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chore(query): suppress the optimizer from choosing a broadcast join

pr-chorethis PR only has small changes that no need to record, like coding styles.this PR only has small changes that no need to record, like coding styles.

Status: Open (in progress).

databendlabs/databendnumber 18914

#18914 In databendlabs/databend;

· zhang2014 opened on Nov 2, 2025

fix(query): allow merging adjacent eval scalar operators that have dependencies

ci-cloudBuild docker image for cloud testBuild docker image for cloud test

pr-bugfixthis PR patches a bug in codebasethis PR patches a bug in codebase

Status: Draft (not ready).

databendlabs/databendnumber 18905

#18905 In databendlabs/databend;

· zhang2014 opened on Oct 30, 2025

refactor(query): add hybrid hash join

pr-refactorthis PR changes the code base without new features or bugfixthis PR changes the code base without new features or bugfix

Status: Draft (not ready).

databendlabs/databendnumber 18900

#18900 In databendlabs/databend;

· zhang2014 opened on Oct 29, 2025

fix(query): fix panic if miss match empty data type

pr-bugfixthis PR patches a bug in codebasethis PR patches a bug in codebase

Status: Merged (completed).

databendlabs/databendnumber 18894

#18894 In databendlabs/databend;

· by zhang2014 was closed on Oct 27, 2025

refactor(query): enable grace hash join if force join spill data

pr-refactorthis PR changes the code base without new features or bugfixthis PR changes the code base without new features or bugfix

Status: Merged (completed).

databendlabs/databendnumber 18878

#18878 In databendlabs/databend;

· by zhang2014 was closed on Oct 24, 2025

refactor(query): add left join for experimental new hash join

ci-benchmarkBenchmark: run all testBenchmark: run all test

pr-refactorthis PR changes the code base without new features or bugfixthis PR changes the code base without new features or bugfix

Status: Merged (completed).

databendlabs/databendnumber 18814

#18814 In databendlabs/databend;

· by zhang2014 was closed on Oct 6, 2025

refactor(query): add new experimental hash join for inner join

ci-benchmarkBenchmark: run all testBenchmark: run all test

pr-refactorthis PR changes the code base without new features or bugfixthis PR changes the code base without new features or bugfix

Status: Merged (completed).

databendlabs/databendnumber 18783

#18783 In databendlabs/databend;

· by zhang2014 was closed on Sep 30, 2025

fix(query): fix data lost caused by nullable in spill

ci-benchmarkBenchmark: run all testBenchmark: run all test

ci-cloudBuild docker image for cloud testBuild docker image for cloud test

pr-bugfixthis PR patches a bug in codebasethis PR patches a bug in codebase

Status: Merged (completed).

databendlabs/databendnumber 18766

#18766 In databendlabs/databend;

· by zhang2014 was closed on Sep 24, 2025

refactor(query): add async buffer for spill data

pr-refactorthis PR changes the code base without new features or bugfixthis PR changes the code base without new features or bugfix

Status: Merged (completed).

databendlabs/databendnumber 18758

#18758 In databendlabs/databend;

· by zhang2014 was closed on Sep 21, 2025

refactor(query): stream style block writer for hash join spill

ci-benchmarkBenchmark: run all testBenchmark: run all test

ci-cloudBuild docker image for cloud testBuild docker image for cloud test

pr-refactorthis PR changes the code base without new features or bugfixthis PR changes the code base without new features or bugfix

Status: Merged (completed).

databendlabs/databendnumber 18742

#18742 In databendlabs/databend;

· by zhang2014 was closed on Sep 20, 2025

refactor(query): refactor the join partition to reduce memory amplification

ci-benchmarkBenchmark: run all testBenchmark: run all test

ci-cloudBuild docker image for cloud testBuild docker image for cloud test

pr-refactorthis PR changes the code base without new features or bugfixthis PR changes the code base without new features or bugfix

Status: Merged (completed).

databendlabs/databendnumber 18732

#18732 In databendlabs/databend;

· by zhang2014 was closed on Sep 18, 2025

fix(query): add config to the embed mode to clarify this mode

pr-bugfixthis PR patches a bug in codebasethis PR patches a bug in codebase

Status: Merged (completed).

databendlabs/databendnumber 18710

#18710 In databendlabs/databend;

· by zhang2014 was closed on Sep 10, 2025