ClickHouse/clickhouse-java

#2516

· alekkol opened

on Jul 31, 2025

[jdbc-v2] review default value for wait_end_of_query

jdbc-v2

#2830

· chernser opened

on Apr 16, 2026

[jdbc-v2, client-v2] MAX_NUM_OF_CONNECTIONS doesn't limit connection.

#2379

· chernser opened

on May 21, 2025

ClickHouseDefaultSslContextProvider expect an invalid PKCS8-encoded PEM file

#1589

· ekpdt opened

on Apr 4, 2024

PreparedStatement.setQueryTimeout() not honored in ClickHouse JDBC driver (version 0.9.1-all)

bug

investigating

jdbc-v2

#2637

· atish11pune opened

on Nov 3, 2025

[jdbc-v2] `DataLakeCatalog` is not present in `getSchemas()` result or avoid using `system.*` where possible.

area:jdbc-metadata

bug

jdbc-v2

#2907

· chernser opened

on Jul 2, 2026

[client-v2] Insert/timeout settings

area:general

client-api-v2

jdbc-v2

#2826

· chernser opened

on Apr 15, 2026

Document usage of JSONEachrow reader

area:docs

client-api-v2

Task

#2890

· chernser opened

on Jun 24, 2026

[jdbc-v2,client-v2] Configuration in migration guide should be clear

#2892

· chernser opened

on Jun 24, 2026

[client-v2,jdbc-v2] Reading Array(Nullable(String)) with BinaryString enabled

area:data-type

client-api-v2

jdbc-v2

#2953

· chernser opened

on Jul 22, 2026

Add missing `Hash` output format to `ClickHouseFormat` enum (JDBC/DataGrip throws "No enum constant ... Hash")

bug

client-api-v2

jdbc-v2

#2957

· allegrinisante opened

on Jul 24, 2026

[client-v2] Expose supported configuration options via a public API

area:general

client-api-v2

enhancement

#3059

· Marais opened

on Aug 17, 2026

[client-v2, jdbc-v2] Make execution TIMEOUT error optionally retriable

area:general

client-api-v2

jdbc-v2

#3072

· chernser opened

on Aug 24, 2026

[client-v2] getTableSchema and insert concatenate the raw table name into SQL — names needing backquotes cannot be used

#3089

· Marais opened

on Aug 31, 2026

[client-v2, jdbc-v2] Add MultiPoint type support

area:data-type

enhancement

#3048

· benedictpmateo opened

on Aug 12, 2026

[client-v2, jdbc-v2] SQLUtils.enquoteLiteral / enquoteIdentifier do not escape backslashes, corrupting or breaking SQL

#3063

· claude opened

on Aug 18, 2026

[client-v2, jdbc-v2] A caller-supplied FORMAT clause is silently ignored on ClickHouse 26.8+ (X-ClickHouse-Format wins)

#3070

· polyglotAI-bot opened

on Aug 20, 2026

jdbc-v2: an INSERT VALUES list holding a literal is routed to the beta RowBinary writer, which silently shifts the bound values

#3083

· polyglotAI-bot opened

on Aug 26, 2026

client-v2: geo columns (Point/Ring/Polygon/...) are misread in the Native format

area:data-type

bug

client-api-v2

#3088

· polyglotAI-bot opened

on Aug 31, 2026

JDBC Driver: PreparedStatement counts ? placeholders inside SQL comments (regression since 0.1.36)

#2835

· enaviduka-bit opened

on Apr 21, 2026

`socket_keepalive` doesn't work with shaded clickhouse-jdbc

bug

#3092

· ostinru opened

on Sep 1, 2026

[client-v2] ClickHouseColumn mis-parses a Tuple whose JSON element is not last: later elements are swallowed as JSON parameters

area:data-type

bug

#3098

· Marais opened

on Sep 3, 2026

[client-v2, jdbc-v2] Client should detect server compression and use proper decompression algorithm

#3120

· chernser opened

on Sep 10, 2026

jdbc-v2: JavaCC grammar has no RECURSIVE token, so every recursive CTE logs a parse-failure WARN

area:sql-parser

jdbc-v2

#3122

· hrkim2 opened

on Sep 11, 2026

[client-v2] NativeFormatReader fails for non-null values of Nullable(String)

bug

#3137

· donats11 opened

on Sep 17, 2026

Navigation Menu

0.11.0

Major performance regression in client-v2

[jdbc-v2] review default value for wait_end_of_query

[jdbc-v2, client-v2] MAX_NUM_OF_CONNECTIONS doesn't limit connection.

ClickHouseDefaultSslContextProvider expect an invalid PKCS8-encoded PEM file

PreparedStatement.setQueryTimeout() not honored in ClickHouse JDBC driver (version 0.9.1-all)

[jdbc-v2] `DataLakeCatalog` is not present in `getSchemas()` result or avoid using `system.*` where possible.

[client-v2] Insert/timeout settings

Document usage of JSONEachrow reader

[jdbc-v2,client-v2] Configuration in migration guide should be clear

[client-v2,jdbc-v2] Reading Array(Nullable(String)) with BinaryString enabled

Add missing `Hash` output format to `ClickHouseFormat` enum (JDBC/DataGrip throws "No enum constant ... Hash")

[client-v2] Expose supported configuration options via a public API

[client-v2, jdbc-v2] Make execution TIMEOUT error optionally retriable

[client-v2] getTableSchema and insert concatenate the raw table name into SQL — names needing backquotes cannot be used

[client-v2, jdbc-v2] Add MultiPoint type support

[client-v2, jdbc-v2] SQLUtils.enquoteLiteral / enquoteIdentifier do not escape backslashes, corrupting or breaking SQL

[client-v2, jdbc-v2] A caller-supplied FORMAT clause is silently ignored on ClickHouse 26.8+ (X-ClickHouse-Format wins)

jdbc-v2: an INSERT VALUES list holding a literal is routed to the beta RowBinary writer, which silently shifts the bound values

client-v2: geo columns (Point/Ring/Polygon/...) are misread in the Native format

JDBC Driver: PreparedStatement counts ? placeholders inside SQL comments (regression since 0.1.36)

`socket_keepalive` doesn't work with shaded clickhouse-jdbc

[client-v2] ClickHouseColumn mis-parses a Tuple whose JSON element is not last: later elements are swallowed as JSON parameters

[client-v2, jdbc-v2] Client should detect server compression and use proper decompression algorithm

jdbc-v2: JavaCC grammar has no RECURSIVE token, so every recursive CTE logs a parse-failure WARN

[client-v2] NativeFormatReader fails for non-null values of Nullable(String)

List view