The instance of entity type 'AnswerSheet' cannot be tracked because another instance with the same key value for {'SheetId'} is already being tracked. When attaching existing entities, ensure that only one entity instance with a given key value is attached. Consider using 'DbContextOptionsBuilder.EnableSensitiveDataLogging' to see the conflicting key values.

[qiqistart]

halo ,author ，Update Data report an error:The instance of entity type 'AnswerSheet' cannot be tracked because another instance with the same key value for {'SheetId'} is already being tracked. When attaching existing entities, ensure that only one entity instance with a given key value is attached. Consider using 'DbContextOptionsBuilder.EnableSensitiveDataLogging' to see the conflicting key values.

[denis-ivanov]

Please, try a new version EntityFrameworkCore.ClickHouse/0.0.12 and if it's still reproducible provide a minimum working example.

[denis-ivanov]

Provide full example and open a new issue.