betodealmeida commented on a change in pull request #16859:
URL: https://github.com/apache/superset/pull/16859#discussion_r717008867
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File path: superset/connectors/sqla/models.py
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@@ -1673,7 +1673,7 @@ def before_update(
if not DatasetDAO.validate_uniqueness(
target.database_id, target.schema, target.table_name
- ):
+ ) and hasattr(target, "columns"):
Review comment:
I think we need to understand the problem better.
Why is the backend checking for uniqueness when **updating columns** in a
dataset? If `database_id`, `schema` and `table_name` didn't change then we
should have exited in line 1672. Are any of those attributes changing when
overwriting a dataset from SQL Lab?
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