Initial version of DuckDB engine for MariaDB based on DuckDB 1.5.2.#4903

Merged

vuvova merged 114 commits into

MariaDB:11.4from

drrtuy:bb-11.4-duckdb

Jun 8, 2026

Commits on Feb 22, 2026

Port AliSQL DuckDB engine basics to MariaDB part 2
drrtuy
committed
fix(dml,duckdb): Set table->write_set bitmap in rnd_next to convert to MariaDB row properly.
drrtuy
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Commits on Mar 16, 2026

Commits on Mar 17, 2026

chore(deb): deb packaging utilities.
drrtuy
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Commits on Mar 18, 2026

fix(): a number of review fixes.
drrtuy
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Commits on Mar 19, 2026

Commits on Mar 27, 2026

Commits on Apr 3, 2026

Commits on Apr 5, 2026

chore(deb): packaging fixes.
drrtuy
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Commits on Apr 8, 2026

cleaner build output

LaGrunge
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drrtuy
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run_mtr.sh: MTR runnner

LaGrunge
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drrtuy
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fix(mtr): make 11 tests extern compatible

LaGrunge
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drrtuy
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fix(run_mtr.sh): fix noextern mode

LaGrunge
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drrtuy
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feat(tests): fuzzy search for menu

LaGrunge
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drrtuy
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fix(mtr): disabled warnings and fixed timezone in two MTR tests.
drrtuy
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Commits on Apr 14, 2026

Commits on Apr 15, 2026

Commits on Apr 19, 2026

chore(): README path update and conf file development leftovers cleanup.
drrtuy
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Commits on Apr 21, 2026

chore(): docs updates based on the recent changes.
drrtuy
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Commits on Apr 22, 2026

docs: add detailed analysis and work plan for 31 disabled tests

LaGrunge
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drrtuy
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fix(errors): use ER_DUCKDB_TABLE_STRUCT_INVALID for ALTER structural

LaGrunge
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drrtuy
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fix(mtr): update rename_duckdb_table result for new error codes

LaGrunge
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drrtuy
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docs: update disabled tests plan — 17/47 enabled, item 3 done

LaGrunge
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drrtuy
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fix(ddl): reject ALTER TABLE on tables without PK when require_primary_key=ON

LaGrunge
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drrtuy
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fix(mtr): enable create_table_constraint test

LaGrunge
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drrtuy
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fix(mtr): add test cleanup to restore database charset after tests

LaGrunge
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drrtuy
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docs: update plan — 19/47 enabled, add DuckDB upstream upgrade item

LaGrunge
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drrtuy
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feat(upstream): upgrade DuckDB submodule v1.3.2 → v1.5.2

LaGrunge
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drrtuy
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docs: update plan — DuckDB v1.5.2 done, add compound ALTER regression

LaGrunge
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drrtuy
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fix(ddl): execute compound ALTER operations separately for DuckDB v1.5

LaGrunge
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drrtuy
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fix(config): propagate appender_allocator_flush_threshold to DuckDB v1.5

LaGrunge
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drrtuy
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feat(pushdown): add MariaDB SQL compatibility macros and WITH ROLLUP rewrite

LaGrunge
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drrtuy
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feat(pushdown): add more MariaDB SQL compatibility macros

LaGrunge
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fix(decimal): map DECIMAL(>38) to DOUBLE, default use_double_for_decimal=TRUE

LaGrunge
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drrtuy
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fix(mtr): add have_duckdb.inc and max_allowed_packet to feature_duckdb_data_type

LaGrunge
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drrtuy
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feat(udf): register native DuckDB scalar function overloads for MariaDB compat

LaGrunge
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drrtuy
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feat(compat): improve bin/oct for string args, add hex(numeric), locate macro

LaGrunge
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drrtuy
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feat(compat): port full hex/oct/bin from AliSQL, add locate C++ UDF

LaGrunge
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drrtuy
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feat(compat): add mid() UDF, CONVERT→CAST rewrite in pushdown

LaGrunge
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drrtuy
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feat(pushdown): add CROSS JOIN, REGEXP, NOT REGEXP rewrites + mid UDF

LaGrunge
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drrtuy
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feat(compat): implement regexp_instr, regexp_replace, regexp_substr,

LaGrunge
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drrtuy
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feat(compat): add strcmp, substring_index, to_base64 macros, RLIKE

LaGrunge
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drrtuy
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feat(compat): override length(VARCHAR) and ascii(VARCHAR) for MariaDB

LaGrunge
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drrtuy
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feat(compat): addtime/subtime C++ UDFs, convert_tz macro, LIMIT and

LaGrunge
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drrtuy
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feat(compat): curdate/curtime macros, STRAIGHT_JOIN/index hints/LIMIT

LaGrunge
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drrtuy
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feat(compat): CURRENT_TIME(N)/CURRENT_DATE()/CURRENT_TIMESTAMP() rewrite,

LaGrunge
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drrtuy
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fix(rebase issues): Some tests are broken now, a big thanx

LaGrunge
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drrtuy
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fix(mtr): trim couple tests to pass on U24.04.
drrtuy
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chore(build): install build dependencies in build.sh.
drrtuy
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Commits on May 4, 2026

fix(build): now DuckDB core extensions are statically linked instead auto-loaded.
drrtuy
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Commits on May 13, 2026

Commits on May 24, 2026

Commits on May 25, 2026

feat(runtime): fiber runtime based on ASM borrowed from libmariadb + custom select_result_interceptor for DuckDB.
drrtuy
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Commits on May 26, 2026

feat(cej): MDB tables scan now uses mysql_execute_command to to leverage optimizer and various access paths for a scan.
drrtuy
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Commits on May 27, 2026

fix(cej): WHERE predicate now does not contain alias or table name in column idents.
drrtuy
committed

Commits on Jun 1, 2026

fix(cej): escape column names, remove bin objects from the repo, add tests.
drrtuy
committed

Commits on Jun 2, 2026

chore(test): fix flacky cross_join_where test.
drrtuy
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Commits on Jun 4, 2026

Commits on Jun 5, 2026

chore(): update documentation.
drrtuy
committed

Commits on Jun 6, 2026

Merge https://github.com/drrtuy/duckdb-engine into 11.4
vuvova
committed

Commits on Jun 7, 2026