What's Changed

Exciting New Features ✨

• feat(query): support batched materialized view refresh by @sundy-li in #20469
• feat: rewrite decimal stats on metadata-only alter by @youngsofun in #20446

Thoughtful Bug Fix 🔧

• fix(query): support expressions in bracket accessors by @KKould in #20449
• fix(storage): preserve Parquet schema annotations by @youngsofun in #20424
• fix(query): preserve nullable reflexive equality filters by @youngsofun in #20390
• fix(query): use lazy partitions for initial materialized view refresh by @dqhl76 in #20467
• fix(storage): preserve change tracking correctness across counter resets by @zhyass in #20481

Code Refactor 🎉

• refactor(storage): reduce clustering information metadata overhead by @zhyass in #20465
• refactor(query): remove proxy table engine by @sundy-li in #20441
• refactor: remove Lance unload support by @youngsofun in #20463

Build/Testing/CI Infra Changes 🔌

• ci(query): cover cross-type nullable correlated joins by @youngsofun in #20409

Others 📒

• chore: meta: upgrade server and client to adjust logging level by @drmingdrmer in #20471

Full Changelog: v1.2.940-nightly...v1.2.941-nightly

What's Changed

Exciting New Features ✨

• feat(query): unify vacuum commands and execution by @SkyFan2002 in #20428

Thoughtful Bug Fix 🔧

• fix(query): support Databend Arrow types in WASM UDFs by @youngsofun in #20456
• fix(planner): honor query settings in folding and statistics by @forsaken628 in #20448
• fix(storage): avoid collecting vacuum2 result files by @dantengsky in #20419
• fix(storage): read virtual columns when prewhere keeps no rows of a block by @zhang2014 in #20470

Others 📒

• chore: trim dependencies and improve development cleanup by @zhyass in #20461

Full Changelog: v1.2.939-nightly...v1.2.940-nightly

What's Changed

Exciting New Features ✨

• refactor(storage): refine recluster levels and log level IO by @zhyass in #20443

Thoughtful Bug Fix 🔧

• fix(query): add partition write regression tests by @KKould in #20426
• fix(query): correct date interval arithmetic and bounds (#20416) by @TCeason in #20425
• fix(query): avoid outer join error panic by @sundy-li in #20452
• fix(query): prevent hash exchange hangs after early receiver closure by @dqhl76 in #20450
• fix(query): disable join selectivity backoff and align propagation by @forsaken628 in #20453

Build/Testing/CI Infra Changes 🔌

• chore(ci): bump linux build timeout from 60 to 90 minutes by @TCeason in #20451

Others 📒

• chore(query): remove Aggregating Index by @b41sh in #20447
• chore: Improve Virtual Column Block Meta Generation by @b41sh in #20348

Full Changelog: v1.2.938-nightly...v1.2.939-nightly

What's Changed

Exciting New Features ✨

• feat(query): push aggregate rank limit boundaries into fuse scan by @dqhl76 in #20406
• feat(storage): support concurrent recluster tasks by @zhyass in #20413
• feat(query): combine multi-condition join estimates with exponential backoff by @forsaken628 in #20414

Thoughtful Bug Fix 🔧

• fix(query): avoid UTF-8 boundary panic in datetime domain folding by @TCeason in #20430
• fix(storage): speed up ngram index building by @KKould in #20435
• fix(storage): avoid overflow in block thresholds by @zhang2014 in #20439

Code Refactor 🎉

• refactor(storage): scale clustering information diagnostics by @zhyass in #20411
• refactor(storage): prepare range index domains once by @zhang2014 in #20438
• refactor(query): bound merge and replace block mutation workers by @zhang2014 in #20440

Others 📒

• chore(storage): bump OpenDAL to 0.55 and Remove Hive catalog by @b41sh in #20434
• chore: meta: upgrade databend-meta to v260629.3.0, drop tonic 0.13 by @drmingdrmer in #20431
• chore(sqllogic): cover Databend Cloud tutorial SQL by @TCeason in #20433

Full Changelog: v1.2.937-nightly...v1.2.938-nightly

What's Changed

Exciting New Features ✨

• feat(storage): optimize ngram bloom index building by @KKould in #20410
• feat(query): Inverted Index support Japanese language tokenizer by @b41sh in #20412
• feat(query): support cost-based MV scan routing by @sundy-li in #20422
• feat(fuse): support Hilbert reclustering by @zhyass in #20313

