clickhouse-java
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ClickHouse
Java client and JDBC driver for ClickHouse
## Description There are some issues that should be addressed in `StatementImpl`: - add more test for uncovered methods - test `close()` in concurrent case and check all child resources...
### Use case Knowing the OS may be important for troubleshooting because OS defines architecture that affects binary data SerDe. Field we need: - OS Name (like Linux, Windows) -...
### Expected Behaviour The number of parameters parsed normally should be 1, while the number of parameters currently parsed is 0 This will cause *java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds...
## Description When retrieving a column, whose type is array, the inferred type is always `Object[]`; for example, it should be `Long[]` for `Array(Int64)`. ### Steps to reproduce See code...
## Description The API for query parameters with an `Instant` generates a query which can not be parsed by the server. ### Steps to reproduce See example below. ### Error...
## Description Root cause of the problem from: https://github.com/ClickHouse/clickhouse-java/issues/2333#issuecomment-2972784728 > I can understand the overflow issues with UInt64, but as it stands (in 0.8.6) all unsigned integer types are converted...
## Description It's not possible to insert into certain table names using prepared statements, unless the table names are quoted. Static statements don't require quoting. ### Steps to reproduce ```java...
## Description The issue was reproduced while executing the query in DBeaver with a read-only user. ### Error Log or Exception StackTrace ``` 2025-06-10 11:55:23.220 - SQL Error [22000]: Code:...
## Description Exception doesn't contain message from a server: `Code: 164. DB::Exception: (transport error: 500)` Log ``` 2025-06-10 19:16:01.278 - com.clickhouse.client.internal.apache.hc.client5.http.impl.classic.MainClientExec: ex-0000000007 connection can be kept alive for 10 SECONDS...
## Description `com.clickhouse.jdbc.internal.MetadataResultSet` was implemented to work only with metadata and has some limitation and inconsistencies. We need to fix it. Here are some examples: - `getObject("DATA_TYPE")` causes exception (see...