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Fix reading column that exists in subset of tables in Merge engine #80643

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@Avogar Avogar commented May 21, 2025

Changelog category (leave one):

  • Bug Fix (user-visible misbehavior in an official stable release)

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Fix incorrect result during reading column that exists in subset of tables in Merge engine.

Closes #76746

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  • Documentation is written (mandatory for new features)

@Avogar Avogar added the pr-must-backport Pull request should be backported intentionally. Use this label with great care! label May 21, 2025
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clickhouse-gh bot commented May 21, 2025

Workflow [PR], commit [76c28df]

@clickhouse-gh clickhouse-gh bot added the pr-bugfix Pull request with bugfix, not backported by default label May 21, 2025
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SaltTan commented May 21, 2025

will this fix #76746?

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Avogar commented May 21, 2025

Yes

@GrigoryPervakov GrigoryPervakov self-assigned this May 22, 2025
…ing_in_subset_of_tables.sql

Co-authored-by: Pervakov Grigorii <pervakov.grigory@gmail.com>
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New merge table gives possibly incorrect result
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