ClickHouse/clickhouse-cs

Official .NET client for ClickHouse DB

Stars: 94
Forks: 22
Open beginner issues: 0
Indexed issues: 24
Avg merge: 11h 26m
Merged PRs (30d): 22

Dominant language: C#
License: MIT
Last GitHub push: Sep 8, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Open All

24 open issues indexed

Update external dependencies Open

ClickHouse/clickhouse-cs#12 · 2 comments · 2 reactions · 1 assignee · Indexed Sep 15, 2026
External Data Open

ClickHouse/clickhouse-cs#67 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Expose HTTP response message (or response metadata) for ClickHouseRawResult Open

enhancement

ClickHouse/clickhouse-cs#198 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Use per-TFM package versions instead of pinning to latest net10 version Open

ClickHouse/clickhouse-cs#313 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
EncloseColumnName / QuoteSingle / QuoteDouble skip escaping when input starts and ends with the quote char Open

ClickHouse/clickhouse-cs#316 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
The Dilemma of Using InsertBinaryAsync Open

ClickHouse/clickhouse-cs#328 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ExecuteNonQueryAsync silently treats HTTP 200 with mid-stream exception as success Open

ClickHouse/clickhouse-cs#333 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Query parameters sent in URI by default cause HTTP 414 with large IN-lists / vector embeddings Open

ClickHouse/clickhouse-cs#334 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Unable to rotate password without overriding internal HTTP infrastructure Open

ClickHouse/clickhouse-cs#395 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Decimal values written to a Dynamic column are silently truncated to scale 9 Open

ClickHouse/clickhouse-cs#466 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ExecuteRawResultAsync / ClickHouseRawResult does not detect in-band mid-stream server exceptions Open

ClickHouse/clickhouse-cs#475 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ReadStringsAsByteArrays breaks GetSchema("Columns") and GetString() Open

ClickHouse/clickhouse-cs#486 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reading SimpleAggregateFunction inside a Dynamic column throws NotImplementedException Open

ClickHouse/clickhouse-cs#505 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
GetDateTimeOffset returns the wrong instant for DST-ambiguous timestamps: it coerces from a wall-clock DateTime instead of reading the stored instant Open

bug triage:bugfix

ClickHouse/clickhouse-cs#515 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
GetDateTimeOffset() and GetSchemaTable() ignore LowCardinality/SimpleAggregateFunction wrappers: GetEffectiveClickHouseType only unwraps Nullable Open

bug

ClickHouse/clickhouse-cs#518 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ClickHouseCommand: CommandBehavior matched by equality, so SchemaOnly/SingleRow combined with any other flag applies no row limit Open

bug

ClickHouse/clickhouse-cs#520 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
CustomHeaders: any HTTP content header throws InvalidOperationException ("Misused header name") instead of being applied or ignored Open

bug

ClickHouse/clickhouse-cs#528 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
JSON: reading a Dynamic/Variant-hinted path that holds an array throws InvalidOperationException; string values under a Dynamic hint are base64 under ReadStringsAsByteArrays Open

bug

ClickHouse/clickhouse-cs#530 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Types: named Tuple/Map element of type JSON is unreadable — "Unknown type: x JSON" Open

bug

ClickHouse/clickhouse-cs#543 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Types: Object('json') column is parsed as SimpleAggregateFunction, so GetSchema("Columns") reports "SimpleAggregateFunction(, Json)" Open

bug

ClickHouse/clickhouse-cs#545 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ClickHouseRawResult.ReadAsStringAsync (and friends) should support cancellation Open

enhancement

ClickHouse/clickhouse-cs#546 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ClickHouseDataReader silently returns zero rows when every column is zero-width (Tuple()) Open

bug

ClickHouse/clickhouse-cs#570 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
InsertBinaryAsync / InsertRawStreamAsync concatenate the raw table name into SQL — names needing backquotes cannot be used Open

ClickHouse/clickhouse-cs#602 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Binary write: Date/Date32/DateTime/DateTime64 reject string values with a bare NotSupportedException, unlike every other scalar type Open

ClickHouse/clickhouse-cs#614 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

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