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Java client and JDBC driver for ClickHouse

Results 485 clickhouse-java issues
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DBeaver version 24.0.1 After updating Clickhouse-server to **24.3.1.2672**, we noticed that the connection time to clickhouse increased noticeably, it turned out that the problem was the default parameter “**externalDatabase**” in...

bug

## Summary Adding cloud tests coverage ## Checklist Delete items not relevant to your PR: - [ ] Unit and integration tests covering the common scenarios were added - [...

### Describe the bug Similar issue as https://github.com/ClickHouse/clickhouse-java/issues/1376 I am not able to read Protobuf messages back from the database, and I am not aware of any workaround. ### Expected...

bug

### Describe the bug When querying in binary formats, I'm unable to access underlying input stream because processor is null. As I understand it the connector doesn't support all data...

bug
module-http

### Describe the bug I have one cluster with 3 nodes. 1 shard, 3 copies. and one of the server failed to restart because of json support error. ### Error...

bug

## Summary Adds class to represent metrics of an operation. ## Checklist Delete items not relevant to your PR: - [x] Unit and integration tests covering the common scenarios were...

## Summary Test major data types and fix related bugs ## Checklist Delete items not relevant to your PR: - [x] Unit and integration tests covering the common scenarios were...

bug code : com.clickhouse.jdbc.internal.ClickHouseConnectionImpl#getTableColumns line 260 when I have a following table , this table contains a cloumn named '0' in this code, it will run the sql: this sql...

bug

When the executeBatch method is executed and the process throws an exception, the **InputBasedPreparedStatement.executeAny** method clears the content of the generated preparedStatement by invoking the **clearBatch()** method. This makes it...

bug
module-jdbc
usability
investigating

[ClickHouseHttpResponse](https://github.com/ClickHouse/clickhouse-java/blob/main/clickhouse-http-client/src/main/java/com/clickhouse/client/http/ClickHouseHttpResponse.java#L64) class contains the `queryId` field which is returned from HTTP response in the `X-ClickHouse-Query-Id` header. This field remains in the `ClickHouseHttpResponse` and it is not possible to retrieve it...

enhancement