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ColumnArray::AppendAsColumn silently accepts a wrong-typed element column, writes zero data bytes and desynchronizes the native block stream

Status: Open.

#543In ClickHouse/clickhouse-cpp;

· claude opened on Aug 4, 2026

[backfill: ClickHouse/clickhouse-cpp] CreateColumnByType fails for SimpleAggregateFunction with non-terminal inner type (e.g. LowCardinality)

Status: Open.

#540In ClickHouse/clickhouse-cpp;

· alex-clickhouse opened on Jul 29, 2026

Build fails with GCC 16 due to -Werror=array-bounds false positive in ColumnBool constructor

Status: Open.

Bug

#524In ClickHouse/clickhouse-cpp;

· pavel-odintsov opened on Jun 26, 2026

Incorrect byte order conversion in ColumnIPv4::Append() overloads

Status: Open.

#521In ClickHouse/clickhouse-cpp;

· farva7er opened on Jun 17, 2026

Reading LowCardinality(Nullable(String)) column is not supported (for the data received from ClickHouse)

Status: Open.

#504In ClickHouse/clickhouse-cpp;

· rklepov opened on May 30, 2026

Socket closed without shutdown() causes TIME_WAIT accumulation and data loss risk

Status: Open.

Bug

#488In ClickHouse/clickhouse-cpp;

· jyberg opened on Apr 22, 2026

SocketInput::DoRead reports stale errno on clean connection close

Status: Open.

#487In ClickHouse/clickhouse-cpp;

· jyberg opened on Apr 22, 2026

Blocking socket during handshake allows denial of service via partial TCP message

Status: Open.

#486In ClickHouse/clickhouse-cpp;

· jyberg opened on Apr 22, 2026

Add GetString() to additional column types

enhancementNew feature or requestNew feature or request

pg_clickhouseNeeded by the pg_clickhouse PostgreSQL FDWNeeded by the pg_clickhouse PostgreSQL FDW

Status: Open.

#479In ClickHouse/clickhouse-cpp;

· iskakaushik opened on Apr 10, 2026

Add NewColumn() to ColumnArray

enhancementNew feature or requestNew feature or request

pg_clickhouseNeeded by the pg_clickhouse PostgreSQL FDWNeeded by the pg_clickhouse PostgreSQL FDW

Status: Open.

#478In ClickHouse/clickhouse-cpp;

· iskakaushik opened on Apr 10, 2026

Is it possible to use exception handler with insert table with block?

Status: Open.

#460In ClickHouse/clickhouse-cpp;

· sabudilovskiy opened on Jan 28, 2026

ColumnLowCardinalityT fail in constructor

Status: Open.

#457In ClickHouse/clickhouse-cpp;

· sabudilovskiy opened on Dec 21, 2025