Hi,
Please find my answer inline for your query:
Ques: I know that API has function StorageService::AddOrUpdateKeys. But this function has argument objectId. Can i update some keys of object by querry?. UpdateDocumentByQuery will remove not updated fields.
Ans: As of now there is no such method where you can add or update some keys based on query. You can update the whole document by using any update method of Storage service.
Ques: I know than wi can add additional data when signup or auth user. Can i update additional user object?
Ans: Yes, you can update through addOrUpdateKeys method.
Let me know if you need any other help while using App42 SDK. I will be happy to help!!!
Regards,
Himanshu Sharma