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---
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name: Bug report
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about: Wrong behavior (visible to users) in the official ClickHouse release.
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title: ''
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labels: 'potential bug'
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assignees: ''
---
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> You have to provide the following information whenever possible.
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**Describe what's wrong**
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> A clear and concise description of what works not as it is supposed to.
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> A link to reproducer in [https://fiddle.clickhouse.com/](https://fiddle.clickhouse.com/).
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**Does it reproduce on recent release?**
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[The list of releases ](https://github.com/ClickHouse/ClickHouse/blob/master/utils/list-versions/version_date.tsv )
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**Enable crash reporting**
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> If possible, change "enabled" to true in "send_crash_reports" section in `config.xml`:
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```
< send_crash_reports >
<!-- Changing <enabled> to true allows sending crash reports to -->
<!-- the ClickHouse core developers team via Sentry https://sentry.io -->
< enabled > false< / enabled >
```
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**How to reproduce**
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* Which ClickHouse server version to use
* Which interface to use, if matters
* Non-default settings, if any
* `CREATE TABLE` statements for all tables involved
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* Sample data for all these tables, use [clickhouse-obfuscator ](https://github.com/ClickHouse/ClickHouse/blob/master/programs/obfuscator/Obfuscator.cpp#L42-L80 ) if necessary
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* Queries to run that lead to unexpected result
**Expected behavior**
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> A clear and concise description of what you expected to happen.
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**Error message and/or stacktrace**
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> If applicable, add screenshots to help explain your problem.
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**Additional context**
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> Add any other context about the problem here.
