ClickHouse / ClickHouse/clickhouse-java
Unknown aggregate function: avgIf` occurs when querying via JDBC. (Trino and Dbeaver)
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Descripción
## Description
**Problem Analysis:**
**Core issue:** An error occurs when executing a query against the `default.nm_advert_stats_daily` table via the JDBC driver (DBeaver), whereas a direct query using the native ClickHouse client works correctly.
**Key points:**
1. **Error:** `Unknown aggregate function: avgIf` occurs when querying via JDBC.
2. **Direct query** in the ClickHouse console executes successfully.
3. **The table** uses aggregate functions in its columns:
- `position_avg_state AggregateFunction(avgIf, Float64, UInt8)`
- `position_quantiles_state AggregateFunction(quantilesTDigestIf(0.5, 0.9, 0.95), Float64, UInt8)`
**Software versions:**
- ClickHouse Server: 24.8.8
- JDBC Driver: Official ClickHouse driver (server version 21.3+)
**The Problem:** There is an incompatibility between the JDBC driver version and the ClickHouse server version. The driver does not recognize the syntax of the aggregate functions (`avgIf`) that are supported by the server.
**Solutions suggested by the participants:**
- Fix JDBC driver is up to date due to we can't use native client for Trino and Dbeaver
### Steps to reproduce
1.
2.
3.
### Error Log or Exception StackTrace
```
Trino try to select
select *
from table(ads_ch_ch.system.query(
query => 'select * from default.nm_advert_stats_daily limit 100'
)); -- this is native clickhouse execution
QL Error [65536]: Query failed (#20260407_141005_02502_hqy64): com.google.common.util.concurrent.UncheckedExecutionException: java.lang.IllegalArgumentException: Unknown aggregate function: avgIf
```
### Expected Behaviour
### Code Example
```java
```
### Configuration
#### Client Configuration
```java
```
#### Environment
* [ ] Cloud
* Client version:
* Language version:
* OS:
#### ClickHouse Server
* ClickHouse Server version:
* ClickHouse Server non-default settings, if any:
* `CREATE TABLE` statements for tables involved:
* Sample data for all these tables, use [clickhouse-obfuscator](https://github.com/ClickHouse/ClickHouse/blob/master/programs/obfuscator/Obfuscator.cpp#L42-L80) if necessary
Guía de contribución
Línea de trabajo
The report names the JDBC driver, DBeaver, Trino, and the default.nm_advert_stats_daily table, but no repository files or tests. Start by reproducing the Trino JDBC query and comparing it with the native ClickHouse query using the stated server and driver versions; done means the JDBC path handles the avgIf aggregate function without the reported error.
Escrito por el modelo de indexación a partir del texto del issue.
Evaluación
- Stack tecnológico
- java, sql
- Área
- api, database
- Tipo de issue
- Error
- Dificultad
- 4/5
- Tiempo estimado
- 3-5 días
- Estado de actividad
- Tranquilo
- Claridad
- Necesita aclaración
- Aptitud para principiantes
- 35/100