAIN statements by @qsliu2017 in https://github.com/duckdb/duckdb/pull/17572
Unittest: Add skip_compiled option that can be used to skip built-in C++ tests by @Mytherin in https://github.com/duckdb/duckdb/pull/18034
Add ppc64le spin-wait instruction by @mgiessing in https://github.com/duckdb/duckdb/pull/17837
Merge ossivalis into main by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18036
Remove match-case statements from polars_io.py by @evertlammerts in https://github.com/duckdb/duckdb/pull/18052
Avoid adding commands read from a file to the shell history by @Mytherin in https://github.com/duckdb/duckdb/pull/18057
Adding WAL encryption by @ccfelius in https://github.com/duckdb/duckdb/pull/17955
Encryption: adding -key for the command line by @ccfelius in https://github.com/duckdb/duckdb/pull/17950
fix star expr exclude error by @jayhan94 in https://github.com/duckdb/duckdb/pull/18063
Add support for class-based expression iteration by @Mytherin in https://github.com/duckdb/duckdb/pull/18070
Use timestamp_t instead of time_t for file last modified time by @lnkuiper in https://github.com/duckdb/duckdb/pull/18037
Unittester: add on_new_connection + on_load + skip_tests options by @carlopi in https://github.com/duckdb/duckdb/pull/18042
Fix some scaling issues by @lnkuiper in https://github.com/duckdb/duckdb/pull/17985
Issue #18071: Temporal inf -inf by @hawkfish in https://github.com/duckdb/duckdb/pull/18083
Switch to Optional for type hints in polars lazy dataframe function by @evertlammerts in https://github.com/duckdb/duckdb/pull/18078
Unittest: Configure skip error messages by @carlopi in https://github.com/duckdb/duckdb/pull/18087
Avoid running DraftPR.yml until timeout if token is missing by @carlopi in https://github.com/duckdb/duckdb/pull/18090
Add start/end offset percentage options to Python test runner by @Flogex in https://github.com/duckdb/duckdb/pull/18091
[CSV Reader] Prohibit options delim and sep in same read_csv call by @ackxolotl in https://github.com/duckdb/duckdb/pull/18096
Fix correlated subquery unnest fail by @flashmouse in https://github.com/duckdb/duckdb/pull/18092
[CI] don't run jobs on draft PRs by @hmeriann in https://github.com/duckdb/duckdb/pull/18016
TPC-DS: Use BIGINT fields by @szarnyasg in https://github.com/duckdb/duckdb/pull/18098
Don't throw InternalException in Sort::Sink by @lnkuiper in https://github.com/duckdb/duckdb/pull/18105
ci: build duckdb against the latest emscripten by @cpcloud in https://github.com/duckdb/duckdb/pull/18110
[chore] Merge v1.3-ossivalis on main by @carlopi in https://github.com/duckdb/duckdb/pull/18109
Update description of 'arrow_lossless_conversion' by @szarnyasg in https://github.com/duckdb/duckdb/pull/18046
Internal #3273: Window Task Generation by @hawkfish in https://github.com/duckdb/duckdb/pull/18113
set ::error:: annotations for test runners by @hmeriann in https://github.com/duckdb/duckdb/pull/18072
Improve sort key comparison performance by @lnkuiper in https://github.com/duckdb/duckdb/pull/18131
Add support for MERGE INTO by @Mytherin in https://github.com/duckdb/duckdb/pull/18135
Detect when updates have no effect, and skip performing the actual updates if we encounter these nop updates by @Mytherin in https://github.com/duckdb/duckdb/pull/18144
Add support for AdbcConnectionGetObjects(table_type) by @kou in https://github.com/duckdb/duckdb/pull/18066
Issue #17683: TIME_NS Compilation by @hawkfish in https://github.com/duckdb/duckdb/pull/18053
Implement replace_type function by @lnkuiper in https://github.com/duckdb/duckdb/pull/18077
Bump spatial again: include re-linking for handling global objects in Wasm by @carlopi in https://github.com/duckdb/duckdb/pull/18170
Resolve some small build issues by @madscientist in https://github.com/duckdb/duckdb/pull/18162
fix typo by @felixhummel in https://github.com/duckdb/duckdb/pull/18165
Avoid realloc in CSV writer by @lnkuiper in https://github.com/duckdb/duckdb/pull/18174
fix bug with allowed_paths by @samansmink in https://github.com/duckdb/duckdb/pull/18176
Reduce lock contention for the instance cache by @NiclasHaderer in https://github.com/duckdb/duckdb/pull/18079
Check if GetLastSegment is not nullptr in ColumnData::RevertAppend by @lnkuiper in https://github.com/duckdb/duckdb/pull/18171
[Profiling] Move the client context into more write functions by @taniabogatsch in https://github.com/duckdb/duckdb/pull/17875
Bump Julia to v1.3.2 by @hmeriann in https://github.com/duckdb/duckdb/pull/18185
Merge v1.3-ossivalis into main by @carlopi in https://github.com/duckdb/duckdb/pull/18188
Parquet reader logging by @lnkuiper in https://github.com/duckdb/duckdb/pull/18172
Add VS2019 compat flag to Python wheel build by @staticlibs in https://github.com/duckdb/duckdb/pull/18198
