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Cherry pick #94095 to 25.12: Fix accuracy of uniqTheta when using UInt8 aggregation keys in parallel#94205

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robot-clickhouse-ci-2 merged 3 commits intobackport/25.12/94095from
cherrypick/25.12/94095
Jan 14, 2026
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Cherry pick #94095 to 25.12: Fix accuracy of uniqTheta when using UInt8 aggregation keys in parallel#94205
robot-clickhouse-ci-2 merged 3 commits intobackport/25.12/94095from
cherrypick/25.12/94095

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Original pull-request #94095

Do not merge this PR manually

This pull-request is a first step of an automated backporting.
It contains changes similar to calling git cherry-pick locally.
If you intend to continue backporting the changes, then resolve all conflicts if any.
Otherwise, if you do not want to backport them, then just close this pull-request.

The check results does not matter at this step - you can safely ignore them.

Troubleshooting

If the conflicts were resolved in a wrong way

If this cherry-pick PR is completely screwed by a wrong conflicts resolution, and you want to recreate it:

  • delete the pr-cherrypick label from the PR
  • delete this branch from the repository

You also need to check the Original pull-request for pr-backports-created label, and delete if it's presented there

The PR source

The PR is created in the CI job

azat added 3 commits January 13, 2026 21:25
This is the correct value, since uniqExact gives the same (last values
are for uniqExact):

    5      10      10      100     100     609     609     10      10      100     100     609     609     765
Fix accuracy of uniqTheta when using UInt8 aggregation keys in parallel
@robot-clickhouse-ci-2 robot-clickhouse-ci-2 added pr-cherrypick Cherry-pick of merge-commit before backporting. Do not use manually - automated use only! do not test disable testing on pull request pr-bugfix Pull request with bugfix, not backported by default labels Jan 14, 2026
@robot-clickhouse-ci-2 robot-clickhouse-ci-2 merged commit 58c411f into backport/25.12/94095 Jan 14, 2026
112 of 115 checks passed
@robot-clickhouse-ci-2 robot-clickhouse-ci-2 deleted the cherrypick/25.12/94095 branch January 14, 2026 16:16
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do not test disable testing on pull request pr-bugfix Pull request with bugfix, not backported by default pr-cherrypick Cherry-pick of merge-commit before backporting. Do not use manually - automated use only!

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3 participants