Issues

• ClickHouseCommand: await command.ExecuteReaderAsync() is typed DbDataReader, so the documented TryGetEnumOrdinal example does not compile

  bugdocumentation
  ClickHouse/clickhouse-cs#690 · Filter by author polyglotAI-bot opened on Oct 15, 2026

• ClickHouseDataSource: DisposeAsync() (and await using) does not dispose the owned ClickHouseClient/HttpClient

  bug
  ClickHouse/clickhouse-cs#689 · Filter by author polyglotAI-bot opened on Oct 15, 2026

• ClickHouseDataSource: await dataSource.OpenConnectionAsync() returns DbConnection, so the documented ADO.NET examples do not compile

  bugdocumentation
  ClickHouse/clickhouse-cs#686 · Filter by author polyglotAI-bot opened on Oct 15, 2026
  1

• OpenTelemetry: db.name span tag reports the configured database, not the database the query runs in

  bug
  ClickHouse/clickhouse-cs#685 · Filter by author polyglotAI-bot opened on Oct 15, 2026
  

• ClickHouseConnection.PostStreamAsync and ClickHouseBulkCopy ignore ChangeDatabase

  bug
  ClickHouse/clickhouse-cs#683 · Filter by author polyglotAI-bot opened on Oct 14, 2026
  

• ClickHouseConnection.CustomSettings writes change the shared client and the caller's settings object

  bug
  ClickHouse/clickhouse-cs#682 · Filter by author alex-clickhouse opened on Oct 14, 2026
  1

• Every query fails with Code 164 (READONLY) for a readonly = 1 user: the driver always sends enable_http_compression and input_format_binary_read_json_as_string as settings

  ClickHouse/clickhouse-cs#659 · Filter by author claude opened on Oct 7, 2026
  1

• HTTP: support typed Tuple/ValueTuple reads in GetFieldValue<T>, including tuples of more than 7 elements

  enhancement
  ClickHouse/clickhouse-cs#656 · Filter by author retvain opened on Oct 4, 2026

• TCP Dynamic: insert of an object[], nullable-element or System.Tuple composite fails with InvalidCastException instead of NotSupportedException

  bug
  ClickHouse/clickhouse-cs#652 · Filter by author polyglotAI-bot opened on Oct 1, 2026

• Dynamic: a collection that contains itself crashes the process with a stack overflow

  bug
  ClickHouse/clickhouse-cs#651 · Filter by author polyglotAI-bot opened on Oct 1, 2026

• ClickHouseDecimal: Floor() rounds negative non-integers toward zero (-1.5 → -1, server floor gives -2)

  bug
  ClickHouse/clickhouse-cs#645 · Filter by author polyglotAI-bot opened on Oct 1, 2026
  

• ClickHouseDecimal: GetHashCode depends on Scale, but Equals ignores Scale

  bug
  ClickHouse/clickhouse-cs#639 · Filter by author polyglotAI-bot opened on Oct 1, 2026

• Query parameters: ClickHouseDecimal values are inferred as Decimal128(9), so scale > 9 is silently truncated

  bug
  ClickHouse/clickhouse-cs#637 · Filter by author polyglotAI-bot opened on Oct 1, 2026
  

• Dynamic: preserve decimal collection precision during binary inserts

  bug
  ClickHouse/clickhouse-cs#636 · Filter by author alex-clickhouse opened on Oct 1, 2026
  

• JSON: a typed path wrapped in SimpleAggregateFunction is never unwrapped — composite values throw "The element cannot be an object or array", Array(UInt8) reads as base64

  bug
  ClickHouse/clickhouse-cs#627 · Filter by author polyglotAI-bot opened on Sep 25, 2026

• JSON: a path holding a Tuple (heterogeneous JSON array) throws "The element cannot be an object or array"; Dynamic(max_types=N) is an unknown type

  ClickHouse/clickhouse-cs#626 · Filter by author claude opened on Sep 25, 2026

• InsertBinaryAsync attaches the caller's InsertOptions.QueryId to the internal schema-probe SELECT instead of the INSERT

  ClickHouse/clickhouse-cs#624 · Filter by author claude opened on Sep 24, 2026

• Binary write: Date/Date32/DateTime/DateTime64 reject string values with a bare NotSupportedException, unlike every other scalar type

  ClickHouse/clickhouse-cs#614 · Filter by author claude opened on Sep 14, 2026

• InsertBinaryAsync / InsertRawStreamAsync concatenate the raw table name into SQL — names needing backquotes cannot be used

  ClickHouse/clickhouse-cs#602 · Filter by author claude opened on Aug 31, 2026

• ClickHouseRawResult.ReadAsStringAsync (and friends) should support cancellation

  enhancement
  ClickHouse/clickhouse-cs#546 · Filter by author otto-gebb opened on Aug 13, 2026

• Types: Object('json') column is parsed as SimpleAggregateFunction, so GetSchema("Columns") reports "SimpleAggregateFunction(, Json)"

  bug
  ClickHouse/clickhouse-cs#545 · Filter by author polyglotAI-bot opened on Aug 12, 2026

• JSON: reading a Dynamic/Variant-hinted path that holds an array throws InvalidOperationException; string values under a Dynamic hint are base64 under ReadStringsAsByteArrays

  bug
  ClickHouse/clickhouse-cs#530 · Filter by author polyglotAI-bot opened on Aug 6, 2026

• CustomHeaders: any HTTP content header throws InvalidOperationException ("Misused header name") instead of being applied or ignored

  bug
  ClickHouse/clickhouse-cs#528 · Filter by author polyglotAI-bot opened on Aug 6, 2026

• ClickHouseCommand: CommandBehavior matched by equality, so SchemaOnly/SingleRow combined with any other flag applies no row limit

  bug
  ClickHouse/clickhouse-cs#520 · Filter by author polyglotAI-bot opened on Aug 5, 2026
  

• GetDateTimeOffset() and GetSchemaTable() ignore LowCardinality/SimpleAggregateFunction wrappers: GetEffectiveClickHouseType only unwraps Nullable

  bug
  ClickHouse/clickhouse-cs#518 · Filter by author polyglotAI-bot opened on Aug 4, 2026