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25.8 stable: lazy materialization better handles aliases if query_plan_merge_expressions=0 - #2732

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ilejn wants to merge 2 commits into
antalya-25.8from
bugfix/antalya-25.8/CH-544-fix
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ilejn wants to merge 2 commits into
antalya-25.8from
bugfix/antalya-25.8/CH-544-fix

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@ilejn

@ilejn ilejn commented Oct 28, 2026 •

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Follow up to #2560 ,
addresses #2560 (comment)

Changelog category (leave one):

  • Improvement

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

With query_plan_merge_expressions = 0, selecting only an ALIAS column with ORDER BY … LIMIT now reads its source lazily again.

Documentation entry for user-facing changes

...

CI/CD Options

Exclude tests:

  • Fast test
  • Integration Tests
  • Stateless tests
  • Stateful tests
  • Unit tests
  • Performance tests
  • Aarch64 tests
  • All with ASAN
  • All with TSAN
  • All with MSAN
  • All with UBSAN
  • All with Coverage
  • All Regression
  • Disable CI Cache

Regression jobs to run:

  • Fast suites (mostly <1h)
  • Aggregate Functions (2h)
  • Alter (1.5h)
  • Benchmark (30m)
  • CAS (content-addressed storage; Antalya only)
  • ClickHouse Keeper (1h)
  • Iceberg (2h)
  • LDAP (1h)
  • OAuth (5m)
  • Parquet (1.5h)
  • RBAC (1.5h)
  • SSL Server (1h)
  • S3 (2h)
  • S3 Export (2h)
  • Swarms (30m)
  • Tiered Storage (2h)

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Workflow [PR], commit [e394f5e]

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2 participants