Issues

• 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: division throws "Scale cannot be <0" when the quotient has more than 50 integer digits

  bug
  ClickHouse/clickhouse-cs#650 · Filter by author polyglotAI-bot opened on Oct 1, 2026

• ClickHouseDecimal: Convert.ToInt32 keeps only 16 bits (wrong Int32 inserts), and Convert.ChangeType to an unsupported type overflows the stack

  bug
  ClickHouse/clickhouse-cs#646 · 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

• Dynamic: writing a plain System.Object value recurses forever and crashes the process with a stack overflow

  bug
  ClickHouse/clickhouse-cs#644 · Filter by author polyglotAI-bot opened on Oct 1, 2026
  

• ClickHouseDecimal: NumberOfDigits is one too low at powers of ten, so Truncate() and Convert.ChangeType(..., typeof(BigInteger)) return wrong values

  bug
  ClickHouse/clickhouse-cs#642 · Filter by author polyglotAI-bot opened on Oct 1, 2026
  1

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

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

• docs: http.mdx says writing Dynamic throws NotImplementedException, but binary inserts into Dynamic work

  bugdocumentation
  ClickHouse/clickhouse-cs#638 · 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

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

  bug
  ClickHouse/clickhouse-cs#570 · Filter by author polyglotAI-bot opened on Aug 18, 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

• Types: named Tuple/Map element of type JSON is unreadable — "Unknown type: x JSON"

  bug
  ClickHouse/clickhouse-cs#543 · 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

• GetDateTimeOffset returns the wrong instant for DST-ambiguous timestamps: it coerces from a wall-clock DateTime instead of reading the stored instant

  bugtriage:bugfix
  ClickHouse/clickhouse-cs#515 · Filter by author alex-clickhouse opened on Aug 4, 2026