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…next commit) --- Original cherry-pick message follows: Merge pull request #2471 from Altinity/bugfix/antalya-26.6/fix-union-hostname-server-constant Do not reuse a server constant built in another scope. # Conflicts: # src/Analyzer/Resolve/resolveFunction.cpp
Kept the antalya-26.8 cache condition (`isStateful` / `isDeterministicInScopeOfQuery`), which replaced the hardcoded `getSetting` / `rowNumberInAllBlocks` name checks, and added the PR's `isServerConstant` exclusion and comment on top of it.
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Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
Fix
UNIONof a local query andcluster()(or another cluster function) throwingNUMBER_OF_COLUMNS_DOESNT_MATCHorTHERE_IS_NO_COLUMNonGROUP BY hostName. A server constant built on the local branch was reused for the cluster branch and folded to the initiator value. Each scope now builds its own value, so shards report their ownhostName,serverUUID,tcpPort, and the other server constants (#2471 by @ianton-ru).CI/CD Options
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Regression jobs to run:
Cherry-picked from #2471.
hostNamecapturedContext::isDistributedfrom the firstUNIONbranch and was then folded on a cluster branch, so theGROUP BYheaders no longer matched.Solved #1181
Documentation entry for user-facing changes
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