Thoughtful Bug Fix 🔧

• fix(query): cache materialized view rewrites by @sundy-li in #20415
• fix(query): avoid default context in outer join rewrite by @dantengsky in #20292
• fix(query): preserve provider storage for data shares by @SkyFan2002 in #20429

Code Refactor 🎉

• refactor(storage): stream vacuum2 block gc by @dantengsky in #20402

Full Changelog: v1.2.936-nightly...v1.2.937-nightly

Full Changelog: v1.2.937-nightly...v1.2.925-patch-13

What's Changed

Exciting New Features ✨

• feat(sql): use typed bounds for histogram statistics by @forsaken628 in #20317
• feat: support data sharing by @SkyFan2002 in #20053
• feat(query): support cascading hierarchical grouping sets by @forsaken628 in #20249
• feat(query): choose materialized views by rewrite cost by @sundy-li in #20337

Thoughtful Bug Fix 🔧

• fix(query): fix distributed grouping sets with materialized CTEs by @forsaken628 in #20328
• fix(query): track common hashtable allocator memory by @dqhl76 in #20321
• fix(storage): stream small parquet file batches by @youngsofun in #20356
• fix(query): make number string casts deterministic by @forsaken628 in #20352
• fix: avoid mechanically removing Exchange operators by @SkyFan2002 in #20371
• fix(query): skip hash join probe when build is empty by @dqhl76 in #20355
• fix(query): accelerate multi-key hash shuffle by @dantengsky in #20331
• fix(query): use structural keys for evaluator CSE by @KKould in #20374
• fix(query): preserve cast comparison operand order by @youngsofun in #20375
• fix(query): match empty LIKE patterns exactly by @KKould in #20363
• fix(query): re-sort re-aggregated MV blocks before recluster serialization by @zhang2014 in #20378
• fix(query): avoid decimal join keys for integer-to-string casts by @dantengsky in #20333
• fix(query): record early client close as LogType::Closed by @youngsofun in #20376
• fix(query): count result_rows when produced, not when consumed by @youngsofun in #20377
• fix(query): canonicalize keys before deriving join stats by @youngsofun in #20393
• fix(meta): avoid embedded service port races by @forsaken628 in #20391
• fix: reduce vacuum2 memory during gc by @dantengsky in #20394
• fix(storage): bound parquet row group bytes by @dqhl76 in #20387
• fix(runner): cloud build workflow remove spot instance by @hantmac in #20401
• fix(query): flatten lambdas in correlated subqueries by @youngsofun in #20389
• fix(query): preserve null validity in correlated joins by @sundy-li in #20354
• fix(query): expose unpivot columns in query block by @KKould in #20396
• fix(query): avoid parsing WASM UDF code as UTF-8 by @youngsofun in #20404

Code Refactor 🎉

• refactor(query): skip unnecessary CTE column scan by @KKould in #20344
• refactor(query): avoid repeated subquery traversal by @KKould in #20334
• refactor(storage): avoid materializing recluster endpoints by @KKould in #20372
• refactor(query): avoid redundant optimizer expression clones by @KKould in #20346
• refactor(query): consume expressions in constant folder by @KKould in #20373
• refactor(query): avoid eager collection in hot paths by @KKould in #20384

Others 📒

• chore(ci): Change the metachaos notification from a failure-style alert to a warning-style alert by @TCeason in #20388

Full Changelog: v1.2.935-nightly...v1.2.936-nightly

What's Changed

Exciting New Features ✨

• feat(query): add enable_materialized_view_rewrite setting by @sundy-li in #20336
• feat(query): reaggregate aggregate MV blocks on compact by @sundy-li in #20340

Thoughtful Bug Fix 🔧

• fix(storage): disable automatic HTTP decompression by @youngsofun in #20339
• fix(query): spill window partitions during output by @dqhl76 in #20343
• fix(query): quote nested SQL in procedure expressions with SQL rules by @forsaken628 in #20338
• fix(query): ignore system sources in lineage by @youngsofun in #20349
• fix(query): refresh ATTACH table schema in system.columns/statistics by @TCeason in #19966
• fix(storage): restore node-global memory budget for recluster by @zhyass in #20360

