Support ext date types in DqMergeCh

[dahbka-lis]

Changelog entry

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Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

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[github-actions]

🟢 2025-12-04 13:47:48 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-12-04 13:47:59 UTC Pre-commit check linux-x86_64-release-asan for 8712ce0 has started.
⚪ 2025-12-04 13:48:14 UTC Artifacts will be uploaded here
⚪ 2025-12-04 13:50:18 UTC ya make is running...
🟡 2025-12-04 14:55:59 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
12416	12328	0	67	10	11

🟢 2025-12-04 14:56:07 UTC Build successful.
🟢 2025-12-04 14:56:37 UTC ydbd size 3.8 GiB changed* by -112 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 4089911	merge: 8712ce0	diff	diff %
ydbd size	4 123 223 512 Bytes	4 123 223 400 Bytes	-112 Bytes	-0.000%
ydbd stripped size	1 531 161 144 Bytes	1 531 161 080 Bytes	-64 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[ydbot]

Run Extra Tests

Run additional tests for this PR. You can customize:

• Test Size: small, medium, large (default: all)
• Test Targets: any directory path (default: ydb/)
• Sanitizers: ASAN, MSAN, TSAN
• Coredumps: enable for debugging (default: off)
• Additional args: custom ya make arguments

[github-actions]

⚪ 2025-12-04 13:49:11 UTC Pre-commit check linux-x86_64-relwithdebinfo for 8712ce0 has started.
⚪ 2025-12-04 13:49:31 UTC Artifacts will be uploaded here
⚪ 2025-12-04 13:51:39 UTC ya make is running...
🟡 2025-12-04 15:21:15 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
40084	37222	0	2	2842	18

⚪ 2025-12-04 15:21:28 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-12-04 15:35:01 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
36 (only retried tests)	22	0	0	0	14

🟢 2025-12-04 15:35:07 UTC Build successful.
🟢 2025-12-04 15:35:30 UTC ydbd size 2.3 GiB changed* by 0 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 4089911	merge: 8712ce0	diff	diff %
ydbd size	2 463 956 400 Bytes	2 463 956 400 Bytes	0 Bytes	0.000%
ydbd stripped size	524 487 328 Bytes	524 487 328 Bytes	0 Bytes	0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[Copilot]

Pull request overview

This PR enables support for extended date types (Date32, Datetime64, Timestamp64, Interval64) in DQ Merge Connections by moving them from the unsupported to supported section in the type checking function.

• Moves four extended date type cases from unsupported to supported in IsTypeSupportedInMergeCn

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[github-actions]

Run-tests started

• Build Preset: relwithdebinfo
• Test Size: small,medium,large
• Test Targets: ydb/
• Collect Coredumps: true
• Commit: cd8e4e8
• Workflow run: link

⚪ 2025-12-04 14:58:47 UTC Artifacts will be uploaded here
⚪ 2025-12-04 14:59:58 UTC ya make is running...

[github-actions]

⚪ 2025-12-06 12:24:36 UTC Pre-commit check linux-x86_64-relwithdebinfo for 93ddb55 has started.
⚪ 2025-12-06 12:24:54 UTC Artifacts will be uploaded here
⚪ 2025-12-06 12:27:09 UTC ya make is running...
🟡 2025-12-06 14:03:46 UTC Some tests failed, follow the links below. Going to retry failed tests...

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
40160	37229	0	4	2906	21

⚪ 2025-12-06 14:04:00 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-12-06 14:15:51 UTC Tests successful.

Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
48 (only retried tests)	36	0	0	0	12

🟢 2025-12-06 14:15:59 UTC Build successful.
🟢 2025-12-06 14:16:20 UTC ydbd size 2.3 GiB changed* by 0 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 25029c1	merge: 93ddb55	diff	diff %
ydbd size	2 466 169 640 Bytes	2 466 169 640 Bytes	0 Bytes	0.000%
ydbd stripped size	524 846 208 Bytes	524 846 208 Bytes	0 Bytes	0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2025-12-06 12:24:37 UTC Pre-commit check linux-x86_64-release-asan for 93ddb55 has started.
⚪ 2025-12-06 12:24:55 UTC Artifacts will be uploaded here
⚪ 2025-12-06 12:27:04 UTC ya make is running...
🟡 2025-12-06 13:33:37 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
12427	12348	0	64	8	7

🟢 2025-12-06 13:33:45 UTC Build successful.
🟢 2025-12-06 13:34:15 UTC ydbd size 3.8 GiB changed* by -112 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 25029c1	merge: 93ddb55	diff	diff %
ydbd size	4 127 824 880 Bytes	4 127 824 768 Bytes	-112 Bytes	-0.000%
ydbd stripped size	1 532 696 344 Bytes	1 532 696 280 Bytes	-64 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[ydbot]

Backport

To backport this PR, click the button next to the target branch and then click "Run workflow" in the Run Actions UI.

Branch	Run
stable-25-2, stable-25-2-1, stable-25-3, stable-25-3-1
stable-25-3, stable-25-3-1
stable-25-3

[ydbot]

Backport results:

• stable-25-3: PR [Backport stable-25-3] PR #30140: Support ext date types in DqMergeCh #30266
• stable-25-3-1: PR [Backport stable-25-3-1] PR #30140: Support ext date types in DqMergeCh #30267

workflow run