ClickHouse/.github/ISSUE_TEMPLATE/80_backward-compatibility.md

name	about	title	labels	assignees
Backward compatibility issue	Report the case when the behaviour of a new version can break existing use cases		backward compatibility

(you don't have to strictly follow this form)

Company or project name Put your company name or project description here

Describe the issue A clear and concise description of what works not as it is supposed to.

How to reproduce

• Which ClickHouse server versions are incompatible
• Which interface to use, if matters
• Non-default settings, if any
• CREATE TABLE statements for all tables involved
• Sample data for all these tables, use clickhouse-obfuscator if necessary
• Queries to run that lead to unexpected result

Error message and/or stacktrace If applicable, add screenshots to help explain your problem.

Additional context Add any other context about the problem here.