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document how to activate a new version of postgres-singer-io tap schema - key_properties change detected #223
Description
After updating a singer.io target-postgres tap to use a new key, I see the following error:
target_postgres.exceptions.PostgresError: ('Exception writing records', PostgresError("`key_properties` change detected. Existing values are: ['uri']. Streamed values are: ['id']"))
[2022-10-20, 19:22:01 UTC] {{taskinstance.py:1902}} ERROR - Task failed with exception
the target table comment is configured like this....
comment on table redacted.redacted is '{"path": ["redacted"], "version": 1, "schema_version": 3, "key_properties": ["uri"] ....
it used to have "key_properties": ["id"].
This functionality is listed as a feature, but there is no documentation on how to use it.
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