Issues

• No serde helpers for arrays of temporal types: Array(Date32)/Array(DateTime64)/Array(Time64) cannot be deserialized into Vec<NaiveDate>/Vec<DateTime<Utc>>/Vec<Duration>

  ClickHouse/clickhouse-rs#509 · Filter by author claude opened on Nov 2, 2026

• Parameterized queries larger than 128 KiB fail since 0.15.3

  ClickHouse/clickhouse-rs#501 · Filter by author patrick-immometrica opened on Oct 25, 2026
  3

• Mid-stream exception block split across response chunks is mis-parsed or silently dropped (DetectDbException / extract_exception_new)

  ClickHouse/clickhouse-rs#498 · Filter by author claude opened on Oct 24, 2026

• Quadratic time in Query::bind() makes large parameterized queries (multi-row INSERT) very slow

  ClickHouse/clickhouse-rs#497 · Filter by author claude opened on Oct 22, 2026

• fetch_bytes("JSONEachRow"): in-band {"exception": ...} row from pre-25.11 servers is returned as data, no error

  ClickHouse/clickhouse-rs#492 · Filter by author claude opened on Oct 15, 2026

• twox-hash is declared with default features, which adds rand 0.10 beside rand 0.9

  ClickHouse/clickhouse-rs#491 · Filter by author MarcusKainth opened on Oct 14, 2026

• query: default Lz4 SELECTs are ~2x slower on main because the server compresses the HTTP response with LZ4HC (regression from #482)

  bug
  ClickHouse/clickhouse-rs#490 · Filter by author polyglotAI-bot opened on Oct 11, 2026

• Expose the ClickHouse exception code as structured data on Error

  ClickHouse/clickhouse-rs#479 · Filter by author ubiquitousbyte opened on Sep 26, 2026
  1

• Support configuring ClickHouse client puerly from URL

  enhancement
  ClickHouse/clickhouse-rs#467 · Filter by author qwolphin opened on Sep 5, 2026
  2

• Flaky test: opentelemetry::error_sets_span_status intermittently panics with "expected last span data"

  bug
  ClickHouse/clickhouse-rs#463 · Filter by author polyglotAI-bot opened on Aug 24, 2026

• Strongly typed server response error

  breakingenhancement
  Feature

  ClickHouse/clickhouse-rs#460 · Filter by author abonander opened on Aug 21, 2026

• RowCursor silently returns zero rows when every column is zero-width (Tuple())

  ClickHouse/clickhouse-rs#459 · Filter by author claude opened on Aug 18, 2026

• clickhouse-rust: Network("channel closed") on bulk insert (3000+ rows, 155 columns)

  bug
  ClickHouse/clickhouse-rs#437 · Filter by author snailwei opened on Jun 2, 2026
  3

• insert_metadata_cache is never invalidated

  bug
  ClickHouse/clickhouse-rs#432 · Filter by author stepancheg opened on May 25, 2026
  1

• Support Native format over HTTP

  enhancementfeature-completeness
  ClickHouse/clickhouse-rs#425 · Filter by author mshustov opened on May 17, 2026 · next
  1

• RFC: Breaking Inserter API Changes

  enhancement
  ClickHouse/clickhouse-rs#421 · Filter by author abonander opened on Apr 29, 2026
  3

• Recognize and support proxies

  enhancement
  Feature

  ClickHouse/clickhouse-rs#416 · Filter by author abonander opened on Apr 13, 2026

• Add Query::fetch_owned

  enhancement
  ClickHouse/clickhouse-rs#401 · Filter by author Yen opened on Mar 26, 2026
  2

• Include rows_before_limit_at_least in X-ClickHouse-Summary header

  enhancement
  ClickHouse/clickhouse-rs#398 · Filter by author alrevuelta opened on Mar 18, 2026
  1

• Support overriding buffer size(BUFFER_SIZE) in Insert

  enhancement
  ClickHouse/clickhouse-rs#389 · Filter by author hemantkrsh opened on Feb 23, 2026
  2

• Please consider jiff support instead of now deprecated chrono.

  enhancement
  ClickHouse/clickhouse-rs#383 · Filter by author keltia opened on Jan 30, 2026
  10

• Add Client::insert_formatted() taking a table name and a format

  Feature

  ClickHouse/clickhouse-rs#370 · Filter by author abonander opened on Dec 30, 2025

• Deprecate Query::fetch_bytes() in favor of Query::fetch_formatted()

  Feature

  ClickHouse/clickhouse-rs#369 · Filter by author abonander opened on Dec 29, 2025

• Parsing Decimal256

  ClickHouse/clickhouse-rs#363 · Filter by author tthebst opened on Dec 11, 2025
  3

• Support specifying independent names for the serialization and deserialization of a field

  enhancement
  ClickHouse/clickhouse-rs#360 · Filter by author destinyFvcker opened on Nov 28, 2025
  1