Fix min/max value in Iceberg writes

[ianton-ru]

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 min/max value in Iceberg writes

Documentation entry for user-facing changes

During writing in Iceberg table ClickHouse incorrectly counts minimal and maximal values for columns.
As result min/max puning works incorrectly, cost column optimization (setting allow_experimental_iceberg_read_optimization) also makes incorrect columns.

Reproduced in upstream 25.8 LTS (25.8.12.129).

In 25.9 code was refactored, in new variant min/max counted correctly.

CI/CD Options

Exclude tests:

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

Regression jobs to run:

• Fast suites (mostly <1h)
• Aggregate Functions (2h)
• Alter (1.5h)
• Benchmark (30m)
• ClickHouse Keeper (1h)
• Iceberg (2h)
• LDAP (1h)
• Parquet (1.5h)
• RBAC (1.5h)
• SSL Server (1h)
• S3 (2h)
• Tiered Storage (2h)

[github-actions]

Workflow [PR], commit [ad27259]

[Enmk]

LGTM

[zvonand]

I assume 03644_object_storage_correlated_subqueries fails are not related?

[ianton-ru]

I assume 03644_object_storage_correlated_subqueries fails are not related?

@zvonand Yes, it is unrelated.
Looks like allow_experimental_correlated_subqueries feature was backported in 25.8
f796fe7
before (without) test fix
ClickHouse@0e2c5b0
(ORDER BY required)

[DimensionWieldr]

Verification test: iceberg writes minmax

This test reproduces a bug where ClickHouse incorrectly displays data when selecting after an insert.

The test creates a partitioned Iceberg table, inserts data using INSERT INTO, and verifies the data can be read back correctly. This is a sanity check that min/max bounds are calculated correctly during writes, enabling proper min/max pruning for subsequent queries.

Verification:

On 25.8.9.20496.altinityantalya, all checks failed
With PR build, all checks passed

[ianton-ru]

ClickHouse#91589

[ianton-ru]

In upstream is not reproduced from version 25.9+