[Parquet][Dev] Update the vendored parquet.thrift to 3ce0760 by @Tishj in https://github.com/duckdb/duckdb/pull/18195
Two-rowID-leaf support in the conflict manager and general refactoring by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18194
More internal-linkage by @Maxxen in https://github.com/duckdb/duckdb/pull/18177
Temporary file encryption by @Mytherin in https://github.com/duckdb/duckdb/pull/18208
Adding temporary file encryption by @ccfelius in https://github.com/duckdb/duckdb/pull/18013
Skip logging test for smaller block sizes by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18201
ci(pyodide): enable WASM exceptions on the latest pyodide build by @cpcloud in https://github.com/duckdb/duckdb/pull/18173
Allow explicit compression for user types by @lnkuiper in https://github.com/duckdb/duckdb/pull/18219
Get type of encoded SortKey from TupleDataLayout by @lnkuiper in https://github.com/duckdb/duckdb/pull/18218
Improve Parquet reader NULL statistics and compress all-NULL columns using CompressedMaterialization by @lnkuiper in https://github.com/duckdb/duckdb/pull/18217
Internal #5264: NLJ Not Distinct by @hawkfish in https://github.com/duckdb/duckdb/pull/18216
Bug#18163 Fix STDDEV_SAMP undeterminism by @minaracic in https://github.com/duckdb/duckdb/pull/18210
[Parquet] Add read support for the VARIANT LogicalType by @Tishj in https://github.com/duckdb/duckdb/pull/18187
Track DataChunk memory usage in various places by @lnkuiper in https://github.com/duckdb/duckdb/pull/18191
Better NULL handling in TupleDataLayout by @lnkuiper in https://github.com/duckdb/duckdb/pull/18069
Dictionary functions by @lnkuiper in https://github.com/duckdb/duckdb/pull/18127
Add support for geoarrow encoded geometries in geoparquet files. by @cfis in https://github.com/duckdb/duckdb/pull/17942
Improve descriptions of thresholds vars affecting join algorithm selection by @TheHillBright in https://github.com/duckdb/duckdb/pull/17377
Connect relations that are not in a subgraph, but are still part of the new relation set by @Tmonster in https://github.com/duckdb/duckdb/pull/18182
[Fix] Don't write empty (partial) blocks for FSST dictionary compression by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18203
Slightly higher memory limit for test by @lnkuiper in https://github.com/duckdb/duckdb/pull/18235
Re-add string -> hugeint compressed materialization function by @lnkuiper in https://github.com/duckdb/duckdb/pull/18234
[Fix] Database path conflict resolution by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18247
Remove require block size from a batch of tests by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18242
Add nightly builds for out-of-tree python extension by @evertlammerts in https://github.com/duckdb/duckdb/pull/18239
Backport DB invalidation flag to ossivalis by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18244
Bump vcpkg-duckdb-ports and test extensions on Windows 10 default stdlib by @carlopi in https://github.com/duckdb/duckdb/pull/18205
Add type safety to FlatVector::GetData<T>, ConstantVector::GetData<T> and UnifiedVectorFormat::GetData<T> by @Mytherin in https://github.com/duckdb/duckdb/pull/18256
[Fix] Adjust test for smaller block sizes by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18255
Fix integer overflow in sequence vector by @xuke-hat in https://github.com/duckdb/duckdb/pull/18245
fixes for some minor llvm 20 complaints by @hannes in https://github.com/duckdb/duckdb/pull/18257
update run_extension_medata_tests.sh by @hmeriann in https://github.com/duckdb/duckdb/pull/17976
Bunch of loosely connected test/CI fixes by @carlopi in https://github.com/duckdb/duckdb/pull/18254
disable WebAssembly duckdb-wasm builds job in NightlyTests triggered by 'workflow_dispatch' event by @hmeriann in https://github.com/duckdb/duckdb/pull/18129
Allow for static libs from extension dependencies to be bundled by @abramk in https://github.com/duckdb/duckdb/pull/18226
Fix dictionary-related assertions by @lnkuiper in https://github.com/duckdb/duckdb/pull/18260
Fixes for gcc 15 by @hannes in https://github.com/duckdb/duckdb/pull/18261
Reduce copy in Vector::Reinterpret by @xuke-hat in https://github.com/duckdb/duckdb/pull/18264
[Parquet] Add read support for the VARIANT LogicalType (with shredded encoding) by @Tishj in https://github.com/duckdb/duckdb/pull/18224
Expanded autocomplete suggestions by @Dtenwolde in https://github.com/duckdb/duckdb/pull/18243
Support HUGEINT in printf and format by @xuke-hat in https://github.com/duckdb/duckdb/pull/13277
Move aarch64 / arm64 to native github runner by @evertlammerts in https://github.com/duckdb/duckdb/pull/18269
Bump vcpkg-duckdb-ports to solve OSX linking by @carlopi in https://github.com/duckdb/duckdb/pull/18268