Code Refactor 🎉

• refactor(query): carry scalar function return types by @KKould in #20320
• refactor(query): optimize column collection and replacement by @KKould in #20345
• refactor: stage decompressor split output. by @youngsofun in #20341

Full Changelog: v1.2.934-nightly...v1.2.935-nightly

What's Changed

Exciting New Features ✨

• feat(query): materialized view support rewrite rule by @b41sh in #20302
• feat(query): refresh lineage for existing views by @youngsofun in #20315
• feat(query): materialized view support set|unset table option and comment by @TCeason in #20306
• feat(query): add partial evaluation policy by @sundy-li in #20318
• feat(query): configure lineage independently by @youngsofun in #20322
• feat(query): extract explicit materialized CTE lineage by @youngsofun in #20327

Thoughtful Bug Fix 🔧

• fix(query): skip inactive rows in vectorized LIKE by @dantengsky in #20211
• fix(query): propagate suppressed row errors to is_not_error through nested calls by @junli1026 in #20305
• fix(query): avoid oversized row output buffer allocations by @dqhl76 in #20325
• fix(query): accelerate runtime bloom filter checks by @dantengsky in #20323
• fix(stage): improve Parquet unload compatibility with older readers by @youngsofun in #20326

Code Refactor 🎉

• refactor(sql): move join statistics tests to SQL goldens by @forsaken628 in #20293
• refactor(query): move lambda detection out of parser by @KKould in #20295
• refactor(query): split datetime helpers by responsibility by @forsaken628 in #20190

Full Changelog: v1.2.933-nightly...v1.2.934-nightly

What's Changed

Exciting New Features ✨

• feat(query): extract query lineage from plans by @youngsofun in #20201
• feat(query): add history-based data lineage by @youngsofun in #20235
• feat(query): add aggregate state merge combinators by @sundy-li in #20257
• feat(query): add json_path_transform lambda function by @zhang2014 in #20281
• feat(query): extend eliminate_self_join to support table-scan with pushed predicates by @junli1026 in #20284
• feat(query): Materialized View support hybrid reads by @b41sh in #20276
• feat(query): add materialized view DDL and maintenance lifecycle by @TCeason in #20266
• feat(fuse): add Hilbert clustering metadata and statistics by @zhyass in #20291
• feat(query): add direct lineage neighbor lookup by @youngsofun in #20300
• feat(query): support catalog and view table fields by @youngsofun in #20304
• feat(query): retain lineage history by default by @youngsofun in #20311
• feat: benchmark: consolidate the meta benchmarks into one harness by @drmingdrmer in #20314
• feat(query): extend runtime filters to single-column probe expressions by @SkyFan2002 in #20301

Thoughtful Bug Fix 🔧

• fix(storage): map missing NO_CHECK snapshot 404 to TableHistoricalDataNotFound by @dantengsky in #20265
• fix(query): skip task cleanup on unassigned nodes by @KKould in #20263
• fix(sql): preserve async function determinism by @KKould in #19718
• fix(query): preserve parquet small-file compression ratio by @dqhl76 in #20283
• fix(storage): coalesce partitioned hash writes by @KKould in #20275
• fix(query): atomically enable stream change tracking by @zhyass in #20272
• fix(query): avoid repeated recluster vacuum by @zhyass in #20285
• fix(query): avoid cache population in mutation row fetch by @sundy-li in #20288
• fix(query): route mutations with internal columns through table scans by @zhyass in #20269
• fix(query): normalize procedure signatures in RBAC lookups by @TCeason in #20297
• fix(query): use current time for selectivity estimation by @dantengsky in #20298
• fix(iceberg): refresh expiring table credentials by @sundy-li in #20303
• fix(query): bound final aggregate finish memory by @dqhl76 in #20316
• fix(fuse): recheck runtime TopN during block reads by @zhang2014 in #20309

Code Refactor 🎉

• refactor(query): reduce expression analysis allocation by @KKould in #20256
• refactor(query): reshape lineage history metadata by @youngsofun in #20289
• refactor(query): clarify get lineage object output by @youngsofun in #20296

Documentation 📔

• docs: guide agents to defer collection by @KKould in #20287

Others 📒

• chore(query): Add fuse_virtual_column_build table function by @b41sh in #20299
• chore: Enable Materialized View Features for Enterprise Edition by @b41sh in #20307

Full Changelog: v1.2.932-nightly...v1.2.933-nightly