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Direct WHERE predicate fails with TOO_FEW_ARGUMENTS_FOR_FUNCTION, while equivalent subquery form succeeds

potential bugTo be reviewed by developers and confirmed/rejected.To be reviewed by developers and confirmed/rejected.

Status: Open.

#99832 In ClickHouse/ClickHouse;

· Manuel-Neuer1 opened on Mar 18, 2026

[CI crash] Double deletion of MergeTreeDataPartCompact

crash-ci

Status: Open.

#99830 In ClickHouse/ClickHouse;

· robot-ch-test-poll4 opened on Mar 18, 2026

Server crashes (std::terminate) on role change when disallow_config_defined_profiles_for_sql_defined_users is enabled

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

crashCrash / segfault / abortCrash / segfault / abort

Status: Open.

#99810 In ClickHouse/ClickHouse;

· zlareb1 opened on Mar 17, 2026

Bzip2ReadBuffer throws UNEXPECTED_END_OF_FILE on empty stream (e.g. 404 URL with http_skip_not_found_url_for_globs)

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

Status: Open.

#99806 In ClickHouse/ClickHouse;

· zlareb1 opened on Mar 17, 2026

LowCardinality(Nullable(T)) query parameter does not default to NULL when omitted

potential bugTo be reviewed by developers and confirmed/rejected.To be reviewed by developers and confirmed/rejected.

Status: Open.

#99805 In ClickHouse/ClickHouse;

· zlareb1 opened on Mar 17, 2026

[CI crash] Double deletion of MergeTreeDataPartCompact in multi_index

crash-ci

Status: Open.

#99799 In ClickHouse/ClickHouse;

· robot-clickhouse-ci-1 opened on Mar 17, 2026

[CI crash] S3 PutObject request failed during backup

crash-ci

Status: Open.

#99798 In ClickHouse/ClickHouse;

· robot-clickhouse-ci-1 opened on Mar 17, 2026

[CI crash] Exception during expression transformation in pipeline execution

crash-ci

Status: Open.

#99797 In ClickHouse/ClickHouse;

· robot-clickhouse-ci-1 opened on Mar 17, 2026

Reduce code bloat in callOnIndexAndDataType type-dispatch functions

performance

Status: Open.

#99792 In ClickHouse/ClickHouse;

· Algunenano opened on Mar 17, 2026

WASM UDF function are not supported in Materialized VIEW

feature

Status: Open.

#99789 In ClickHouse/ClickHouse;

· UnamedRus opened on Mar 17, 2026

Statistics for insert not recorded since 26.2

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

v26.2-affected

Status: Open.

#99758 In ClickHouse/ClickHouse;

· rkozlo opened on Mar 17, 2026

Empty nullable tuples read back as null values

fuzzProblem found by one of the fuzzersProblem found by one of the fuzzers

potential bugTo be reviewed by developers and confirmed/rejected.To be reviewed by developers and confirmed/rejected.

Status: Open.

#99753 In ClickHouse/ClickHouse;

· PedroTadim opened on Mar 17, 2026