Add support for RETURNING to MERGE INTO by @Mytherin in https://github.com/duckdb/duckdb/pull/18271
Use set for row ID scanning during index scans by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18274
Use DuckDB cast infrastructure in fmt for new uhugeint/hugeint code by @Mytherin in https://github.com/duckdb/duckdb/pull/18275
[Fix] Adjust test to run with different block sizes by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18277
Use FromEpochSeconds instead of FromTimeT in FileSystem::GetLastModifiedTime by @lnkuiper in https://github.com/duckdb/duckdb/pull/18281
Add target for installing Python deps. by @xevix in https://github.com/duckdb/duckdb/pull/18285
backport 'Unit Tester Configuration' pt2 by @c-herrewijn in https://github.com/duckdb/duckdb/pull/18282
backport 'Unit Tester Configuration' by @c-herrewijn in https://github.com/duckdb/duckdb/pull/18263
Fixup Main.yml for v1.3-ossivalis post https://github.com/duckdb/duckdb/pull/18282 by @carlopi in https://github.com/duckdb/duckdb/pull/18289
SHOW TABLES FROM by @xevix in https://github.com/duckdb/duckdb/pull/18179
[Unittester] Add autoloading option by @carlopi in https://github.com/duckdb/duckdb/pull/18290
Merge ossivalis into main by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18272
resolve hidden merge conflict with duplicate db name in json configs by @c-herrewijn in https://github.com/duckdb/duckdb/pull/18292
Bump vcpkg-duckdb-ports, now fixing also mingw by @carlopi in https://github.com/duckdb/duckdb/pull/18300
[Fix] Missing block when renaming fields by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18293
[Arrow] Fix unused static function warning by @Tishj in https://github.com/duckdb/duckdb/pull/18278
feat: Parquet extension add row_group_compressed_size by @mapleFU in https://github.com/duckdb/duckdb/pull/18294
[Parquet][Write] Fix timestamp sec writes to parquet by @Tishj in https://github.com/duckdb/duckdb/pull/18273
bump httpfs by @Tmonster in https://github.com/duckdb/duckdb/pull/18258
[Clang Tidy] Fix missing includes in patas_scan.hpp by @Tishj in https://github.com/duckdb/duckdb/pull/18276
New Arrow C-API by @pdet in https://github.com/duckdb/duckdb/pull/18246
Skip test/sql/copy/s3/url_encode.test due to httpfs update by @carlopi in https://github.com/duckdb/duckdb/pull/18317
Make storage-version a test parameter by @Mytherin in https://github.com/duckdb/duckdb/pull/18324
Backport #18254 by @carlopi in https://github.com/duckdb/duckdb/pull/18306
feat: making Parquet write RowGroup.total_compressed_size by @mapleFU in https://github.com/duckdb/duckdb/pull/18307
add the from-table-function as parameter to copy-from-bind by @peterboncz in https://github.com/duckdb/duckdb/pull/18004
Python external dispatch param fixes by @evertlammerts in https://github.com/duckdb/duckdb/pull/18343
Aarch64 backport by @evertlammerts in https://github.com/duckdb/duckdb/pull/18345
Fix debug error in join order optimizer by @Tmonster in https://github.com/duckdb/duckdb/pull/18344
[Fix] Block verification for add and drop field info by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18302
download Real Nest data in quiet mode by @hmeriann in https://github.com/duckdb/duckdb/pull/18346
Fix condition indexes in join filter pushdown by @Damon07 in https://github.com/duckdb/duckdb/pull/18341
[unittest] - fix doubled error headers on Unexpected failure by @hmeriann in https://github.com/duckdb/duckdb/pull/18314
Extend PEG parser grammar by @Dtenwolde in https://github.com/duckdb/duckdb/pull/18221
[C API] Expose expressions and use them in scalar function binding by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18142
Restore OSX tests, moving them to single --autoloading available step by @carlopi in https://github.com/duckdb/duckdb/pull/18335
Add support for checkpointing in-memory tables by @Mytherin in https://github.com/duckdb/duckdb/pull/18348
Revert "[unittest] - fix doubled error headers on Unexpected failure" by @Mytherin in https://github.com/duckdb/duckdb/pull/18355
Python external dispatch param fixes by @evertlammerts in https://github.com/duckdb/duckdb/pull/18359
Re-enable url-encode test by @Tmonster in https://github.com/duckdb/duckdb/pull/18360
Enable stack traces on linux for bundled libraries by @taniabogatsch in https://github.com/duckdb/duckdb/pull/18363
Split up out-of-tree extensions into separate files, and allow out-of-tree extensions to be built using BUILD_EXTENSIONS={ext_name} by @Mytherin in https://github.com/duckdb/duckdb/pull/18357
Pass AttachOptions to attach method, and turn StorageExtensionInfo into an optional_ptr by @Mytherin in https://github.com/duckdb/duckdb/pull/18368
Merge v1.3-ossivalis into main by @carlopi in https://github.com/duc